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Hesperochiron pumilus

Higher Taxonomy
Family: BoraginaceaeView DescriptionDichotomous Key

Habit: Annual to shrub or small tree, or non-green root parasite, often bristly or sharp-hairy. Stem: prostrate to erect. Leaf: basal and/or cauline, generally simple, generally alternate. Inflorescence: generally cymes, or panicle-, raceme-, head-, or spike-like, generally coiled in flower (often described as scorpioid), generally elongating in fruit, or flowers 1--2 per axil. Flower: bisexual, generally radial; sepals (4)5(10), fused at least at base, or free; corolla (4)5(10)-lobed, salverform, funnel-shaped, rotate, or bell-shaped, generally without scales at tube base, with 0 or 5 appendages at tube top, alternate stamens; stamens epipetalous; ovary generally superior, entire to 4-lobed, style 1(2), entire or 2-lobed or -branched. Fruit: valvate or circumscissile capsule or nutlets 1--4, free (fused), smooth to roughened, prickly or bristly or not.
Genera In Family: +- 120 genera, +- 2300 species: tropics, temperate, especially western North America, Mediterranean; some cultivated (Borago, Heliotropium, Echium, Myosotis, Nemophila, Phacelia, Symphytum, Wigandia). Toxicity: Many genera may be TOXIC from pyrrolizidine alkaloids or accumulated nitrates. Note: Recently treated to include Hydrophyllaceae, Lennoaceae. Wigandia urens added, as naturalized.
eFlora Treatment Author: Ronald B. Kelley, Robert Patterson, Richard R. Halse & Timothy C. Messick, family description, key to genera; treatment of genera by Ronald B. Kelley, except as noted
Scientific Editor: Ronald B. Kelley, Robert Patterson, Thomas J. Rosatti, Bruce G. Baldwin, David J. Keil.
Genus: HesperochironView DescriptionDichotomous Key

Habit: Perennial herb, scapose; root caudex-like. Leaf: in basal rosette, spreading or ascending; blade tapered to petiole, generally entire, generally ciliate. Inflorescence: flowers 1; peduncle erect or spreading, 1--10 cm, slender. Flower: calyx lobes 2--9 mm, generally not alike, glabrous to hairy, ciliate; corolla scales 0, tube generally dense-hairy inside, throat generally yellow, lobes glabrous to hairy, white or +- blue, generally tinged or marked with lavender or purple; stamens included, generally unequal, filament base widened; ovary hairy, chamber 1, style 1, 2--5 mm, stigmas 2. Fruit: capsule, 5--11 mm, ovoid, hairy. Seed: many, ovoid, angular, red-brown, honeycombed or pitted.
Species In Genus: 2 species: western United States, northern Mexico. Etymology: (Greek: evening or western centaur)
eFlora Treatment Author: Robert Patterson & Richard R. Halse

Hesperochiron pumilus (Griseb.) Porter
Habit: Rhizomes generally slender. Leaf: generally 2--10, 1--7 cm, < 2 cm wide, linear-oblong to oblanceolate or oblong. Inflorescence: flowers generally 1--8 per plant. Flower: corolla 5--15 mm, limb 7--30 mm wide, lobes 3--11 mm, rounded. Chromosomes: n=8.
Ecology: Wet meadows, slopes, flats; Elevation: 450--3000 m. Bioregional Distribution: KR, NCoRI, CaRH, SNH, Teh, WTR, GB (exc W&I), n DMoj (Death Valley); Distribution Outside California: to Washington, Montana, Utah, Arizona. Flowering Time: Apr--Jul
Synonyms: Villarsia pumila Griseb.; Hesperochiron pumilus var. ciliatus (Greene) Brand; Capnorea ciliata (Greene) Greene; Hesperochiron ciliatus Greene; Hesperochiron pumilus f. fulcratus (Greene) Brand; Capnorea fulcrata Greene; Hesperochiron pumilus f. hirtellus (Greene) Brand; Capnorea hirtella Greene; Hesperochiron pumilus f. nervosus (Greene) Brand; Capnorea nervosa Greene; Hesperochiron pumilus var. vestitus Brand; Hesperochiron pumilus f. villosulus (Greene) Brand; Capnorea villosula Greene; Hesperochiron campanulatus (Greene) Brand; Capnorea campanulata Greene
eFlora Treatment Author: Robert Patterson & Richard R. Halse
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botanical illustration including Hesperochiron pumilus


Citation for this treatment: Robert Patterson & Richard R. Halse 2016. Hesperochiron pumilus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 29, 2016.

Hesperochiron pumilus
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© 1998 Larry Blakely
Hesperochiron pumilus
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© 2005 Steve Matson
Hesperochiron pumilus
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© 2009 Barry Breckling
Hesperochiron pumilus
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© 2009 Barry Breckling
Hesperochiron pumilus
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© 2008 Keir Morse
Hesperochiron pumilus
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© 2010 James M. Andre

More photos of Hesperochiron pumilus in CalPhotos

Geographic subdivisions for Hesperochiron pumilus:
KR, NCoRI, CaRH, SNH, Teh, WTR, GB (exc W&I), n DMoj (Death Valley);
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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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 eFlora flowering time.