Chaetadelpha
Family: Asteraceae
Chaetadelpha image
Dean Wm. Taylor  

Perennials, 15-40 cm; rhizomes stout, branching. Stems 2-4, ascending to suberect, freely branched, glabrous. Leaves basal and cauline (basal withered at flowering); sessile; blades linear to linear-lanceolate, margins entire; distal reduced to scales. Heads borne singly (terminal at ends of stems and branches). Peduncles not inflated, not bracteate. Calyculi of 4-5, minute bractlets. Involucres cylindric, 3-4 mm diam. Phyllaries 5 in 1 series, linear, equal, margins hyaline, apices acute. Receptacles flat, glabrous, epaleate. Florets 5; corollas pale lavender to white. Cypselae light tan, columnar, 5 ridge-angled, faces smooth, without grooves or striations, glabrous; pappi persistent (borne on minute, raised pedestals 0.1 mm), of 5, barbellate awns plus 35-50+, barbellulate bristles in 1-2 series, all ± connate basally (bristles ± in groups alternating with the awns). . = 9.

Image of Chaetadelpha wheeleri
Map not
Available