Eriogonum wrightii |
Eriogonum wrightii var. olanchense |
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bastard-sage, bastard-sage buckwheat, Wright's buckwheat, Wright's wild buckwheat |
Olancha Peak bastard-sage, Olancha Peak buckwheat |
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Habit | Shrubs, subshrubs, or herbs, rarely scapose, (1–)1.5–10 × 1–15(–18) dm or, if matted, 0.1–2.5(–3) × 0.5–3(–5) dm, , lanate to thinly tomentose, or glabrous, grayish to greenish or reddish. | Herbs, compactly matted, 0.1–0.3(–0.6) × 0.5–3 dm, mostly thinly tomentose. | ||||||||||||||||||||
Stems | spreading to erect, with or without persistent leaf bases, up to 1/2 or more height of plant; caudex stems absent or spreading, occasionally matted; aerial flowering stems erect to spreading, stout to slender, solid, not fistulose, (0.1–)0.5–4(–6) dm, tomentose, floccose, or glabrous. |
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Leaves | basal and fasciculate in terminal tufts, or cauline and fasciculate, occasionally 1 per node; petiole 0.02–0.5(–1) cm, tomentose to floccose; blade oblanceolate to broadly elliptic, 0.1–3 × 0.1–1 cm, tomentose to floccose, sometimes subglabrous or glabrous and green adaxially, margins plane, sometimes revolute. |
blade elliptic, 0.1–0.25 × 0.06–0.12 cm. |
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Inflorescences | virgate or cymose with involucres disposed at tips racemosely arranged involucres, rarely capitate, (1–)5–20 × (1–)10–40 cm; branches dichotomous, tomentose, floccose, or glabrous; bracts 3, triangular, scalelike, 0.5–3.5 mm. |
capitate or nearly so; branches absent or slender. |
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Peduncles | absent. |
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Involucres | 1 per node, turbinate to narrowly campanulate, (0.7–)1–4 × 1–2.5 mm, tomentose, floccose, or glabrous; teeth 5, erect, 0.3–1 mm. |
(0.8–)1–1.7(–2) mm. |
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Flowers | 1–4 mm; perianth white to pink or rose, glabrous; tepals connate proximal 1/4, monomorphic, obovate; stamens exserted, 1.5–4 mm; filaments glabrous or sparsely pilose proximally. |
(1.5–)2–2.5 mm; perianth white to pink. |
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Achenes | light brown to brown, (1–)1.5–3 mm, glabrous. |
1.5–2 mm. |
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Eriogonum wrightii |
Eriogonum wrightii var. olanchense |
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Phenology | Flowering Jul–Aug. | |||||||||||||||||||||
Habitat | Gravelly to rocky granitic talus slopes | |||||||||||||||||||||
Elevation | 3500-3600 m (11500-11800 ft) | |||||||||||||||||||||
Distribution |
AZ; CA; NM; NV; TX; UT; including nw Mexico
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CA |
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Discussion | Varieties 9 (6 in the flora). Eriogonum wrightii is subdivided into several varieties most of which are distinct, although a few have rather indistinct boundaries. Some of the variation has yet to be fully resolved, especially in the var. nodosum complex where, at least in Mexico, one additional expression remains to be named. A clear distinction between var. subscaposum and E. kennedyi is not possible in southern California (see discussion below). Nearly all of the varieties of E. wrightii are in cultivation, although the most elegant (var. olanchense) has yet to be so honored. Few ethnobotanical uses of bastard-sage are reported in the literature. L. C. Wyman and S. K. Harris (1951) noted that the Kayenta Navajo use it (var. wrightii) as an emetic, while M. L. Zigmond (1981) stated that the Kawaiisu used the pounded seeds (probably of var. subscaposum) in a beverage or as a dry meal. Members of the species are food plants for the rare Rita dotted-blue butterfly (Euphilotes rita), the Pacific dotted-blue (E. enoptes), the veined blue (Plebeius neurona), and the Mormon metalmark (Apodemia mormo mormo). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety olanchense is known only from Olancha Peak, Tulare County. It is worthy of cultivation as a rock-garden plant. In Baja California, var. oresbium Reveal is similar; that taxon is restricted to the Sierra Juárez and Sierra San Pedro Martír, but already has made its appearance as a cultivated rock-garden plant. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 5, p. 289. | FNA vol. 5, p. 292. | ||||||||||||||||||||
Parent taxa | Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla | Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla > Eriogonum wrightii | ||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||
Synonyms | E. trachygonum subsp. wrightii | E. kennedyi var. olanchense | ||||||||||||||||||||
Name authority | Torrey ex Bentham: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 14: 15. (1856) | (J. T. Howell) Reveal: in P. A. Munz, Suppl. Calif. Fl., 63. (1968) | ||||||||||||||||||||
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