BEN
BOTANICAL ELECTRONIC NEWS
ISSN 1188-603X

No. 400 October 8, 2008 aceska@telus.net Victoria, B.C.
Dr. A. Ceska, P.O.Box 8546, Victoria, B.C. Canada V8W 3S2

LESLIE ABRAM VIERECK (1930-2008)

From: Fairbanks remembers Les Viereck by Chris Freiberg, published in News-Miner Sunday, September 7, 2008 and other sources

To most Alaskans, Les Viereck is known for being one of the first climbers of Mt. McKinley and a vocal critic of a '60s plan to use nuclear warheads to excavate a harbour on the North Slope.

But to the hundreds of people who gathered on September 6, 2008 afternoon at Georgeson Botanical Garden to remember him, Viereck was known simply as a good friend and a loving husband and father.

"He was kind of like the Ent from 'Lord of The Rings,'" said Viereck's daughter, Sharon, referring to the humanoid trees from the famous novels and films. "He was never hasty, very cautious. That's sort of how my father went through life."

Leslie Abram Viereck passed away at his home in Fairbanks on August 31, 2008, after struggling with numerous health issues for the last months.

Les was born Feb. 20, 1930, in South Dartmouth, Mass. He grew up in a small Atlantic fishing town but was drawn to Alaska during his Dartmouth College years when he and two friends drove a Model A Ford up the Alaska Highway.

Though Viereck loved living in Alaska, it was far from his birthplace of Massachusetts. He was drawn to the then-territory while attending Dartmouth College, eventually driving a Model A Ford up the Alaska Highway to settle here.

He served in the Army at Fort Richardson in the '50s, but longtime friend Dave Klein said Viereck wasn't always crazy about being in the military.

"I remember discussing it with Les, and we both considered going to Canada, which was not as popular back then," Klein said. "But he concluded that he had a lot to stay in Alaska for and we'd tough it out."

It was while in the Army that Viereck and three other men climbed Mount McKinley. At the time, fewer than 10 parties had climbed North America's tallest peak.

Viereck had asked for only a month of leave from the Army before making the ascent, but it took the group just that long to make it to the summit.

"The sergeant was really angry and wanted to place us on AWOL (=Absent Without Official Leave)," said George Argus, who accompanied Viereck on the climb. "But the base commander realized that if someone's feats are written up in Life magazine, you probably don't want to put them on AWOL."

In 1959, after his Army service, Viereck took a research and teaching job at the University of Alaska Fairbanks. One of his first projects was to study the environmental impact of Project Chariot, a U.S. Atomic Energy Commission proposal to detonate a series of nuclear bombs on the shore of Cape Thompson on the North Slope, blasting a harbor from the tundra to promote the peaceful uses of nuclear power.

Edward Teller, the physicist who was the inspiration for Dr. Strangelove, traveled Alaska to promote the positive economic impact the harbor could have on the state, but Viereck and two other scientists publicized the likely disastrous environmental effects of the plan.

The project did not go forward, but Viereck and two other scientists at the university lost their jobs as a result of their criticism.

In 1963, Les took a job with the U.S. Forest Service at the Institute of Northern Forestry. During his tenure with the Forest Service, he wrote a definitive book on trees and shrubs of Alaska. This book was recently republished by the University of Alaska Press.

A COMPILATION OF ADDITIONS TO THE FLORA OF THE CONTINENTAL PORTIONS OF NORTHWEST TERRITORIES AND NUNAVUT - NO. 2

From: P.M. Catling(1), G. Mitrow(1) and B.A. Bennett(2), (1)Biodiversity, National Program on Environmental Health, Agriculture and Agri-Food Canada, Wm. Saunders Bldg., Central Experimental Farm, Ottawa, Ontario, Canada K1A 0C6 Email: [catlingp@agr.gc.ca] & (2)Yukon Department of Environment, Wildlife Viewing Program V5A, Box 2703, Whitehorse, Yukon, Canada Y1A 2C6 Email: [Bruce.Bennett@gov.yk.ca]

Introduction

Continuing work on the flora of continental Northwest Territories and Nunavut requires another update to the classic regional Flora produced by Porsild and Cody (1980) to supplement the first compilation of additions (Catling et al. 2005). Since that compilation several additions have been published and volumes 5, 19, 21 and 24 of the Flora of North America have appeared. The maps and in these volumes have been checked for additions to Porsild and Cody's (1980) text.

Although not included in this compilation, botanical research in continental NT continued in 2006 with a botanical survey of roadsides (Oldham 2007.) and in 2007 with collections in the region of Norman Wells (Mackenzie and Richardson Mountains) and Enterprise (Catling in prep.) and in 2008 with collections from the north shore of Great Slave Lake (Catling in prep.).

