Erysimum perenne |
Erysimum repandum |
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Sierra wallflower |
repand wallflower, spreading wallflower |
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Habit | Plants perennial, rarely biennial; with slender caudices. | Plants annual. |
Stems | 0.4–6.5 dm. |
(0.4)1.5–4.5(7) dm. |
Basal leaves | spatulate to broadly oblanceolate, 2.5–7 cm × 3–10 mm; margins dentate or subentire; surfaces adaxially pubescent with 2(5)-rayed trichomes. |
often withered by fruiting; middle cauline leaves linear, narrowly oblanceolate, elliptic, or oblong; (1)2–8(11) cm × (2)5–12(17) mm; margins sinuate, dentate, or repand, petiolate. |
Cauline leaves | margins upper often entire, sessile. |
upper entire or denticulate, sessile. |
Inflorescences | fruiting pedicels divaricate-ascending; slender, 4–12 mm; narrower than fruits. |
fruiting pedicels divaricate; stout, 2–4(6) mm; width ? fruit. |
Flowers | sepals linear-oblong to oblong, 8–12 mm; lateral pair saccate; petals 15–22 × 3.5–6 mm; blades broadly obovate to suborbicular, yellow; claws 8–14 mm; petal tips rounded; median filaments 7–14 mm; ovules 26–44 per ovary; styles (1.5)2–5.5 mm; stigmas subentire to slightly 2-lobed. |
sepals oblong, 4–6 mm; lateral pair not saccate; petals oblanceolate to spatulate, 6–8 × 1.5–2 mm, yellow; claws 3–6 mm; petal tips rounded; median filaments 4–6 mm; ovules (40)50–80(90) per ovary; styles stout, 1–4 mm, sparsely pubescent; stigmas slightly 2-lobed. |
Fruits | latiseptate, torulose, 3.8–14 cm × 1.2–3 mm; valves with distinct midveins, pubescent outside with 2- or 3(4)-rayed trichomes, glabrous to sparsely pubescent inside. |
4-angled; somewhat torulose; (2)3–8(10) cm × 1.5–2 mm; valves with distinct midveins, pubescent outside with 2(3)-rayed trichomes, glabrous or rarely sparsely pubescent inside. |
Seeds | ovoid, 2–3.4 × 1–2 mm; wingless or rarely distally winged. |
oblong, 1.1–1.5 × 0.6–0.7 mm; wingless or rarely distally winged. |
Trichomes | 2–5-rayed. |
2(3)-rayed. |
2n | =36. |
=16. |
Erysimum perenne |
Erysimum repandum |
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Distribution | ||
Discussion | Knolls, rocky slopes, alpine fell-fields, gravelly grounds, talus, granitic sand. Flowering Jun–Sep. 1700–2400 m. Casc, Sisk. CA, ID, NV. Native. Erysimum perenne was treated as a variety or invalidly published subspecies of E. capitatum by Rollins (1993) and Price (1993), respectively. It is easily separated from the latter by its torulose (vs. non-torulose) and flattened (vs. 4-angled or rarely flattened) fruit, styles (1.5)2–5.5 mm (vs. 0.2–2.5(3) mm), and yellow (vs. orange to rarely yellow) petals. |
Roadsides, disturbed areas, pastures, fields, barren hillsides. Flowering Apr–Jun. 0–2600 m. BR, BW, Casc, Col, ECas, Lava, Owy, Sisk, WV. CA, ID, NV, WA; scattered throughout southern Canada and US; Africa, Asia, Europe. Exotic. |
Source | Flora of Oregon, volume 2, page 486 Ihsan Al-Shehbaz |
Flora of Oregon, volume 2, page 486 Ihsan Al-Shehbaz |
Sibling taxa | ||
Synonyms | Erysimum capitatum ssp. perenne, Erysimum capitatum var. perenne | |
Web links |
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