|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
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|Family: Loasaceae||View Description||Dichotomous Key|
|Genus: Mentzelia||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Mentzelia pectinata Kellogg
Habit: Annual 8--54 cm. Stem: erect to decumbent, hairy. Leaf: 2--12 cm; generally toothed to lobed. Inflorescence: bracts lanceolate to ovate, generally toothed to lobed, green. Flower: sepals 3--13 mm; petals 8--22 mm, obovate, orange to yellow, base red to orange; stamens 4--11 mm; style 5--13 mm. Fruit: erect to curved < 90°, 12--35 mm, 2--4 mm wide, obconic. Seed: 1--2 mm, irregularly angular above mid-fruit, sides concave, ×-section occasionally triangular with grooves along longitudinal edges below mid-fruit, tan, dark-mottled or not; seed coat cells generally pointed or domed, in age > 1/2 tall as wide on seed surface edges. Chromosomes: 2n=18.
Ecology: Slopes of sandy to gray-white, calcium-rich soils, grassland to oak woodland; Elevation: < 1400 m. Bioregional Distribution: s SNF, s SnJV, s SCoRO, n WTR. Flowering Time: Mar--May
eFlora Treatment Author: Joshua M. Brokaw, John J. Schenk & Barry Prigge
Jepson Online Interchange
Previous taxon: Mentzelia oreophila
Next taxon: Mentzelia polita
Citation for this treatment: Joshua M. Brokaw, John J. Schenk & Barry Prigge 2016. Mentzelia pectinata, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33274, accessed on October 28, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on October 28, 2016.