The sequence of the additions is alphabetical under the sequence of families in Porsild & Cody (1980). A list of recent reports requiring confirmation is included. In the notes section, the species are in alphabetical order. The common names for additions in the list are taken primarily from Kartesz and Meacham (1999). In some cases a widely used common name is not available. Including the 57 additions compiled here and the 94 from the previous compilation (Catling et al. 2005), the flora of Northwest Territories includes approximately 1254 species.

Additions to Northwest Territories (NT) and Nunavut (NU)

SPARGANIACEAE

  • Sparganium fluctuans (Morong) B.L. Robins., FLOATING BURR-REED. This species was reported for NT by Kartesz and Meacham (1999) on the basis of a personal communication from W.J. Cody indicating a voucher specimen at DAO. The voucher specimen (Baker Creek at Giant Mine, Yellowknife, 62° 27' N, -114° 22' W, 15 Aug. 1949, W.J. Cody 3490 and J.B. McCanse, DAO 171531) was revised to S. fluctuans by V. Harms in 1996 and has the distinctively branched inflorescence but is immature. Since the identification appears to be correct it is accepted in the flora.

    POTAMOGETONACEAE

  • Potamogeton robbinsii Oakes, FERN PONDWEED. This species was reported for NT by Porsild and Cody (1980) from a collection made on the Thelon River, now the boundary of NT and NU. The following specimen is the first confirmed from west of the new boundary of the NT: Parson Lake district, N of Inuvik, two stems collected floating along lake shore, 68.99733, 133.57169, G.C.D. Griffiths & L. Hamilton, GR14, 30 July, 2006 (B.A. Bennett Herbarium)

    POACEAE

  • Deschampsia sukatschewii (Popl.) Roschev. Previously included in D. cespitosa. It is widespread in NT (Barkworth 2007c).
  • Elymus glaucus Buckley, COMMON WESTERN WILD RYE. Shown at the approximate location of Fort Good Hope by Barkworth et al. (2007a,b).
  • Elymus lanceolatus (Scrib. and G.J. Sm.) Gould (including E. calderi), STREAMSIDE WILD RYE. Shown at the approximate location of Tuktoyaktuk by Barkworth et al. (2007a,b).
  • Festuca auriculata Drobow, LOBE FESCUE. Shown from the approximate location of Aklavik by Darbyshire and Pavlick (2007) and also in Barkworth et al. (2007b). The specimen used for the illustration in the Flora of North America series was collected by W.J. Cody 12888 and S. Johansson, 17 July 1963, at Canoe Lake on the east slope of the Richardson Mountains 25 miles west of Aklavik (DAO).
  • Festuca lenensis Drowbow, TUNDRA FESCUE. Should be added, see under F. ovina in "Notes" below. In the DAO collection there are numerous specimens from the region of Aklavik.
  • Festuca viviparoidea Krajina ex Pavlick subsp. viviparoidea, VIVIPAROUS FESCUE. Shown by Darbyshire and Pavlick (2007) from the approximate location Fort Good Hope and listed for NT by Aiken et al. (1996).
  • Hesperostipa comata (Trin. & Rupr.) Barkworth, NEEDLE-AND-THREAD. Shown at the approximate location of Fort Smith by Barkworth (2007b).
  • Panicum capillare L. var. occidentale Rydberg, COMMON PANIC GRASS. See Catling (2005a).
  • Piptatherum canadense (Poir.) Dorn, CANADIAN MOUNTAIN RICE GRASS. Shown for the approximate location of Fort Smith by Barkworth (2007b).
  • Poa interior Rydberg, INTERIOR BLUE GRASS. Shown for the Mackenzie Mountains by Soreng 2006. Porsild and Cody (1980) treated this taxon as a synonym of the widespread P. glauca M. Vahl. It was reported for NT by Scoggan (1978) as P. nemoralis L. var. interior (Rydb.) Butters & Abbe.
  • Puccinellia nutkaensis (J. Presl) Fernald and Weath., ALASKA ALKALI GRASS. Mapped in the Mackenzie Delta region by Davis and Consaul (2006) and shown for this region in Barkworth et al. (2007b).

