Erysimum franciscanum |
Erysimum insulare |
|
---|---|---|
Franciscan wallflower, San Francisco wallflower |
island wallflower |
|
Habit | Perennials or subshrubs. | Perennials or subshrubs. |
Stems | erect, often branched distally, (woody at base), 0.6–5(–6) dm. |
ascending to sprawling, proximal branches terminating in sterile rosettes, (woody at base), 0.5–3 dm. |
Basal leaves | (often withered in suffrutescent plants); blade oblanceolate to oblanceolate-linear, 2.5–17 cm × (2–)3–16(–20) mm, base attenuate, margins sinuate-dentate or dentate, apex acute. |
blade linear to linear-oblanceolate, (2–)3.7–9 cm × 2–5(–10) mm, base attenuate, margins usually entire, rarely sparsely denticulate, apex acute. |
Cauline leaves | (distal) petiolate; blade margins usually dentate, rarely denticulate. |
(distal) sessile; similar to basal. |
Racemes | considerably elongated in fruit. |
considerably elongated in fruit. |
Flowers | sepals oblong to linear-oblong, 8–12(–15) mm, lateral pair saccate basally; petals yellow to cream, obovate to suborbicular, 14–29 × 5–12(–15) mm, claw 9–17 mm, apex rounded; median filaments 9–15 mm; anthers linear, 2.5–4 mm. |
sepals oblong to linear-oblong, 6–10 mm, lateral pair slightly saccate basally; petals yellow, broadly obovate to suborbicular, (11–)14–20(–22) × (3–)4–11.5 mm, claw 7–10 mm, apex rounded; median filaments 7–10 mm; anthers linear, 2–3 mm. |
Fruiting pedicels | divaricate to ascending, stout, narrower than fruit, 5–17(–22) mm. |
widely spreading, slender, narrower than fruit, (8–)10–22 mm. |
Fruits | usually ascending, rarely spreading, narrowly linear, straight or curved upward, not or, rarely, slightly torulose, (3.8–)4–11(–14) cm × 2–4 mm, latiseptate, not striped; valves with somewhat prominent midvein, pubescent outside, trichomes (2 or) 3 (or 4)-rayed, glabrous inside; ovules 32–64 per ovary; style cylindrical, slender, 0.5–3.5 mm, sparsely pubescent; stigma 2-lobed, lobes as long as wide. |
ascending to spreading, narrowly linear, straight or only slightly curved inward, not torulose, 2–5(–7) cm × 2–3 mm, angustiseptate, not striped; valves with prominent midvein, pubescent outside, trichomes 2–4-rayed, glabrous inside; ovules 36–50 per ovary; style cylindrical or slightly flattened, stout, 1–4 mm, sparsely pubescent; stigma slightly 2-lobed, lobes as long as wide. |
Seeds | oblong, 2–3.5(–4) × 1.2–2.2(–2.5) mm; wing distal, present on 1 or both margins. |
oblong, 1–2 × 1.2–2 mm; not winged. |
Trichomes | of leaves 2-rayed mixed with 3(–5)-rayed ones. |
|
Tri | -chomes of leaves primarily 2-rayed, sometimes mixed with 3-rayed ones. |
|
2n | = 36. |
= 36. |
Erysimum franciscanum |
Erysimum insulare |
|
Phenology | Flowering Jan–Apr. | Flowering Mar–May. |
Habitat | Serpentine outcrops, coastal scrub or sand dunes, granitic hillsides | Sandy areas along coastal bluffs, coastal scrub |
Elevation | 0-500 m (0-1600 ft) | 0-300 m (0-1000 ft) |
Distribution |
CA
|
CA
|
Discussion | Erysimum franciscanum is known from Marin, San Francisco, San Mateo, and Santa Cruz counties. Historical records indicate that it grew previously in Sonoma County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Erysimum insulare is restricted to the northern Channel Islands (San Miguel and Santa Rosa islands) of western Ventura County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 540. | FNA vol. 7, p. 542. |
Parent taxa | Brassicaceae > tribe Erysimeae > Erysimum | Brassicaceae > tribe Erysimeae > Erysimum |
Sibling taxa | ||
Synonyms | E. franciscanum var. crassifolium | Cheiranthus insulare |
Name authority | Rossbach: Aliso 4: 118. (1958) | Greene: Bull. Torrey Bot. Club 13: 218. (1886) |
Web links |