11.
Erysimum inconspicuum
(S. Watson) MacMillan, Metasp. Minnesota Valley. 268. 1892.
Erysimum asperum
(Nuttall) de Candolle var.
inconspicuum
S. Watson, Botany (Fortieth Parallel), 24. 1871;
Cheiranthus inconspicuus
(S. Watson) Greene;
C. syrticola
(E. Sheldon) Greene;
Cheirinia inconspicua
(S. Watson) Rydberg;
C. parviflora
Farwell;
C. syrticola
(E. Sheldon) Rydberg;
E. asperum
var.
parviflorum
M. E. Jones;
E. inconspicuum
var.
syrticola
(E. Sheldon) Farwell;
E. syrticola
E. Sheldon
Biennials or perennials;
(short-lived, caudex thickened, usually simple, rarely branched).
Trichomes
of leaves 2- or 3-rayed.
Stems
erect, unbranched or branched distally, 1.5-7 dm.
Basal leaves:
blade linear to linear-oblanceolate, 1.5-6(-8) cm × 2-8 mm, base attenuate, margins entire or dentate, apex acute.
Cauline leaves
(distal) sessile; blade margins entire or denticulate.
Racemes
elongated or not in fruit.
Fruiting pedicels
divaricate-ascending to ascending, stout, slightly narrower than fruit, 4-9(-15) mm.
Flowers
: sepals oblong to linear-oblong, 4-6 mm, lateral pair slightly saccate basally; petals yellow, oblanceolate, 6-9 (-11) × 1-2 mm, claw 5-7 mm, apex rounded; median filaments 5-7 mm; anthers narrowly oblong to linear, 1-2 mm.
Fruits
ascending to divaricate-ascending, (not appressed to rachis), narrowly linear, straight, not torulose, 3-5.8(-7) cm × 1-1.5(-1.8) mm, slightly 4-angled or terete, not striped; valves with somewhat prominent midvein, pubescent outside, trichomes 2-4-rayed, glabrous inside; ovules 36-66 per ovary; style cylindrical, stout, 0.7-3 mm, moderately to sparsely pubescent; stigma strongly 2-lobed, lobes as long as wide.
Seeds
ovoid, 1.2-1.7 × 0.8-1 mm; not winged or wing apiculate.
2
n
= 81.
Flowering Apr-Aug. Calcareous talus and cliffs, roadsides, railroad embankments, abandoned fields, hillsides, alkaline ground, bluffs, crevices and ledges, gravel, prairies, rocky pastures, among brush, waste sites; 100-2700 m; Alta., B.C., Man., N.S., Ont., Que., Sask., Yukon; Alaska, Ark., Colo., Idaho, Ill., Ind., Kans., Maine, Mich., Minn., Mo., Mont., Nev., N.H., N.Y., N.Dak., Ohio, Okla., Oreg., S.Dak., Utah, Wis., Wyo.
Erysimum inconspicuum
is known in Yukon from
Raup & Correll 11255
(A), which was collected 7 miles east of Little Atlin Lake, and
Malte s.n.
(GH), which was collected from Dawson on 10 August 1916. Most of the other collections from Yukon identified as
E. inconspicuum
belong to
E. coarctatum
. The record from Quebec is based on
Cayouette J80-8
(GH), from Cté de Charlevoix, and
Victorin, Germain, & Meilleur 43128
(GH), from Du Lac-Saint-Jean.