    CYPERACEAE

  • Carex stylosa C.A. Mey., LONG-STYLE SEDGE. This species was mapped by Hultén (1968, p. 258) for the Mackenzie Mountains in NT south of Norman Wells. Although not included in Porsild and Cody (1980), there seems to be no particular reason to reject the report.
  • Eleocharis erythropoda Steudel, BALD SPIKE-RUSH. See Catling (2005a).
  • Schoenoplectus pungens (Vahl) Palla (Scirpus americanus auct. non Persoon), COMMON THREE-SQUARE BULRUSH. See Catling (2005a). The specimens collected would be referable to var. longispicatus on the basis of reddish-brown spikelets and some trigonous achenes but we follow the most recent treatment in not recognizing varieties.

    POLYGONACEAE

  • Polygonum fowleri B.B. Robertson subsp. fowleri, FOWLER'S KNOTWEED. Shown for NT and NU by Costea et al. 2005. This taxon was originally reported by Cody et al. (2003) although they did not report the subspecies.
  • Polygonum fowleri B.B. Robertson subsp. hudsonianum (S.J. Wolf and McNeill) Costea and Tardif, FOWLER'S KNOTWEED. Shown for NT and NU by Costea et al. (2005). This taxon was originally reported by Cody et al. (2003) as P. hudsonianum (Wolf & McNeill) Hinds.
  • Polygonum ramosissimum Michx. subsp. ramosissimum, YELLOW-FLOWER KNOTWEED. Shown for NT by Costea et al. 2005. This was originally reported by Cody et al. (2003), but without indicating a variety.

    CHENOPODIACEAE

  • Chenopodium leptophyllum (Moquin-Tandon) Nutt. ex S. Wats., NARROW-LEAF GOOSEFOOT. See Catling (2005).

    CARYOPHYLLACEAE

  • Arenaria longipedunculata Hult., LONGSTEM SANDWORT. Shown for NT by Hartman et al. (2005). Included by Porsild and Cody (1980) in A. humifusa but now recognized as a distinct species. More study of this group is required. Arenaria humifusa appears to occur primarily east of the Mackenzie River and A. longipedunculata to the west.
  • Cerastium alpinum L. subsp. lanatum (Lamark) Cesati, ALPINE MOUSE-EAR CHICKWEED. Shown for NT by Morton (2005b). It was previously mapped for NU by Hultén (1956, p. 429).
  • Minuartia elegans (Cham. and Schlect.) Schischkin in V.L. Komarov et al., ELEGANT STITCHWORT. Shown for NT Rabeler et al. (2005). Included by Porsild and Cody (1980) in Minuartia rossii (R. Br.) House.
  • Sagina procumbens L., MATTED PEARLWORT. Shown for NT by Crow (2005). There are two specimens at DAO: weed in front of tourist information centre in Yellowknife, 19 July 1994, M. Hils, J.W. Thieret. Garden in front of Northern Frontier Visitor Centre, Yellowknife, 62.45 N, 114.35 W, 1 Aug. 1997, V. Johnston 218,
  • Silene cserei Baumg., BALKAN CATCHFLY. See Catling (2005a).
  • Stellaria borealis Bigelow subsp. borealis, BOREAL STARWORT. Shown for NT and NU by Morton (2005c). Included by Porsild and Cody (1980) in S. calycantha (Ledeb.) Bongard.

    NYMPHAEACEAE

  • Nymphaea tetragonal Georgi, PYGMY WATER-LILY. Recently separated from N. leibergii (N. tetragona ssp. leibergii) which also occurs in NT. Nymphaea tetragonal is currently known from several collections in NT (Catling 2005b). RANUNCULACEAE
  • Actaea rubra (Ait.) Willd. f. neglecta (Gillman) Robins., RED BANEBERRY (WHITE-FRUITED FORM). See Catling (2005a) but it was actually first reported by Cody (1961) although not mentioned in Porsild & Cody (1980).

    MALVACEAE

  • Malva neglecta Wallr., DWARF MALLOW. See Catling (2005a).

    BRASSICACEAE

  • Arabis glabra (L.) Bernh., TOWER-MUSTARD. This species is mapped on the southern border of NT by Hultén and Fries (1986), and is also reported from NT by Scoggan (1978). Although Kartesz and Meacham (1999) refer to a voucher at DAO, the folder is empty. Assuming that the specimen is misplaced, it is accepted.

