This page is based on the 1993 Jepson Manual. Please see the
Jepson eFlora for up-to-date information about California
vascular plants. |Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL|| previous taxon | Jepson
Interchange (more information) ©Copyright 1993 by the Regents of
the University of California Print edition is available from the
University of California Press |The second edition of The Jepson
Manual (2012) is available from the University of California
Press| |See also the Jepson eFlora, which parallels the Second
Edition| Annual to tree Leaves basal or cauline, alternate to
whorled, simple to compound Inflorescence: 1° inflorescence a
head, each resembling a flower, 1many, generally arrayed in
cymes, generally subtended by ± calyx-like involucre; flowers
1many per head Flowers bisexual, unisexual, or sterile, ± small,
of several types; calyx 0 or modified into pappus of bristles,
scales, or awns, which is generally persistent in fruit; corolla
radial or bilateral (rarely