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FNA | Family List | FNA Vol. 5 | Polygonaceae | Eriogonum

128a. Eriogonum jamesii Bentham var. jamesii

James's antelope sage

Herbs, spreading, loose mats, 3-8 dm wide. Aerial flowering stems tomentose to floccose. Leaf blades 1-3 × 0.5-1 cm, densely whitish- to grayish-tomentose abaxially, less so to thinly tomentose and greenish adaxially, margins plane. Inflorescences compound-umbellate, branched 2-5 times; bracts usually semileaflike, those of proximal node 0.5-2 × 0.3-1 cm. Involucres 4-7 × 2-5 mm. Flowers 4-8 mm. 2n = 40.

Flowering Jun-Oct. Sandy to gravelly or infrequently rocky flats and slopes, mixed grassland, saltbush, blackbrush, creosote bush, mesquite, and sagebrush communities, oak, pinyon and/or juniper, and montane conifer woodlands; (1000-)1300-2900(-3100) m; Ariz., Colo., N.Mex., Okla., Tex.

Variety jamesii is widespread, and although generally scattered and infrequent, can be locally common in places. It occurs from southern Colorado south into eastern Arizona, New Mexico, western Oklahoma, and northern and western Texas. It merges with var. undulatum in southeastern Arizona, southern New Mexico, and especially western Texas.


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