    SAXIFRAGACEAE

  • Boykinia richardsonii (Hook.) Rothrock, RICHARDSON'S BROOKFOAM. This species was included by Porsild and Cody (1980) because they thought that it would likely occur in the mountains west of the Mackenzie Delta. The type from which the species was described by Hooker (1833-1840) included two collections; one apparently from Dr. John Richardson in 1826 (Franklin 1828) collected during his voyage between the Mackenzie and Coppermine Rivers. Since Richardson's voyage was entirely within the present day NT it is suspected that Boykinia occurred there though it is presently outside of its known range in northern Yukon and Alaska.
  • Chrysosplenium iowense Rydb., IOWA GOLDEN-SAXIFRAGE. This species was reported for NT by Kartesz and Meacham (1999) on the basis of the report in Packer (1983). Although we have not seen a specimen it occurs near to the boundary of NT in northern Alberta and seems likely so the report is accepted.
  • Mitella pentandra Hook., FIVE-STAMEN BISHOP'S-CAP. This species was reported for NT by Kartesz and Meacham (1999) on the basis of the report by Cronquist et al. (1997). We were unaware of a specimen but it was recently collected near the Yukon border (lush, moist alpine meadow at base of slope, facing SE, Howard's Pass, 62.44786 °N, -129.20757 °W, 11 July 2007, R. Rosie 07-HP-015 (DAO 831959).
  • Saxifraga hyperborea R. Br., PYGMY SAXIFRAGE. This species is mapped for NU from south of Kugluktuk (previously Coppermine) by Hultén and Fries (1986). Although we have not seen a specimen, there seems no reason to doubt the record based on its overall distribution and it is apparently the only member of the Saxifraga rivularis complex found in continental Northwest Territories (Jřrgensen et al. 2006). Collections treated as S. rivularis from western NT are now treated as S. hyperborea.

    ROSACEAE

  • Potentilla villosula Jurtz, There are 3 specimens at DAO so identified by J. Soják in 1987 (Yohin Ridge, 61° 12' N, -123° 51', Nahanni National Park, 14 July 1975, S.S. Talbot T50=23-13, DAO 160925; Keele River, Mother-in-law Lake, 64 ° 13' N, -127. ° 32' W, 27 June 1971, W.J. Cody 19222 and G.W. Scotter, DAO 610894; Mackenzie Mountains, O'Grady Lake, 63° 00' N, -129° 02' W, 23 July 1967, W.J. Cody 16413, DAO 182769). These specimens key to P. villosula using Elven & Murray (2008).

    BALSAMINACEAE

  • Impatiens noli-tangere L., WESTERN TOUCH-ME-NOT. This species was not included in Porsild and Cody (1980) although it was mapped for Fort Smith and Great Bear Lake by Hultén and Fries (1986).

    SCROPHULARIACEAE

  • Chaenorhinum minus (L.) Lange, DWARF SNAP-DRAGON. See Catling (2005a).

    RUBIACEAE

  • Galium aparine L., CLEAVERS. See Catling (2005a).

    ASTERACEAE

  • Achillea millefolium L. f. rosea Rand. & Redf., YARROW (ROSE FORM). See Catling (2005a).
  • Achillea ptarmica L., PEARL YARROW. See Catling (2005a)
  • Ambrosia artemisiifolia L., ANNUAL RAGWEED. Reported by Strother (2006) but originally reported by Scoggan (1979) from Fort Smith.
  • Artemisia dracunculus L., DRAGON WORMWOOD. See Catling (2005a). This species was listed as "to be expected" in Porsild & Cody (1980).
  • Helianthus annuus L., COMMON SUNFLOWER. Mapped for NT by Schilling (2006) but originally reported from NT by Scoggan (1979) from near Fort Simpson.
  • Sonchus oleraceus L., COMMON SOW-THISTLE. Shown for NT by Hyatt (2006) and there is a specimen in DAO: Fort Simpson, 11 Aug. 1955, W.J. Cody 9336 and J. M. Matte.
  • Symphyotrichum lanceolatum (Willd.) G.L. Nesom subsp. hesperium (Gray) Nesom var. hesperium (A. Gray) Semple & Chmielewski, WESTERN WILLOW ASTER. See Catling (2005a) but first reported by Thieret (1963) from Alexandra Falls.

    REPORTS REQUIRING CONFIRMATION

    There are no justifying specimens of the following in the DAO collection, and we regard them as requiring confirmation.

    POACEAE

  • Agrostis clavata Trin., CLAVATE BENT. Mapped for the region of Fort Simpson by Harvey (2007), but not by Harvey in Barkworth et al. (2007b).

    POLYGONACEAE

  • Polygonum aviculare L. subsp. buxiforme (Small) Costea and Tardif, AMERICAN KNOTWEED. Shown for NT by Costea et al. (2005).
  • Polygonum aviculare L. subsp. depressum (Meisner) Arcangeli, OVAL-LEAF KNOTWEED. Shown for NT by Costea et al. 2005).
  • Rumex crispus Linnaeus, CURLY DOCK. Shown for NT by Mosyakin (2005).
  • Rumex sibiricus Hultén, SIBERIAN WILLOW DOCK. Shown in NT by Mosyakin (2005). Included by Porsild and Cody (1980) in Rumex triangulivalvis (Danser) Rech. f.

