Erysimum perenne |
Erysimum ammophilum |
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Sierra wallflower |
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Habit | Plants perennial, rarely biennial; with slender caudices. | |
Stems | 0.4–6.5 dm. |
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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. |
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Cauline leaves | margins upper often entire, sessile. |
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Inflorescences | fruiting pedicels divaricate-ascending; slender, 4–12 mm; narrower than fruits. |
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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. |
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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. |
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Seeds | ovoid, 2–3.4 × 1–2 mm; wingless or rarely distally winged. |
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Trichomes | 2–5-rayed. |
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2n | =36. |
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Erysimum perenne |
Erysimum ammophilum |
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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. |
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Source | Flora of Oregon, volume 2, page 486 Ihsan Al-Shehbaz |
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Sibling taxa | ||
Synonyms | Erysimum capitatum ssp. perenne, Erysimum capitatum var. perenne | |
Web links |