Psilocarphus oregonus |
Psilocarphus tenellus |
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Oregon woollyheads |
slender woollyheads |
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Habit | Plants 1–10 cm. | Plants 2–8 cm. |
Stems | often much branched from base and clump-forming. |
usually much branched throughout, prostrate; clump-forming or spreading; up to 15 cm. |
Cauline leaves | 3–18 mm, linear or narrowly oblanceolate, mostly 6–12 × as long as wide. |
3–12 mm, oblong or oblanceolate to obovate or elliptic, mostly 1.5–6 × as long as wide. |
Receptacles | unlobed. |
unlobed. |
Fruits | cylindric, 0.6–1.2 mm, brown. |
obovoid, 0.6–1.2 mm, brown. |
Heads | largest 4–6 mm in diameter. |
3–5.5 mm in diameter. |
Outer paleae | 20–80, 1.5–2.7 mm. |
25–50, 1.2–2.5 mm. |
Inner corollas | 0.7–1.4 mm; lobes usually 4. |
0.8–1.5 mm; lobes usually 5. |
Psilocarphus oregonus |
Psilocarphus tenellus |
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Distribution | ||
Discussion | Openings in forests, woodlands, shrublands, grasslands, dry beds of vernal pools. Flowering May–Jul. 100–1900 m. BR, ECas, Sisk, WV. CA, ID, NV, WA. Native. |
Grasslands, beaches, riverbanks, sandbars, roadsides, disturbed areas. Flowering May–Aug. 0–1300 m. CR, ECas, Est, Owy, Sisk, WV. CA, ID, WA; north to British Columbia, south to Mexico. Native. |
Source | Flora of Oregon, volume 2, page 329 Kenton Chambers |
Flora of Oregon, volume 2, page 329 Kenton Chambers |
Sibling taxa | ||
Synonyms | Psilocarphus tenellus var. tenellus | |
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