    CARYOPHYLLACEAE

  • Cerastium arcticum Lange in G.C. Oeder et al., ARCTIC MOUSE-EAR CHICKWEED. Shown for NT by Morton (2005b), but this is apparently based on a specimen from Southampton Island (Cody 1071, DAO), and thus not to be listed for the continental flora.
  • Cerastium bialynickii Tolmatchew. BIALYNICK'S MOUSE-EAR CHICKWEED. Shown for NT by Morton (2005b).
  • Gypsophila elegans M. Bieberstein, SHOWY BABY-BREATH. Shown for NT by Pringle (2005).
  • Minuartia groenlandica (Retzius) Ostenfeld, GREENLAND STICHWORT. Shown for NU by Rabeler et al. (2005). There is a specimen at MTMG (photo DAO) collected by Anderson in 1885 on the MacKenzie River, but the locality may be in error.
  • Silene sorensenis (B. Boivin) Bocquet, THREE-FLOWER CAMPION. Reported for NT and NU by Morton (2005a).
  • Spergularia canadensis (Persoon) G. Don var. canadensis, CANADIAN SANDSPURRY. Shown for NU by Hartman and Rabeler (2005), possibly on the basis of specimens (photo DAO) once in Lepage's personal herbarium (and likely duplicated elsewhere) from James Bay, and consequently not to be listed for the continental flora.

    LAMIACEAE

  • Galeopsis tetrahit L. var. tetrahit, BRITTLE-STEM HEMP-NETTLE. This variety is reported by Kartesz and Meacham (1999) on the basis of a personal communication.

    NOTES

    Unless otherwise indicated, these changes are a result of revisions in the Flora of North America series. More detailed explanations and common names are provided for the species which are deleted.

    With regard to the name changes, the old familiar names are provided first to enable someone using the Porsild and Cody (1980) flora for identification to conveniently check to see if a more current name is available.

