Eriogonum multiflorum

Bentham

Trans. Linn. Soc. London 17: 413. 1836.

Common names: Many-flowered wild buckwheat
Endemic
Treatment appears in FNA Volume 5. Treatment on page 326.

Herbs, 5–20 × 3–6 dm, reddish. Aerial flowering stems slender or stout, 4–15 dm, floccose to tomentose. Leaves: petiole 0.3–1 cm (rosette), or 0.2–0.5 cm (cauline), tomentose to floccose; blade narrowly lanceolate to narrowly elliptic or oblong to narrowly ovate, 1.5–5(–8) × 0.3–2.2(–2.5) cm, densely tomentose abaxially, tomentose or floccose to glabrate adaxially, sometimes thickened and auriculate-subclasping proximally; margins entire or crisped, rarely revolute. Inflorescences 50–200 × 20–100 cm; bracts triangular, 1–3 mm. Peduncles 0.1–0.4 cm, tomentose to floccose. Involucres turbinate to turbinate-campanulate, 2–2.5 × 1.5–2(–2.5) mm, tomentose to floccose or occasionally glabrous abaxially, tomentose adaxially; teeth 5, 0.3–0.8 mm. Flowers 1.5–2.5 mm; perianth white to reddish brown; tepals: those of outer whorl oblong-cordate, 1.5–2 × 1.5–2 mm, those of inner whorl lanceolate to oblong, 1.5–2.5 × 0.2–0.5 mm; stamens slightly exserted, 1.5–3 mm. Achenes 1.5–2 mm.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaf blades narrowly lanceolate to narrowly elliptic, 2-5(-8) × 0.3-0.9(-1.5) cm, not thickened, attenuate to rarely rounded proximally, not auriculate-subclasping Eriogonum multiflorum var. multiflorum
1 Leaf blades oblong to narrowly ovate, 1.5-4(-4.5) × 1-2.2(-2.5) cm, occasionally thickened, auriculate-subclasping proximally Eriogonum multiflorum var. riograndis