|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|Family: Fabaceae (Leguminosae)||View Description||Dichotomous Key|
|Genus: Trifolium||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Trifolium obtusiflorum Hook.
Habit: Annual, generally robust, glandular-hairy, generally sticky. Stem: erect. Leaf: cauline; stipules deeply cut; leaflets 2--4 cm, +- narrowly elliptic, sharply serrate, longer teeth +- 1 mm. Inflorescence: head-like, 1.5--3 cm wide; involucre cut < 1/2 to base. Flower: calyx 9--11 mm, glandular-hairy or bumpy (occasionally in age glabrous), tube slitting between upper lobes, lobes +- <= tube, generally entire, bristle-tipped; corolla 14--18 mm, pale lavender to dull purple, tips white. Seed: 1--2. Chromosomes: 2n=16.
Ecology: Moist disturbed areas, gravel bars, marshes; Elevation: 30--1800 m. Bioregional Distribution: NW, n&c SN, CW, SCo, SnGb, PR; Distribution Outside California: southwestern Oregon. Flowering Time: Apr--Jul
eFlora Treatment Author: Michael A. Vincent & Duane Isely
Jepson Online Interchange
Previous taxon: Trifolium monanthum subsp. tenerum
Next taxon: Trifolium oliganthum
Citation for this treatment: Michael A. Vincent & Duane Isely 2017. Trifolium obtusiflorum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=47144, accessed on April 26, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on April 26, 2017.