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|Jepson eFlora: Taxon page
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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus: Dimeresia||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Dimeresia howellii A. Gray
Habit: Annual generally 1--4 cm, tufted, cobwebby at base, +- glandular above. Leaf: basal and/or cauline, opposite, 1--3 cm, short-petioled, oblanceolate to ovate, entire, clustered around heads. Inflorescence: heads discoid, generally in sessile clusters; involucre 4--6 mm, narrowly bell-shaped; phyllaries 2--3, each subtending a flower, +- fused at base, obovate, tip rounded, back convex; receptacle epaleate. Flower: 2--3; corolla 4--6 mm, tube and throat +- purple, lobes spreading, white to purple; anther base sagittate, tip +- triangular; style branches +- flat, +- papillate, tip slightly expanded, rounded. Fruit: +- 3 mm, cylindric, ribbed, glabrous; pappus bristles +- 20, 3--5 mm, plumose, fused at base. Chromosomes: 2n=14.
Ecology: Dry volcanic soils; Elevation: 1500--2400 m. Bioregional Distribution: MP; Distribution Outside California: to southern Oregon, southwestern Idaho, northwestern Nevada. Flowering Time: May--Aug
eFlora Treatment Author: David J. Keil
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Dimeresia
Next taxon: Dimorphotheca
Citation for this treatment: David J. Keil 2016. Dimeresia howellii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=2453, accessed on May 01, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 01, 2016.