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Stem: prostrate to erect.

Key to Boraginaceae


Robert Patterson, Laura M. Garrison & Debra R. Hansen

Leaf: generally alternate, simple to 2-pinnately compound, generally ± reduced upward.
Inflorescence: cyme, generally dense, coiled, generally 1-sided; pedicel generally <= 5 mm.
Flower: calyx lobes generally 5, generally fused at base, generally persistent, enlarging in fruit; corolla generally deciduous, at least some persistent and withering in fruit in some species, rotate to tubular or bell- or funnel-shaped, ± white, blue, purple, pink or yellow, tube and throat not always clearly differentiated, scales of tube base free or fused to filaments, or scales 0; stamens generally attached at same level, equal, generally exserted; ovary chamber 1, sometimes appearing as 2 due to intrusion of the 2 placentas, placentas parietal, enlarging and meeting in fruit, style 2-lobed, generally hairy below lobes.
Fruit: capsule, oblong to spheric.
Seed: 1–many, oblong to spheric, generally brown; abaxial surface generally pitted or cross-furrowed.
± 175 species: Am; some cultivated for ornamental. (Greek: cluster, from dense inflorescence) Bristly hairs may cause dermatitis. [Gilbert et al. 2005 Syst Bot 30:627–634] Some CA per species intergrade, hybridize, difficult to distinguish. Phacelia ixodes Kellogg, included in TJM (1993), not known from CA.

Key to Phacelia

P. malvifolia Cham.
Annual 20–100 cm; densely yellow-stiff-hairy.
Stem: generally erect, generally few-branched, glandular-puberulent; hairs bulb-based.
Leaf: 20–140 mm; blade >= petiole, ± deltate to ± round, proximal lobed to compound ( segments 3, again toothed to irregularly lobed), distal generally toothed or lobed.
Flower: calyx lobes 3–5 mm, 4–6 mm in fruit, unequal, oblong to oblanceolate; corolla deciduous, 5–7 mm, widely bell-shaped, cream-white; stamens 5–10 mm, glabrous; style 8–12 mm, short-hairy.
Fruit: 2–3 mm, spheric, puberulent.
Seed: 2–6, 2–3 mm, pitted.
n=11. Sandy or gravelly soils, scrub, conifer forest; < 1400 m. North Coast, Central Western California; Oregon. Apr–Jul [Online Interchange]

Previous taxon: Phacelia lyonii
Next taxon: Phacelia marcescens


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map of distribution 1

Data provided by the participants of the Consortium of California Herbaria.
Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes Manual flowering time.