  • Alopecurus alpinus S.M. in Porsild and Cody (1980) is now correctly called A. magellanicus Lam.
  • Arenaria capillaris Poir. var. nardifolia (Ledeb.) Regel in Porsild and Cody (1980) is now Eremogone capillaris (Poir.) Fenzl var. capillaris.
  • Armeria maritima (Miller) Willdenow - only one subspecies is currently recognized in NT that being subspecies sibirica (Truczaninow) Nyman.
  • Aster brachyactis S.F. Blake in Porsild and Cody (1980) is now Symphyotrichum ciliatum (Ledebour) G.L. Nesom.
  • Aster ciliolatus Lindley in W.J. Hooker in Porsild and Cody (1980) is now Symphyotrichum ciliolatum (Lindley) Á Löve.
  • Aster falcatus Lindley in W.J. Hooker in Porsild and Cody (1980) is now Symphyotrichum falcatum (Lindley) G.L. Nesom var. falcatum.
  • Aster junciformis Rydberg in Porsild and Cody (1980) is now Symphyotrichum boreale (Torrey & A. Gray) Á Löve and D. Löve.
  • Aster nahanniensis Cody in Porsild and Cody (1980) is now Symphyotrichum nahanniense Semple in J.C. Semple et al.
  • Aster pansus (S.F. Blake) Cronquist in Porsild and Cody (1980) is now Symphyotrichum ericoides (L.) G.L. Nesom var. pansum (S.F. Blake) G.L. Nesom.
  • Aster pauciflorus Nuttall in Porsild and Cody (1980) is now Almutaster pauciflorus (Nuttall) Á Löve and D. Löve.
  • Aster pygmaeus Lindley in W.J. Hooker in Porsild and Cody (1980) is now Symphyotrichum pygmeum (Lindley) Brouillet & S. Selliah.
  • Aster spathulatus Lindley in W.J. Hooker in Porsild and Cody (1980) is now Symphyotrichum spathulatum (Lindley) G.L. Nesom.
  • Aster yukonensis Cronquist in Porsild and Cody (1980) is now Symphyotrichum yukonense (Cronquist) G.L. Nesom.
  • Astragalus robbinsii (Oakes) Gray var. minor (Hook.) Barneby. Robins' Milk-Vetch was not reported by Porsild and Cody (1980) but was reported by Scoggan (1978, p.989) from Great Bear Lake. The record was assumed to be based on Burnaby's atlas (1964), but was not mapped by Burnaby nor mentioned in his text for NT. There is no specimen at CAN or DAO from the latter location but there is a specimen at CAN labelled as A. robbinsii from further south in the Mackenzie Valley (63.4333 N., -123.6333 W., D.E. Reid 700). This specimen has some flowers mostly bluish, a short raceme and single curved branch 18 cm long that may well have been prostrate making it a match for the widespread and common A. alpinus L. subsp. alpinus. Consequently A. robbinsii is excluded from the flora.
  • Carex anguillata Drej. was reported by Kartesz and Meacham (1999) on the basis of three specimens at DAO, but is now treated as a synonym of Carex bigelowii Torr. ex Schwein. in Flora of North America.
  • Carex anthoxanthea J. Presl & C. Presl in C.B. Presl. Grassy-Slope Arctic Sedge, a species chiefly of the Pacific Coast, was reported by Scoggan (1978 p.380) on the basis of a specimen at CAN from the Taltson River. It was not reported from NT by Porsild and Cody (1980), and not recently by Murray (2002). There are no specimens from NT labelled as Carex anthoxanthea at CAN or DAO. Consequently it is excluded.
  • Carex exsiccate Bailey. Western Inflated Sedge, although shown for NT by Kartesz and Meacham (1999) based on Scoggan (1979 p. 391), was in fact indicated by Scoggan to occur in Mackenzie District only with a question mark based on Boivin's (1967, p. 484) report which was also accompanied by a question mark. There are no specimens of Carex exsiccate from NT at CAN or DAO, and NT was not included in the range indicated by Reznicek and Ford (2002). Thus it is excluded from the flora.
  • Cirsium vulgare (Savi) Ten. Bull Thistle is indicated for NT by Kartesz and Meacham (1999), on the basis of Hultén and Fries (1986), but in fact there is no reference to it in the latter publication so it is to be excluded from the flora.
  • Colpodium vahlianum (Liebm.) Nevski is now Puccinellia vahliana (Liebm.) Scribn. & Merr. (Davis and Consaul 2006).
  • Crepis tectorum L. Narrow Leaved Hawk's-Beard was reported as new for NT (Catling 2005) but was previously included by Porsild and Cody (1980).
  • Eleocharis macrostachya Britton in J.K. Small. Pale Spike-Rush, although included for NT by Porsild & Cody (1980) as a synonym of E. uniglumis (Link) Schultes, is now recognized as a species. It was first reported by Cody (1960), the specimens at DAO having been subsequently revised to E. palustris (L.) Roemer & Schultes in J.J. Roemer et al.
  • Erigeron grandiflorus Hooker subsp. arcticus Porsild in Porsild and Cody (1980) is now Erigeron porsildii G.L. Nesom & D.F. Murray
  • Erigeron purpuratus Greene. Some of the material treated as this species by Porsild and Cody (1980) has been revised to E. denalii A. Nelson (Nesom 2006). See also Nesom & Murray (2004) for more information on this group.
