Erysimum menziesii
Erysimum pallasii
Menzies' wallflower
Pallas' wallflower
erect, unbranched or branched distally, 0.2–2.5(–3.5) dm.
erect, unbranched, (0.1–)0.4–4dm.
blade (fleshy or not), spatulate, 2–10 cm × 5–15 mm, base cuneate, margins dentate, entire, or lobed, apex obtuse.
blade linear to narrowly linear-oblanceolate, 3–5 cm × 1–2 mm, base attenuate, margins entire or denticulate.
(distal) sessile or short-petiolate;
blade margins entire or dentate.
blade reduced distally, often as bracts.
elongated slightly in fruit.
(sometimes bracteate basally), elongated in fruit.
sepals oblong, 7–14 mm, lateral pair saccate basally;
petals yellow, usually suborbicular, rarely obovate, 15–30 × 6–14 mm, claw 10–15 mm, apex rounded;
median filaments 10–13 mm;
anthers linear, 3–4 mm.
sepals oblong or narrowly so, 5–9 mm, lateral pair slightly saccate basally;
petals usually purple, rarely lilac, oblanceolate to broadly obovate, 10–20 × 3–5 mm, claw 5–9 mm, apex rounded;
median filaments 6–9 mm;
anthers narrowly oblong, 1–1.5 mm.
horizontal to divaricate, slender, narrower than fruit, 4–15 mm.
divaricate to ascending, slender, narrower than fruit, (4–)7–24(–35) mm.
widely spreading or divaricate, linear, straight, not torulose, 3–14 cm × 2–4 mm, terete when green, becoming latiseptate when dry, not striped;
valves with obscure midvein, pubescent outside, trichomes (2 or) 3 or 4 (or 6)-rayed, glabrous inside;
ovules 32–74 per ovary;
style cylindrical, slender, 0.3–2 mm, sparsely pubescent;
stigma 2-lobed, lobes as long as wide.
erect to divaricate-ascending, narrowly linear, straight or curved inward, not torulose, (3–)5–11(–13) cm × 2–4 mm, latiseptate, not striped;
valves with prominent midvein, pubescent outside, trichomes 2-rayed, glabrous inside;
ovules (28–)36–74 per ovary;
style cylindrical, stout, 0.5–3 mm, sparsely pubescent;
stigma strongly 2-lobed, lobes as long as wide.
oblong (compressed), 1.8–2.8(–3.5) × 1–2 mm; winged distally (wing narrow all around).
oblong, 1.7–2.2 × 0.9–0.1.4 mm;
not winged.
of leaves 2–5(–7)-rayed on adaxial leaf surface.
of leaves 2-rayed.
= 36.
= 24, 36.
Erysimum menziesii
Erysimum pallasii
Of conservation concern.
Erysimum menziesii is restricted to the coasts of Humboldt, Mendocino, and Monterey counties. R. A. Price (1993) divided the species into four subspecies, three of which were invalidly published.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
R. C. Rollins (1993) and G. A. Mulligan (2002) listed haploid chromosome numbers of n = 12, 14, 18, and 21 for Erysimum pallasii, but it is doubtful that those deviating from x = 6 are correct. Tetraploid counts (2n = 24) are known from both Canada and Russian Far East, whereas hexaploid counts are known only from the latter region. G. B. Rossbach (1958) and Rollins recognized plants with racemes bracteate to the middle as var. bracteosum, but this distinction is rather artificial, and the species shows considerable variation in the number of bracteate flowers.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
BC
PNW Herbaria
