|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: Loasaceae||View Description||Dichotomous Key|
|Genus: Mentzelia||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Mentzelia tridentata (Davidson) H.J. Thomps. & J.E. Roberts
Habit: Annual 5--25 cm. Stem: erect, hairy. Leaf: petioled, 1--9 cm, lanceolate to oblanceolate, wavy to toothed. Inflorescence: bracts lanceolate to widely ovate, sessile, 2--10-toothed, +- green. Flower: sepals 5--13 mm; petals 10--40 mm, widely obovate, +- white to pale-yellow, tip mucronate; stamens 6--15 mm, filaments +- broadened, 2-lobed distally, anther stalk between lobes thin, generally > lobes; style 9--12 mm. Fruit: erect to reflexed, 9--18 mm, 5--8 mm wide, cylindric to barrel-shaped. Seed: 1.5--2.5 mm, +- compressed, widest at middle, beaked, ashy-white. Chromosomes: 2n=20.
Ecology: Creosote-bush scrub; Elevation: 700--1300 m. Bioregional Distribution: c DMoj. Flowering Time: Apr--May
Synonyms: Mentzelia tricuspis A. Gray var. brevicornuta I.M. Johnst.
eFlora Treatment Author: Joshua M. Brokaw, John J. Schenk & Barry Prigge
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Mentzelia tricuspis
Next taxon: Mentzelia veatchiana
Citation for this treatment: Joshua M. Brokaw, John J. Schenk & Barry Prigge 2017. Mentzelia tridentata, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33293, accessed on January 21, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 21, 2017.