  • Erigeron nivalis Nuttall, . Reported in NT by Nesom (2006) and listed by Porsild & Cody (1980) as E. acris L. var. debilis Gray.
  • Festuca ovina L. subsp. alaskana Holmen in Porsild and Cody (1980) is now Festuca brevissima Jurtzev. A number of collections initially identified as the former (at DAO) have been revised to F. lenensis.
  • Grindelia squarrosa (Pursh) Dunal in Porsild and Cody (1980) is now treated as a different species, Grindelia hirsutula Hooker & Arnott.
  • Helictotrichon hookeri (Scribn.) Henry in Porsild and Cody (1980) is now treated as Avenula hookeri (Scribn.) Holub.
  • Hesperis matronalis L. Mother-of-the-Evening was reported by Kartesz and Meacham (1999) on the basis of a communication from W.J. Cody. The specimen at DAO (W.J. Cody 8567 and J.M. Matte, 4 July 1955) was collected along a Caragana hedge in front of a school at Fort Providence and is indicated on the label to have been possibly planted; consequently it is excluded from the flora.
  • Hierochloe alpine (Sw.) R.S. in Porsild and Cody (1980) is now treated as Anthoxanthum monticola (Bigelow) Veldkamp.
  • Hierochloe odorata (L.) Beauv. in Porsild and Cody (1980) is now Anthoxanthum hirtum (Schrank) Y. Schouten & Veldkamp.
  • Hierochloe pauciflora R.Br. in Porsild and Cody (1980) is now treated as Anthoxanthum arcticum Veldkamp.
  • Hippuris montana Ledeb. Mountain Mare's-Tail was reported from the District of Mackenzie by Scoggan (1979, p.148) and Porsild and Cody (1980). The justifying specimen for these reports from Brintnell Lake (62.0833 N-127.5833 W, M. Raup and J.H. Soper 9720, CAN) is without flowers or fruits so differences in these characters (see Hitchcock and Cronquist 1973) cannot be used to identify it. Although Porsild and Cody (1980) and Cody (1996) used only the height of the stems to distinguish this species, we consider this character of little value since small, depauperate plants of H. vulgaris cannot be separated. One of the stems is 16 cm tall, more then 1.5 times the limit given by Cody (1996) and Porsild and Cody (1980). This species is excluded from the flora pending collection of specimens more clearly referable to it.
  • Leontodon autumnalis L. subsp. autumnalis, Hawkbit was reported from NT by Kartesz and Meacham (1999), believed to be based a personal communication from W.J. Cody. The only specimen in DAO is a rosette lacking flowers and fruit and dubiously referable to this species (collected at Inuvik). It is therefore excluded from the flora.
  • Melandrium affine J. Vahl is now Silene involucrate (Cham. and Schlecht.) Bocquet.
  • Melandrium apetalum (L.) Fenzl in Porsild and Cody is now Silene uralensis (Ruprecht) Bocquet (as follows) but the synonymy of the group requires further clarification.
  • Melandrium apetalum (L.) Fenzl subsp. arcticum (Fr.) Hultén is now Silene uralensis (Ruprecht) Bocquet subsp. uralensis.
  • Melandrium apetalum (L.) Fenzl subsp. attenuatum (Farr) in Porsild and Cody (1980) is now Silene uralensis (Ruprecht) Bocquet subsp. uralensis.
  • Melandrium drummondii (Wats.) Porsild in Porsild and Cody (1980) is now Silene drummondii Hook.
  • Melandrium ostenfeldii Porsild in Porsild and Cody (1980) is now Silene taimyrensis (Tolm.) Bocquet.
  • Melandrium taimyrense Tolm., in Porsild and Cody (1980) is now Silene taimyrensis (Tolm.) Bocquet.
  • Melandrium taylorae (Robins.) Tolm., in Porsild and Cody (1980) is now Silene involucrata (Cham. & Schlecht.) Bocquet subsp. tenella (Tolm.) Bocquet.
  • Petasites arcticus A.E. Porsild in Porsild and Cody (1980) is now Petasites frigidus (L.) Fries var. palmatus (Aiton) Cronquist.
  • Petasites frigidus (L.) Fries in Porsild and Cody (1980) is now Petasites frigidus (L.) Fries var. frigidus.
  • Petasites hyperboreus Rydberg in Porsild and Cody (1980) is now Petasites frigidus (L.) Fries var. frigidus.
  • Petasites palmatus (Aiton) A. Gray in Porsild and Cody (1980) is now Petasites frigidus (L.) Fries var. palmatus (Aiton) Cronquist.
  • Petasites sagittatus (Banks ex Pursh) A. Gray in Porsild and Cody (1980) is now Petasites frigidus (L.) Fries var. sagittatus (Banks ex Pursh) Cherniawsky.
  • Petasites vitifolius Greene in Porsild and Cody (1980) is now Petasites frigidus (L.) Fries var. X vitifolius (Greene) Cherniawsky.
  • Phacelia campanularia A. Gray. This annual is cultivated as the "California Bluebell," a plant native to the deserts of California. It was introduced to Fort Saskatchewan, Alberta and a population remained there for at least 12 years as a garden weed. It was collected once at Norman Wells (rare in grass near buildings, W.J. Cody 7412 and R.L. Gutteridge, 20 July 1953, DAO 178352). It may have been planted and without evidence of a self-perpetuating population at Norman Wells is excluded from the flora.
  • Phleum commutatum Gaudin in Porsild and Cody (1980) is correctly called Phleum alpinum L.
