Trillium rivale |
Trillium kurabayashii |
|
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brook trillium, brook wakerobin |
giant purple wakerobin |
|
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. |
ovate to broadly ovate; (9)11–18(25) × (8)12–17 cm, bright green, usually with prominent light and dark green spots, occasionally lightly mottled with mottling fading with age; somewhat glossy; apex acuminate, sessile. |
Scapes | 1–2, 4–20 cm, glabrous. |
2, 25–55 cm, glabrous. |
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. |
sessile; sepals oblong- to lance-linear, 3.5–6(7.5) × 1–1.5 cm, green with purple streaks; margins entire; apex acute to round-acute; petals maroon, spreading-erect to erect, linear to oblanceolate, 5.5–11 × 2–3.5 cm; maroon; base cuneate; apex round-acute; margins entire; stamens erect; (11)15–26 mm; filaments 2–4 mm, dark purple; anthers 13–24 mm; dark maroon; ovary ovoid, dark purple, rounded or with 6 angles; stigmas erect, 6–8 mm. |
Fruits | globose; greenish white. |
ovoid to ellipsoid; dark reddish purple. |
Trillium rivale |
Trillium kurabayashii |
|
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. |
Along streams, meadows, forests, found often with oak trees. Flowering Mar–May. 0–1500m. Est, Sisk. CA. Native. |
Source | Flora of Oregon, volume 1, page 316 Tamra Prior |
Flora of Oregon, volume 1, page 315 Tamra Prior |
Sibling taxa | ||
Synonyms | Pseudotrillium rivale | Trillium angustipetalum, Trillium chloropetalum |
Web links |