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|Family: Apiaceae (Umbelliferae)||View Description||Dichotomous Key|
|Genus: Apiastrum||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Apiastrum angustifolium Nutt.
Habit: Annual, 5--50 cm, taprooted. Stem: many-branched throughout. Leaf: mostly cauline, generally opposite; petiole 2--4 cm; blade 1--5 cm, round, finely ternately dissected, segments 5--25 mm, linear to oblong. Inflorescence: umbels compound, peduncled or not, from axils or opposite distal leaves; bracts, bractlets 0; rays 2--3, pedicels few, unequal, spreading. Flower: calyx lobes 0; petals wide, white, tip acute, not incurved; ovary tip projection flat to +- conic. Fruit: 1--1.5 mm, elliptic-cordate, compressed side-to-side, papillate-roughened, glabrous in age; ribs thread-like; oil tube 1 per rib-interval; fruit axis divided to base. Seed: face concave. Chromosomes: 2n=22.
Ecology: Chaparral, coastal scrub; Elevation: < 1500 m. Bioregional Distribution: CA-FP; Distribution Outside California: Baja California. Flowering Time: Mar--Apr
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax
Jepson Online Interchange
Previous taxon: Apiastrum
Next taxon: Apium
Citation for this treatment: Lincoln Constance & Margriet Wetherwax 2016. Apiastrum angustifolium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=13619, accessed on July 26, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on July 26, 2016.