Trillium rivale |
Trillium ovatum |
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brook trillium, brook wakerobin |
western trillium |
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Leaves | 1.7–11 cm × 0.8–6 cm, blue-green; glossy; leathery; apex acute to acuminate; base lanceolate to cordate; petioles (0.5)1– 3(6) cm. |
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Scapes | 1–2, 4–20 cm, glabrous. |
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Flowers | pedicel 2-10 cm; sepals 3, green, lanceolate or ovate to oblong, 10–23 × 4–8(11)mm; margins entire; apex rounded to apiculate; petals erect to spreading; ovate-cordate to orbicular, 1.3–2.8(3) × (0.8)1–2.4 cm, white, usually with dark purple spots; base rounded to cuneate; margins entire; apex apiculate to acuminate; veins inconspicuous or sometimes with pale venation; stamens 6–15 mm; erect; filaments white; anthers straight, 3–6 mm, yellow; ovary ovoid, 3–9 × 4 mm, white to cream, weakly 6-angled; stigmas recurved, 2–4 mm, white to cream. |
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Fruits | globose; greenish white. |
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Trillium rivale |
Trillium ovatum |
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Distribution | ||
Discussion | Stream banks, talus slopes, forest clearings, generally in serpentine soils. Flowering Mar–Jul. 50–1300m. CR, Sisk. CA. Native. This species is sometimes placed in its own monotypic genus, Pseudotrillium. |
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Source | Flora of Oregon, volume 1, page 316 Tamra Prior |
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Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Pseudotrillium rivale | |
Web links |
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