Difference between revisions of "Erysimum coarctatum"
Rhodora 29: 141. 1927.
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|place=29: 141. 1927 | |place=29: 141. 1927 | ||
|year=1927 | |year=1927 | ||
+ | }} | ||
+ | |special_status={{Treatment/ID/Special_status | ||
+ | |code=E | ||
+ | |label=Endemic | ||
}} | }} | ||
|basionyms= | |basionyms= | ||
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|name=Erysimum inconspicuum var. coarctatum | |name=Erysimum inconspicuum var. coarctatum | ||
|authority=(Fernald) Rossbach | |authority=(Fernald) Rossbach | ||
+ | |rank=variety | ||
}} | }} | ||
|hierarchy=Brassicaceae;Brassicaceae tribe Erysimeae;Erysimum;Erysimum coarctatum | |hierarchy=Brassicaceae;Brassicaceae tribe Erysimeae;Erysimum;Erysimum coarctatum | ||
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|elevation=200-3000 m | |elevation=200-3000 m | ||
|distribution=Alta.;Nfld. and Labr. (Nfld.);N.W.T.;Que.;Yukon;Alaska. | |distribution=Alta.;Nfld. and Labr. (Nfld.);N.W.T.;Que.;Yukon;Alaska. | ||
− | |discussion=<p>Both G. B. Rossbach (1958, 1958b) and R. C. Rollins (1993) treated Erysimum coarctatum as a variety of E. inconspicuum. However, the morphological and cytological (G. A. Mulligan 2002) differences clearly support its maintenance as a distinct species. The vast majority of the collections from Yukon belong to E. coarctatum, and the species is reported herein from Alberta [Banff, Clark s.n., July-August (GH)] for the first time. The records from Alaska are based on Scamman 5062 (GH) from Eklutna Lake and Wiggins 12886 (GH) from Umiat on Colville River.</p> | + | |discussion=<p>Both G. B. Rossbach (1958, 1958b) and R. C. Rollins (1993) treated <i>Erysimum coarctatum</i> as a variety of <i>E. inconspicuum</i>. However, the morphological and cytological (G. A. Mulligan 2002) differences clearly support its maintenance as a distinct species. The vast majority of the collections from Yukon belong to <i>E. coarctatum</i>, and the species is reported herein from Alberta [Banff, Clark s.n., July-August (GH)] for the first time. The records from Alaska are based on Scamman 5062 (GH) from Eklutna Lake and Wiggins 12886 (GH) from Umiat on Colville River.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Erysimum coarctatum | name=Erysimum coarctatum | ||
− | |||
|authority=Fernald | |authority=Fernald | ||
|rank=species | |rank=species | ||
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|publication title=Rhodora | |publication title=Rhodora | ||
|publication year=1927 | |publication year=1927 | ||
− | |special status= | + | |special status=Endemic |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_854.xml |
|tribe=Brassicaceae tribe Erysimeae | |tribe=Brassicaceae tribe Erysimeae | ||
|genus=Erysimum | |genus=Erysimum |
Latest revision as of 23:36, 5 November 2020
Biennials or perennials; (caudex thickened, usually simple, rarely branched). Trichomes of leaves 2- (or 3-) rayed. Stems erect, unbranched or branched basally and/or distally, (0.8–)1.5–7(–9.4) dm. Basal leaves: blade oblanceolate to linear-oblanceolate, 2–7 cm × 2–7 mm, base attenuate, margins entire or denticulate, apex acute. Cauline leaves sessile; blade margins entire or denticulate. Racemes (densely flowered), elongated or not in fruit. Fruiting pedicels usually ascending, rarely divaricate-ascending, stout, slightly narrower than fruit, (often crowded), 4–7(–10) mm. Flowers: sepals linear-oblong, 5–8 mm, lateral pair saccate basally; petals yellow, narrowly obovate to spatulate, (8–)10–15 × (2–)2.5–4 mm, claw 6–9 mm, apex rounded; median filaments 6–10 mm; anthers narrowly linear, 1.7–2 mm. Fruits suberect to ascending, (subappressed to rachis or not), narrowly linear, straight, not torulose, 2.5–5.8(–6.4) cm × 1.8–2.5 mm, slightly 4-angled, not striped; valves with somewhat prominent midvein, pubescent outside, trichomes 2–4-rayed, glabrous inside; ovules 40–56 per ovary; style stout, 0.5–1.5 mm, moderately to sparsely pubescent; stigma strongly 2-lobed, lobes as long as wide. Seeds ovoid to oblong, 1.5–2 × 1–1.2 mm; not winged. 2n = 54.
Phenology: Flowering Jul–Aug.
Habitat: Calcareous talus and cliffs, meadows, bluffs, spruce forests, roadsides, crevices, ledges
Elevation: 200-3000 m
Distribution
Alta., Nfld. and Labr. (Nfld.), N.W.T., Que., Yukon, Alaska.
Discussion
Both G. B. Rossbach (1958, 1958b) and R. C. Rollins (1993) treated Erysimum coarctatum as a variety of E. inconspicuum. However, the morphological and cytological (G. A. Mulligan 2002) differences clearly support its maintenance as a distinct species. The vast majority of the collections from Yukon belong to E. coarctatum, and the species is reported herein from Alberta [Banff, Clark s.n., July-August (GH)] for the first time. The records from Alaska are based on Scamman 5062 (GH) from Eklutna Lake and Wiggins 12886 (GH) from Umiat on Colville River.
Selected References
None.