Eriogonum microthecum var. schoolcraftii

This variety of Eriogonum microthecum is pretty rare. The pictures were taken, on August 29 th 2014, in the low desert hills west of Doyle, Lassen County, California. 40°1’28” N ; 120°9’28” W. Eriogonum microthecum var. schoolcraftii is also present on Seven Lake Mountain, Washoe County, Nevada.

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Eriogonum microthecum var. schoolcraftii west of Doyle in California

Plants shrubs, 3–8 dm tall, (4) 5–10 (12) dm across, floccose; stems lacking a caudex, the aerial flowering stems 0.5–1.5 dm long, floccose; leaf blades 1.5–3.5 cm long, 0.5–1.2 cm wide, densely reddish-brown tomentose abaxially, floccose adaxially, the margins not revolute; inflorescences 1–8 cm long, the branches floccose; involucres 2.5–4 mm long, floccose; flowers 2.5–3 mm long, the perianth yellow; achenes 2.5–3 mm long.

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Inflorescences 1–8 cm long, the branches floccose; involucres 2.5–4 mm long, floccose; flowers 2.5–3 mm long, the perianth yellow.

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Stems lacking a caudex, the aerial flowering stems 0.5–1.5 dm long, floccose; leaf blades 1.5–3.5 cm long, 0.5–1.2 cm wide, densely reddish-brown tomentose abaxially, floccose adaxially, the margins not revolute.

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In the Doyle population, there was a small number of plants with flowers pale yellow or almost white among the yellow ones. Jim answered back: «The variation in flower color in var. schoolcraftii is not surprising, but I have not seen it myself».  

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Flowering July to September. Sandy to rocky soil, sagebrush communities, pinyon-juniper woodlands; 1400–2200 m.

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