Eriocaulon mutatum var. angustisepalum (H.E.Hess) S.M.Phillips

Dome-shaped annuals 15-70 mm tall. Leaves few, short, linear-acuminate. Capitula many, globose, c. 2 mm in diam., black, shiny, on peduncles 15-70 mm long; involucral bracts obtuse, margin erose; floral bracts slightly smaller; receptacle conical, glabrous. Female flowers with 2 half-folded, convex, narrow, aristate sepals; petals 2, linear, erect, obtuse; ovary 2-locular, sessile; style with 2 stigmatic branches. Male flowers with 2 fused sepals; petals 0; stamens 4, black. Capsule bilobed with 2 globose locules; seed minutely reticulate and muricate.