Plants herbs, spreading, not scapose, 2–5 (6) dm tall, 2–5 dm across, glabrous, green; stems spreading, without persistent leaf bases, up to 1/5 height of plant, the caudex stems spreading, glabrous, the aerial flowering stems erect, slender, solid, not fistulose, 1.2–3 dm long, glabrous, tomentose among leaves; leaves basal or sheathing up stem less than 2 cm, 1 per node, the petioles (0.1) 3–7 (10) cm long, tomentose to floccose or glabrous, the blades linear or oblong to oblanceolate or elliptic, 2–8 (10) cm long, 0.2–2.5 (3) cm wide, thinly to densely white-tomentose abaxially, glabrous and green adaxially, the margins plane or slightly revolute; inflorescences cymose, open, 10–30 cm long, 10–25 cm wide, the branches dichotomous, glabrous, the bracts 3, scalelike, linear, 2–5 (7) mm long; peduncles absent; involucres 1 per node, turbinate, 2–3 (3.5) mm long, 1–1.5 (2) mm wide, glabrous, the teeth 5, erect, 0.4–0.5 mm long; flowers 3–3.5 mm long, the perianth yellow or white, glabrous, the hypanthium up to 1⁄2 length of perianth, the tepals monomorphic, oblong to obovate, the stamens slightly exserted, 3–3.5 (4) mm long, the filaments sparsely pilose proximally; achenes light brown to brown, 2.5–3 mm long, glabrous except for slightly papillate beaks. Continue reading
Author Archives: xochipelli2012
Eriogonum hookeri
Plants herbs, erect, annual, 1–6 dm tall, glabrous, glaucous, grayish; stems with caudex absent, the aerial flowering stems erect, solid, not fistulose, 0.1–0.4 dm long, glabrous, glaucous; leaves basal, the petioles 1–5 cm long, tomentose, the blades cordate to subreniforme, (1) 2–5 cm long, 2–6 cm wide, densely white felty- tomentose abaxially, tomentose and grayish adaxially, the margins occasionally wavy; inflorescences cymose, open to diffuse, spreading to subglobose or flat-topped to umbrella-shaped, 5–35 cm long, 5–50 cm wide, the branches glabrous, glaucous, the bracts 3, scalelike, 1–3 mm long, 0.5–1.5 mm wide; peduncles absent; involucres deflexed, broadly campanulate to hemispheric, 1–2 mm long, 1.5–3 (3.5) mm wide, glabrous, the teeth 5, erect, 0.5–0.7 mm long; flowers 1.5–2 mm long, the perianth yellow to reddish-yellow, glabrous, the tepals dimorphic, those of outer whorl orbiculate, those of inner whorl narrowly ovate, the stamens mostly included, 1.3–1.5 mm long, the filaments glabrous; achenes light brown, trigonous, 2–2.5 mm long, glabrous. 2n = 40. Continue reading
Eriogonum heermannii var. floccosum
Plants shrubs, rounded, usually sparsely branched, 3–6 dm tall, 4–8 dm across; leaf blades oblanceolate, (0.5) 0.8–1.5 cm long, 0.2–0.5 cm wide, tomentose to floccose abaxially; inflorescences rather dense 5–12 cm long, 5–20 cm wide, the branches rather diffuse, with racemosely arranged involucres at tips, slender, round, smooth, floccose to thinly tomentose, not spinose; involucres campanulate, 1–1.5 (2) mm long, 1–1.5 mm wide; flowers 2–3 mm long, the perianth yellowish-white, the tepals glabrous.
Eriogonum heermannii var. clokeyi
Plants shrubs, spreading to erect, sparsely branched, 4–8 dm tall, 6–10 dm across; leaf blades oblanceolate to spatulate, 0.5–1.5 cm long, 0.2–0.6 cm wide, mostly glabrous; inflorescences (5) 10–20 cm long, 5–8 cm wide, the branches open, with numerous racemosely arranged involucres, slender and whiplike, round, smooth, glabrous, not spinose; involucres campanulate, 1–1.5 mm long, 1.5–3 mm wide; flowers 2.5–3 mm long, the perianth white, the tepals glabrous.
Eriogonum trichopes
Plants herbs, spreading to somewhat erect, annual, 1–4.5 (6) dm tall, glabrous and often glaucous, yellow- green; stems with caudex absent, the aerial flowering stems erect, occasionally hollow and fistulose, 0.5–2 (3) dm long, glabrous, minutely hirsute or short-hispid proximally; leaves basal, the petioles 1–6 cm long, hirsute, the blades broadly oblong, (0.5) 1–2.5 (4) cm long, (0.5) 1–2 (3) cm wide, short-hirsute on both surfaces and greenish, the margins wavy; inflorescences cymose, open to dense, usually spreading, 5–30 cm long, 5–50 cm wide, the branches usually not fistulose, glabrous, the bracts 3, scalelike, 1–4 mm long, 1–2 mm wide; peduncles mostly erect, straight, capillary, 0.5–1.5 cm long, glabrous; involucres turbinate, 0.7–1 mm long, 0.6–0.9 mm wide, glabrous, the teeth 4 (5), erect, 0.3–0.4 mm long; flowers 1–2 mm long, the perianth yellow to greenish yellow with greenish to reddish midribs, densely hirsute with coarse curved hairs, the tepals monomorphic, narrowly ovate, the stamens exserted, 0.9–1.5 mm long, the filaments sparsely pubescent proximally; achenes light brown to brown, lenticular to trigonous, 1–1.5 mm long, glabrous.
