English: Palmer's grapplinghook.
Genus: 1 species.
Region: California.
Habitat: chaparral and coastal scrub plant communities.
BotanyAnnual herb; small, up to 30 cm tall.
Stems: generally erect.
Leaves: occasional; small, pointed.
Flowers: axillary, at the tips of the stems; spiny; white; with hooked bristles; blooming form March to May.
Fruit: nutlet; 1 to 4 mm wide.