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|Jepson eFlora: Taxon page
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|Family: Boraginaceae||View Description||Dichotomous Key|
|Genus: Phacelia||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Phacelia peirsoniana J.T. Howell
Habit: Annual 4--30 cm, aromatic. Stem: erect, simple to branched distal to base, sparsely short-stiff-hairy, minutely glandular. Leaf: 10--60 mm; blade generally < petiole, +- round, crenate to irregularly toothed. Flower: calyx lobes 3--4 mm, 6--8 mm in fruit, some 1--2 mm wide, oblong, short-stiff-hairy; corolla 4--6 mm, narrowly bell-shaped, white to violet, scales free from filaments, oblong to oblanceolate, occasionally not alike; stamens 2--3.5 mm, unequal, included, sparsely short-hairy, filaments yellow; style 1--3 mm, included, cleft < 1/4. Fruit: 4--6 mm, oblong, puberulent. Seed: 20--50, +- 1 mm, pitted. Chromosomes: n=12.
Ecology: Rocky slopes, canyons, sagebrush scrub, pinyon/juniper woodland; Elevation: 1500--2700 m. Bioregional Distribution: n SNE; Distribution Outside California: western Nevada. Flowering Time: May--Jun
Unabridged Note: Named for Frank Peirson, and not to be confused with Phacelia piersoniae L.O. Williams of Wyoming (a synonym of Phacelia heterophylla var. virgata), named for Rua Pierson.
eFlora Treatment Author: Genevieve K. Walden, Robert Patterson, Laura M. Garrison & Debra R. Hansen
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Phacelia pedicellata
Next taxon: Phacelia perityloides
Citation for this treatment: Genevieve K. Walden, Robert Patterson, Laura M. Garrison & Debra R. Hansen 2017. Phacelia peirsoniana, in Jepson Flora Project (eds.) Jepson eFlora, Revision 1, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=37541, accessed on March 30, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on March 30, 2017.