Eriogonum umbellatum var. subaridum
Plants subshrubs or shrubs, spreading to erect, sometimes round, 2–7 dm tall, 3–9 (12) dm across; aerial flowering stems erect, (0.5) 1–3 dm long, floccose or glabrous, without one or more foliaceous bracts about midlength; leaves in rather loose rosettes, the blades elliptic, 1–3 cm long, 0.5–2 cm wide, thinly floccose on both surfaces or glabrous and green adaxially (glabrous on both surfaces in southern Utah, rarely tomentose abaxially in southeastern Utah), the margins plane; inflorescences compound-umbellate, branched 2–5 times, the branches floccose or glabrous, without a whorl of bracts about midlength; involucral tubes 2–3 (3.5) mm long, the lobes 1–3 mm long; flowers 3–7 mm long, the perianth bright yellow. Continue reading
Eriogonum mensicola
Plants herbs, erect, (1) 1.5–3 dm tall, 1–2 dm across, tomentose, grayish; stems slightly spreading to erect, without persistent leaf bases, up to 1/5 height of plant, the caudex stems absent, the aerial flowering stems erect, slender, solid, not fistulose, 0.5–1 (1.3) dm long, tomentose; leaves basal, 1 per node, the petioles 1–2 cm long, tomentose, the blades round, (0.3) 0.5–1.5 cm long, (0.3) 1–1.5 cm wide, tomentose abaxially, thinly floccose and green adaxially, or white-tomentose on both surfaces, the margins plane; inflorescences cymose with involucres racemosely disposed at tips, 10–15 (20) cm long, 0.6–3 (5) cm wide, the branches dichotomous, tomentose, the bracts 3, scalelike, linear to narrowly triangular and 1–3 mm long, or foliaceous, ovate to orbiculate and 5–12 mm long and wide; peduncles absent; involucres 1 per node, campanulate, 2–3 (4) mm long, 2–4 mm wide, tomentose, the teeth 5, erect, 0.4–0.8 mm long; flowers 3–4 mm long, perianth white to whitish brown, glabrous, the hypanthium 1⁄4 length of perianth, the tepals monomorphic, oblanceolate, the stamens exserted, 3–6 mm long, the filaments pilose proximally; achenes light brown, 2.5–3 mm long, glabrous. Continue reading
Eriogonum heermannii var. humilius
Plants shrubs or subshrubs, spreading to rounded, usually sparsely branched, 3–7 dm tall, 5–12 (15) dm across; leaf blades oblanceolate to spatulate, 0.8–1.5 cm long, 0.4–0.8 cm wide, floccose or glabrous abaxially; inflorescences 3–15 (23) cm long, 5–20 cm wide, the branches usually diffuse with dichotomously arranged involucres, slender, round, smooth, glabrous, not spinose; involucres campanulate, 1–1.5 mm long, 1.5–3 mm wide; flowers 2.5–3 mm long, the perianth white, the tepals glabrous or rarely sparsely glandular (at least those of the inner whorl). Continue reading
Eriogonum hoffmannii var. robustius
These pictures were taken on September 1st, 2014. 36°24’50” N ; 117°10’52” W. Emigrant Canyon Road. 1330 meters of altitude. Continue reading
Eriogonum hoffmannii var. hoffmannii
Plants herbs, spreading to erect, annual, 0.5–5 dm tall, glabrous, greenish to grayish; stems with caudex absent, the aerial flowering stems erect, solid, not fistulose, 0.4–4 dm long, glabrous; leaves basal or sometimes sheathing up stems 1–3 (5) cm, the petioles 1–10 cm long, tomentose, the blades suborbiculate to subcordate, 1–5 cm long, 2–8 cm wide, densely white-tomentose abaxially, floccose or glabrous and green adaxially; leaf margins entire, blade 1–4 cm long, 2–4 cm wide; petioles 1–5 cm long; plants 0.5–5 dm; inflorescences cymose, open, spreading to rather erect and somewhat strict, 5–70 cm long, 10–60 cm wide, the branches glabrous, the bracts 3, scalelike, 1–1.5 mm long, 0.5–1 mm wide; peduncles absent or erect, straight, stout, 0.01–0.1 cm long, glabrous; involucres turbinate, 1–2 mm long, 1–1.8 mm wide, glabrous, the teeth 5, erect, 0.4–1.2 mm long; flowers 1.5–1.8 mm long, the perianth white with greenish or reddish midribs, becoming reddish, glabrous, the tepals monomorphic, lanceolate to spatulate or ovate, the stamens mostly included, 1–1.5 mm long, the filaments glabrous; achenes brown, trigonous, 2 mm long, glabrous. 2n = 40.
Eriogoneae 
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