Allium geyeri |
Allium macrum |
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Geyer's onion |
rock onion |
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Habit | Scapose perennial, usually from a cluster of ovoid bulbs enclosed in fibrous, outer coats with a coarse network pattern; scapes 1-5 dm. tall, nearly terete. | Scapose perennials from ovoid bulbs, usually solitary, outer coats brownish, without a network pattern. |
Leaves | Leaves usually 3 or more per scape, concave-convex in cross section, 1-5 mm. broad, usually shorter than the scape, green, becoming brown and persisting. |
Leaves 2, much longer than the scape, concave-convex or flattened, narrow, tardily deciduous; scape nearly terete, somewhat ridged, up to 1 dm. tall. |
Flowers | Umbels 10- to 25-flowered, the pedicels equal in length, nearly twice the length of the perianth, becoming stiffly spreading in fruit; tepals 6, 6-8 mm. long, ovate to lanceolate, pink to rarely white; stamens 6, shorter than the tepals; ovary inconspicuously crested with 6 low, rounded knobs. |
Umbel several- to many-flowered, pedicels 1-3 times as long as the tepals; tepals 5-7 mm. long, lanceolate, pointed, white or pinkish with greenish or reddish midribs; stamens 6, slightly exerted; anthers dark, purplish-brown or reddish. |
Fruits | Capsule 3-celled. |
Capsule 3-celled and 3-lobed, without a crest. |
Allium geyeri |
Allium macrum |
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Flowering time | May-June | April-May |
Habitat | Low meadows and along streams. | Lithosol and barren, gravelly soils in the shrub-steppe. |
Distribution | Occurring east of the Cascades crest in Washington; southern Vancouver Island to Arizona, east to the Rocky Mountains and northern Great Plains.
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Occurring east of the Cascades crest in Washington; central Washington to southern Oregon and southwestern Idaho.
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Origin | Native | Native |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
Subordinate taxa | ||
Web links |
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