  • Phragmites australis (Cav.) Tried. ex Steud. has recently been divided into a North American and Eurasian subspecies within North America. The North American subspecies and the one occurring in NT is P. australis subsp. americanus Saltonstall, P.M. Peterson and Soreng.
  • Poa laxa Haenke. This species was reported by Kartesz and Meacham (1999) on the basis of a personal communication from W.J. Cody with a specimen at DAO. The specimen cannot be located and may have been revised to another species and so P. laxa is excluded.
  • Polygonum alaskanum (Small) Wight is now Aconogonom alaskanum (Small) Soják.
  • Polygonum amphibium L. in Porsild and Cody (1980) is now Persicaria amphibian (L.) Gray.
  • Polygonum lapathifolium L. is now Persicaria lapathifolia (L.) Gray.
  • Polygonum viviparum L. in Porsild and Cody (1980) is now Bistorta vivipara (L.) Delarbre.
  • Potamogeton amplifolius Tuckerman. Large-Leaf Pondweed was reported for NT by Kartesz and Meacham (1999) on the basis of a personal communication from W.J. Cody indicating a voucher specimen at DAO. The specimen was revised to P. illinoensis T. Morong by E. Ogden in 1966 and confirmed as that by B. Boivin in 1967 and by R. Haynes in 1995. We agree with this identification so that P. amplifolius is to be excluded from the flora of the NT.
  • Potentilla villosa Pallas ex Pursh, This species was reported for NT by Kartesz and Meacham (1999) on the basis of a personal communication from W.J. Cody indicating a voucher specimen at DAO. However, we have not been able to locate a voucher at DAO and P. villosa apparently does not occur in continental Northwest Territories (Elven & Murray 2008).
  • Saxifraga aizoon Jacq. var. neogaea Butters, now called Sedum aizoon L. (Aizoon Stonecrop) was known previously in NT only from the extreme E end of Great Slave Lake was reported from another location in Great Slave Lake (62.73325, -110.73238) but the specimen has not been seen (D. Downing, pers. comm.)
  • Sedum lanceolatum Torr. Although Lance-Leaf Stonecrop was shown for NT by Kartesz and Meacham (1999) based on Porsild and Cody (1980), it was in fact only included by Porsild and Cody on the basis of expectation and since no recent record or justifying specimens have come to our attention, we recommend that it be excluded from the flora.
  • Senecio streptanthifolius Greene in Porsild and Cody (1980) is now Packera streptanthifolia (Greene) W.A. Weber and Á Löve.
  • Senecio atropurpureus (Ledebour) B. Fedtschenko in Porsild and Cody (1980) is now Tephroseris frigida (Richardson) Holub.
  • Senecio congestus (R. Brown) de Candolle in Porsild and Cody (1980) is now Tephroseris palustris (L.) Reichenbach.
  • Senecio cymbalaria Pursh in Porsild and Cody (1980) is now Packera cymbalaria (Pursh) Á Löve and D. Löve.
  • Senecio hyperborealis Greenman in Porsild and Cody (1980) is now Packera hyperborealis (Greenman) Á Löve and D. Löve.
  • Senecio indecorus Greene in Porsild and Cody (1980) is now Packera indecora (Greene) Á Löve and D. Löve.
  • Senecio kjellmanii A.E. Porsild in Porsild and Cody (1980) is now Tephroseris kjellmanii (Porsild) Holub.
  • Senecio lindstroemii (Ostenfeld) A.E. Porsild in Porsild and Cody (1980) is now Tephroseris lindstroemii (Ostenfeld) Á Löve and D. Löve.
  • Senecio ogotorukensis Packer in Porsild and Cody (1980) is now Packera ogotorukensis (Packer) Á Löve and D. Löve.
  • Senecio pauciflorus Pursh in Porsild and Cody (1980) is now Packera pauciflora (Pursh) Á Löve and D. Löve.
  • Senecio pauperculus Michaux in Porsild and Cody (1980) is now Packera paupercula (Michaux) Á Löve and D. Löve.
  • Senecio yukonensis A.E. Porsild in Porsild and Cody (1980) is now Tephroseris yukonensis (A.E. Porsild) Holub.
  • Solidago canadensis L. var. salebrosa (Piper) M. E. Jones in Porsild and Cody (1980) is now treated as Solidago lepida de Candolle subsp. lepida var. salebrosa (Piper) Semple.
  • Solidago decumbens Greene in Porsild and Cody (1980) is now Solidago simplex Kunth var. simplex.
  • Spergularia marina (L.) Grisebach in Porsild and Cody (1980) is now called Spergularia salina J. Presl and C. Presl.
  • Thalictrum occidentale Gray. Western Meadow-Rue was reported for NT by Kartesz and Meacham (1999) on the basis of a specimen at DAO and the literature report of Scoggan (1978a). Male plants are difficult to identify and the specimen from Fisherman Lake west of Fort Liard (9 June 1973, Sheila Lamont FL-53, DAO 333723) is male. The filaments are mostly less then 3.5 mm suggesting Thalictrum venulosum Trelease, and on this basis, T. occidentale is to be excluded from the flora.

    Acknowledgements Dr. David Murray and Dr. Adolf Ceska provided useful comments.

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