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Hesperochiron pumilus


Higher Taxonomy
Family: HydrophyllaceaeView DescriptionDichotomous Key
Common Name: WATERLEAF FAMILY
Habit: Annual, perennial herb, generally hairy, generally taprooted. Stem: prostrate to erect. Leaf: simple to pinnately compound, basal or cauline, alternate or opposite; stipules 0. Inflorescence: cyme, generally raceme-like and coiled, or flowers 1. Flower: bisexual, generally radial; calyx lobes generally 5, generally fused at base, generally persistent, enlarging in fruit; corolla rotate to cylindric, generally deciduous, lobes generally 5, appendages in pairs on tube between filaments or 0; stamens generally 5, epipetalous, filament base sometimes appendaged, appendages scale-like; ovary generally superior, chambers 1 or 2, placentas 2, parietal, enlarged into chamber, sometimes meeting so ovary appears 2--5-chambered, style 1, style branches 2, stigmas generally head-like. Fruit: capsule, generally loculicidal; valves generally 2.
Genera In Family: 12 genera, 240--260 species: especially western US; some cultivated (Emmenanthe, Nemophila, Phacelia). Note: Included in Boraginaceae in TJM2 and some other treatments (Angiosperm Phylogeny Group IV 2016 Bot J Linn Soc 181:1--20) but treated as separate family (excluding Namaceae) by Boraginales Working Group (Luebert et al. 2016).
eFlora Treatment Author: Genevieve K. Walden, Robert W. Patterson & Richard R. Halse, except as specified
Scientific Editor: Bruce G. Baldwin
Genus: HesperochironView DescriptionDichotomous Key


Habit: Perennial herb, scapose; taprooted, root caudex-like, rhizomes present or 0. Leaf: simple, in basal rosette, minute- to short-hairy or sometimes glabrous in age, glandular-hairy or not; blade tapered to petiole or leaf sessile, linear-lanceolate to ovate, oblanceolate or elliptic, entire; petiole tapered to blade. Inflorescence: axillary from stem base, flowers 1 (few-flowered cyme in well-established plants); peduncle 2--5 cm, +- ascending to +- erect in flower, to 10+ cm, spreading in fruit, short- to long-hairy or glabrous in age. Flower: calyx lobes unequal in size and shape, enlarged in fruit, outer (2)3 broad, inner 2(3) narrow; corolla rotate or bell-shaped, throat yellow or white, lobes white to lavender, generally marked purple; corolla scales 0 or reduced; nectary glands 0; stamens included, unequal to +- equal, attached at 1 level, filaments widened at base, not appendaged, not winged; ovary chamber appearing 1, style 1, included or +- exserted, shallowly 2-lobed. Fruit: 5--11 mm, ovoid, hairy. Seed: 20--40, ovoid, angled, dark- or red-brown, honeycombed or pitted; attached fleshy structure 0.
Species In Genus: 2 species: western United States, northern Mexico. Etymology: Greek: evening or western centaur
eFlora Treatment Author: Genevieve K. Walden, Robert W. Patterson & Richard R. Halse
Hesperochiron pumilus (Douglas ex Griseb.) Porter
NATIVE
Habit: Plant 2--10 cm, 10+ cm diam.; caudex simple or branched below or at soil surface, sometimes rhizomed. Leaf: generally 2--10, short-glandular hairy; blade 1--8 cm, 0.5--3 cm wide, linear-oblong to oblanceolate or oblong; petiole 1--6(--10) cm, generally +- buried in soil. Inflorescence: flowers generally 1--8 per plant. Flower: calyx lobes 3--9 mm, 1--4 mm wide, linear-oblong to narrowly oblong in flower, 3--10 mm, 2--6 mm wide, broadly lanceolate to ovate in fruit, minute- to short-hairy, glandular; corolla 5--15 mm, +- rotate to broadly bell-shaped, tube and throat generally yellow (white), lobes white or bluish-, purplish-, or pinkish-white or pink, sometimes pink-, lavender-, or purple-veined or -marked, limb (7--)10--30 mm diam, lobes oval to round, broad, glabrous or becoming so adaxially; stamens 8--12 mm, filaments white or yellow; styles 3--8 mm. Fruit: 5--9 mm. Seed: 1--1.5 mm. Chromosomes: n=8.
Ecology: Wet meadows, slopes, flats; Elevation: 400--3000 m. Bioregional Distribution: KR, NCoRI, CaRH, SNH, Teh, WTR, GB (exc W&I), n DMoj (Death Valley); Distribution Outside California: to British Columbia, Montana, Utah, Arizona. Flowering Time: Apr--Jul
Synonyms: Capnorea pumila (Douglas ex Griseb.) Greene; Villarsia pumila Douglas ex 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
Jepson eFlora Author: Genevieve K. Walden, Robert W. Patterson & Richard R. Halse
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Hesperochiron pumilus

botanical illustration including Hesperochiron pumilus

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Citation for this treatment: Genevieve K. Walden, Robert W. Patterson & Richard R. Halse 2021, Hesperochiron pumilus, in Jepson Flora Project (eds.) Jepson eFlora, Revision 9, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=28029, accessed on May 23, 2022.

Citation for the whole project: Jepson Flora Project (eds.) 2022, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on May 23, 2022.

Hesperochiron pumilus
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© 2005 Steve Matson
Hesperochiron pumilus
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© 2016 Keir Morse
Hesperochiron pumilus
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© 2016 Keir Morse
Hesperochiron pumilus
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© 1977 Gary A. Monroe
Hesperochiron pumilus
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© 2009 Barry Breckling
Hesperochiron pumilus
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© 2016 Keir Morse

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)
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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).





 

Data provided by the participants of the  Consortium of California Herbaria.
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Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).