Trillium foetidissimum |
Trillium |
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trillium, wakerobin |
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Habit | Herbs perennial. | |
Roots | adventitious, contractile, ringed. |
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Rhizomes | short; thick, tapered to a point. |
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Leaves | 3; in a whorl subtending flower, sessile or petiolate; ovate to cordate; major veins 3–5; venation palmate-reticulate. |
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Scapes | 1-several; erect; straight; round, usually aerial (below ground in T. petiolatum). |
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Inflorescences | terminal, 1 per stem. |
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Flowers | bisexual; sepals 3; ovate or obovate to elliptical, green (sometimes with maroon markings); free, alternating with leaves; leaf-like, persistent; petals 3; ovate to linear, white, pink, yellow; maroon, or purple; free, spreading or recurved, sometimes clawed, withering with age; stamens 6, alternating in 2 whorls; erect, recurved or divergent; filaments wider at base; anthers white or purple; ovary superior; stigmas 3, linear to awl-shaped, spreading, twisted, or erect, usually persistent. |
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Fruits | berry-like capsules, 0.5–3 cm long; fleshy. |
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Seeds | many; ovoid to elliptical, 2–4 mm, with a large white or yellowish oil body (elaiosome); ant dispersed. |
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2n | =10. |
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Trillium foetidissimum |
Trillium |
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Distribution | ||
Discussion | North America, Asia. 43 species; 5 species in Oregon. |
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Source | Flora of Oregon, volume 1, page 314 Tamra Prior |
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Sibling taxa | ||
Subordinate taxa | ||
Web links |