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|Jepson eFlora: Taxon page
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|Family: Loasaceae||View Description||Dichotomous Key|
|Genus: Mentzelia||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Mentzelia torreyi A. Gray
Habit: Perennial herb 10--20 cm. Stem: many from thick caudex, erect to decumbent, hairy. Leaf: 2--4 cm, generally deeply pinnate-lobed, 0--7 linear lobes, margins rolled under. Inflorescence: bracts linear, base occasionally 2-lobed, margins rolled under, green. Flower: sepals 3--6 mm; petals 9--15 mm, oblanceolate, orange to pale yellow, abaxially puberulent; stamens 7--10 mm; style 8--12 mm. Fruit: +- erect, 4--8 mm, 3--6 mm wide, urn-shaped, gradually narrowing. Seed: 2--2.5 mm, +- fusiform, +- spiral-3-ribbed, acute distally, truncate proximally. Chromosomes: 2n=28.
Ecology: Sandy to alkaline fine-textured, slopes, scrub, pinyon woodland; Elevation: 900--2100 m. Bioregional Distribution: SNE; Distribution Outside California: to Oregon, Idaho. Flowering Time: Jun--Aug
eFlora Treatment Author: Joshua M. Brokaw, John J. Schenk & Barry Prigge
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Mentzelia reflexa
Next taxon: Mentzelia tricuspis
Citation for this treatment: Joshua M. Brokaw, John J. Schenk & Barry Prigge 2016. Mentzelia torreyi, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33291, accessed on February 13, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 13, 2016.