Chorizanthe sect. Fragile
disarticulating at each node.
blades oblanceolate to narrowly elliptic or spatulate.
bracts awned;
involucres cylindric, slightly ventricose basally, 3-angled, 6-ribbed, 6-toothed, without membranous or scarious margins;
awns equal.
1;
perianth greenish white to white or pale yellowish white, glabrous;
stamens 3, adnate at top of perianth tube.
dark brown, lenticular.
Chorizanthe sect. Fragile
Species 2 (1 in the flora).
Chorizanthe brevicornu of western North America, and its counterpart in western South America, C. commissuralis J. Rémy, are the most widely distributed members of the genus on their respective continents. The flowering stems and branches easily break apart, often with involucres still firmly attached. Even in this disarticulated condition, young achenes will continue to live and mature. No doubt this is a significant factor in their successful distribution.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
