Eriogonum thompsoniae S. Wats.

Herbs, spreading, not scapose, 2-5(-6) × 2-5 dm, glabrous, green. Stems spreading, without persistent leaf bases, up to 5 height of plant; caudex stems spreading, glabrous; aerial flowering stems erect, slender, solid, not fistulose, 1.2-3 dm, glabrous, tomentose among leaves. Leaves basal or sheathing up stem less than 2 cm, 1 per node; petiole (0.1-)3-7(-10) cm, tomentose to floccose or glabrous; blade linear or oblong to oblanceolate or elliptic, 2-8(-10) × 0.2-2.5(-3) cm, thinly to densely white-tomentose abaxially, glabrous and green adaxially, margins plane or slightly revolute. Inflorescences cymose, open, 10-30 × 10-25 cm; branches dichotomous, glabrous; bracts 3, scalelike, linear, 2-5(-7) mm. Peduncles absent. Involucres 1 per node, turbinate, 2-3(-3.5) × 1-1.5(-2) mm, glabrous; teeth 5, erect, 0.4-0.5 mm. Flowers 3-3.5 mm; perianth yellow or white, glabrous; tepals connate only at base, monomorphic, oblong to obovate; stamens slightly exserted, 3-3.5(-4) mm; filaments sparsely pilose proximally. Achenes light brown to brown, 2.5-3 mm, glabrous except for slightly papillate beak.

Eriogonum corymbosum Bentham var. thompsoniae (S. Watson) S. L. Welsh

Eriogonum thompsoniae là một loài thực vật có hoa trong họ Rau răm. Loài này được S.Watson mô tả khoa học đầu tiên năm 1873.