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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 dispersa S. Watson
Habit: Annual 7--48 cm. Stem: erect, hairy. Leaf: < 10 cm, lower entire to toothed (lobed), upper entire to toothed. Inflorescence: bracts ovate to round, entire to lobed, green. Flower: sepals 1--3.5 mm; petals 2--6(8) mm, ovate to obovate, yellow throughout (base orange); stamens < 4.5 mm; style 1--3.5(5) mm. Fruit: erect to curved < 30°, 7--25 mm, 1--2.5 mm wide, narrowly cylindric. Seed: 0.5--1.5 mm, 0.5--1 mm wide, +- prism-shaped, ×-section triangular, longitudinal edges grooved, tan, dark-mottled or not; seed coat cells minute. Chromosomes: 2n=18,36,72.
Ecology: Loamy to sandy or rocky slopes, roadsides; Elevation: 900--3100 m. Bioregional Distribution: CA-FP, GB; Distribution Outside California: to British Columbia, north-central United States, New Mexico. Flowering Time: May--Aug Note: Intergrades with Mentzelia affinis.
Synonyms: Mentzelia pinetorum A. Heller; Mentzelia dispersa var. compacta (A. Nelson) J.F. Macbr.; Mentzelia dispersa var. dispersa; Mentzelia dispersa var. latifolia (Rydb.) J.F. Macbr.; Mentzelia dispersa var. obtusa Jeps.
eFlora Treatment Author: Joshua M. Brokaw, John J. Schenk & Barry Prigge
Jepson Online Interchange
Previous taxon: Mentzelia desertorum
Next taxon: Mentzelia eremophila
Citation for this treatment: Joshua M. Brokaw, John J. Schenk & Barry Prigge 2017. Mentzelia dispersa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33236, accessed on January 24, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 24, 2017.