Flora of North America species comparison

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Erysimum menziesii

Menzies' wallflower
Habit Biennials or perennials; (short-lived).
Stems

erect, unbranched or branched distally, 0.2–2.5(–3.5) dm.
Basal leaves

blade (fleshy or not), spatulate, 2–10 cm × 5–15 mm, base cuneate, margins dentate, entire, or lobed, apex obtuse.
Cauline leaves

(distal) sessile or short-petiolate;

blade margins entire or dentate.
Racemes

elongated slightly in fruit.
Flowers

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.
Fruiting pedicels

horizontal to divaricate, slender, narrower than fruit, 4–15 mm.
Fruits

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.
Seeds

oblong (compressed), 1.8–2.8(–3.5) × 1–2 mm; winged distally (wing narrow all around).
Trichomes

of leaves 2–5(–7)-rayed on adaxial leaf surface.
2n

= 36.

Erysimum menziesii
Phenology Flowering Jan–Aug.
Habitat Stabilized coastal sand dunes
Elevation 0-300 m (0-1000 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

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.)
Source FNA vol. 7, p. 542.
Parent taxa Brassicaceae > tribe Erysimeae > Erysimum
Sibling taxa
E. ammophilum, E. arenicola, E. asperum, E. capitatum, E. cheiranthoides, E. cheiri, E. coarctatum, E. concinnum, E. franciscanum, E. hieraciifolium, E. inconspicuum, E. insulare, E. occidentale, E. pallasii, E. perenne, E. repandum, E. suffrutescens, E. teretifolium
Synonyms Hesperis menziesii, Cheiranthus grandiflorus
Name authority (Hooker) Wettstein: Oesterr. Bot. Z. 39: 283. (1889)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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