|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Fabaceae (Leguminosae)||View Description||Dichotomous Key|
|Genus: Trifolium||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Trifolium macraei Hook. & Arn.
Habit: Annual. Stem: decumbent to erect. Leaf: cauline; stipules ovate-acuminate or bristle-tipped; leaflets 1--2 cm, narrowly elliptic to ovate. Inflorescence: heads generally paired, +- sessile or occasionally 1 short-peduncled above (1)2 leaves, 5--15 mm wide, few--many-flowered, ovate or spheric; peduncle 0 or 1; pedicels 0. Flower: calyx 4--7 mm, hairy, lobes >> tube, tapered or bristle-like, plumose; corolla 5--9 mm, purple or 2-colored. Seed: 1. Chromosomes: 2n=16.
Ecology: Disturbed areas, dunes; Elevation: < 600 m. Bioregional Distribution: NCo, NCoRO, CCo, SnFrB, ChI; Distribution Outside California: South America. Flowering Time: Mar--May
eFlora Treatment Author: Michael A. Vincent & Duane Isely
Jepson Online Interchange
Previous taxon: Trifolium longipes subsp. shastense
Next taxon: Trifolium macrocephalum
Citation for this treatment: Michael A. Vincent & Duane Isely 2016. Trifolium macraei, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=47122, accessed on July 30, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on July 30, 2016.