Cheilanthes gracillima
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Family: Pteridaceae (Brake family) |
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Photo taken in Icicle Canyon, in cracks and thin soil on granite rocks, open, moist in spring then drying |
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Sori: sori borne on vein ends just within the margins of the pinnules, sporangia on young leaves often entirely obscured by scales and recurved margin |
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Leaves: blade 4 to 18 cm long, 1 to 2 cm wide; pinnae generally 9 to 20 offset pairs, segments rounded to oblong, ultimate pinnules 1 to 3 mm long; scales linear-lanceolate, ciliate at base; lower surface concave, with dense, pale, deeply dissected, long-ciliate scales, upper surface with similar scales or glabrous Plant: rhizome short creeping; leaves crowded |
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Habitat: cliffs and crevices often on igneous rock; low mountains to near timberline |
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Distribution of species: British Columbia to Montana, south to California Distribution of genus: more than 150 species: mostly in the Americas
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