Ivesia gordonii |
Ivesia cryptocaulis |
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gordon's ivesia, alpine mousetail |
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Habit | Herbaceous, glandular-puberulent perennial from a taproot, the flowering stems 5-15 cm. tall. | |
Leaves | Basal leaves numerous, the blades 2-7 cm. long, pinnate, the leaflets over 20, deeply divided into 3-5 obovate segments 3-8 mm. long; cauline leaf 1, greatly reduced, the stipule several-lobed. |
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Flowers | Inflorescence a congested, terminal cluster; calyx conic, yellowish, the 5 lobes deltoid-lanceolate, 3-4 mm. long, erect; petals 5, yellow, obovate to spatulate, shorter than the sepals; stamens 5, pistils 2-4. |
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Fruits | Achenes ovoid-flattened, 2 mm. long, smooth. |
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Ivesia gordonii |
Ivesia cryptocaulis |
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Flowering time | June-August | |
Habitat | Rocky slopes, grassland, sagebrush, forest openings, and subalpine to alpines ridges. | |
Distribution | Occurring chiefly east of the Cascades crest from central Washington south; central Washington to California, east to Montana, Wyoming, and Colorado.
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Origin | Native | |
Conservation status | Not of concern | |
Sibling taxa | ||
Subordinate taxa | ||
Web links |