Difference between revisions of "Eriogonum subg. Eriogonum"
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name=Eriogonum subg. Eriogonum | name=Eriogonum subg. Eriogonum | ||
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|subfamily=Polygonaceae subfam. Eriogonoideae | |subfamily=Polygonaceae subfam. Eriogonoideae | ||
|genus=Eriogonum | |genus=Eriogonum | ||
Revision as of 21:55, 16 December 2019
Herbs, erect, polycarpic perennials, tomentose or glabrous; taproot woody. Stems erect, tomentose to floccose or glabrous; caudex stems absent; aerial flowering stems erect, slender to stout, solid, not hollow, fistulose, or disarticulating in ringlike segments proximally, arising directly from the root. Leaves usually persistent, basal or cauline, 1 per node or fasciculate; blade tomentose abaxially. Inflorescences terminal, cymose, open; branches mostly dichotomous, not disarticulating into ringlike segments, round and smooth or finely striated or grooved, tomentose; bracts 3(–5), connate basally, scalelike or leaflike. Peduncles absent or erect and stout. Involucres 1 per node, not appressed to the inflorescence branches, turbinate to campanulate; teeth 5, erect, apex acute. Flowers attenuate at base, with stipelike base 0.5–7 mm; perianth cream to light tan or yellow, densely pubescent abaxially, glabrous adaxially; tepals connate proximally 1/4–1/3 their length, monomorphic or dimorphic; stamens exserted; filaments glabrous or densely pilose. Achenes brown, not winged, 3-gonous, glabrous or pubescent. Seeds: embryo straight.
Distribution
United States.
Discussion
Species 2 (2 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Tepals monomorphic; perianths densely white- or silvery-tomentose abaxially; filaments glabrous; Arkansas, Kansas, New Mexico, Oklahoma, and Texas e to Alabama, Florida, Kentucky, and Tennessee | Eriogonum longifolium |
| 1 | Tepals dimorphic; perianths densely tannish- to rusty-lanate abaxially; filaments pilose; se Alabama, Florida, Georgia, and South Carolina | Eriogonum tomentosum |