Tiarella trifoliata |
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three-leaf foamflower |
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Habit | Herbaceous perennial from slender rhizomes, the flowering stems 2-3.5 dm. tall, glandular-pubescent. |
Leaves | Basal leaves with petioles 2-3 times as long as the blades; leaf blades highly variable, cordate, 1.5-8 cm. long and up to 12 cm broad, trifoliate and the leaflets deeply divided, or trifoliate and the leaflets shallowly lobed, or palmately 3- to 5 lobed; cauline leaves few and reduced. |
Flowers | Inflorescence an elongate, leafless panicle; calyx bell-shaped, irregular, the 5 lobes longer than the tubular section, the upper lobe the largest; petals 5, white, linear, similar to the filaments; stamens 10, the filaments opposite the petals much shorter that the alternate 5. |
Fruits | Ovary superior; carpels 2, unequal, 3-5 mm. and 7-10 mm. long respectively. |
Tiarella trifoliata |
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Flowering time | May-August |
Habitat | Moist woods and stream banks, sea level to mid-elevations in the mountains. |
Distribution | Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Idaho and Montana.
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Origin | Native |
Conservation status | Not of concern |
Subordinate taxa | |
Web links |
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