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Phacelia hastata var. hastata

Higher Taxonomy
Family: HydrophyllaceaeView DescriptionDichotomous Key
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: PhaceliaView DescriptionDichotomous Key

Habit: Annual to perennial herb, generally glandular-hairy, taprooted or from +- thick caudex. Leaf: generally cauline, generally alternate, simple to 2-pinnately compound, generally +- reduced upward. Inflorescence: cyme, generally dense, coiled, generally 1-sided; pedicels generally <= 5 mm, generally straight. Flower: sepals generally 5, generally fused at base, generally equal, generally +- alike, 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, generally glabrous inside, scales of tube base 0 or free from or fused to filament bases, generally white, nectary gland on petal midvein generally 0, each petal with generally 0, sometimes 2--many translucent areas, 2 or 4 of which parallel; stamens generally attached at same level, generally equal, generally exserted, bases generally not wider, with 2 or generally 0 wings, filaments generally white, pollen generally tan; 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 proximal to lobes, disk proximal to ovary generally inconspicuous. Fruit: capsule, oblong to spheric, generally rounded at base, generally beaked. Seed: 1--many (number sometimes due to ovule abortion), oblong to spheric, generally brown; abaxially generally pitted or cross-furrowed.
Etymology: (Greek: cluster, from dense inflorescence) Toxicity: Dermatitis caused by contact with hairs, especially glandular, of P. campanularia, P. crenulata, P. ixodes, P. minor, P. parryi, P. pedicellata (Reynolds et al. 1986 Contact Dermatitis 14:39--44). Note: Some California per species intergrade, hybridize, difficult to distinguish. Phacelia ixodes Kellogg, included in TJM (1993), not known from California. Since TJM2, Phacelia dalesiana J.T. Howell transferred to Howellanthus as Howellanthus dalesianus (J.T. Howell) Walden & R. Patt. Regarding indument in this treatment: minute (for e.g., puberulent) < 0.2 mm; short = 0.2--2 mm; long > 2 mm.
eFlora Treatment Author: Genevieve K. Walden, Robert W. Patterson, Laura M. Garrison & Debra R. Hansen
Reference: Hansen et al. 2009 Syst Bot 34:737--746; Walden & Patterson 2012 Madroño 59:211--222
Unabridged Reference: Gilbert et al. 2005 Syst Bot 30:627--634; Reynolds et al. 1986 Contact Dermatitis 14:39--44; Reynolds & Rodriguez 1979 Phytochemistry 18:1567--1568; Reynolds & Rodriguez 1981a Phytochemistry 20:1365--1366; Reynolds & Rodriguez 1981b Planta Medica 43:187--193; Reynolds & Rodriguez 1986 Phytochemistry 25:1617--1619.
Species: Phacelia hastataView Description 

Habit: Perennial herb 5--50 cm. Stem: not glandular (sparsely glandular distally). Leaf: mostly basal; blade 15--120 mm, <= petiole, lanceolate to widely elliptic, generally entire (or 2--4-lobed or compound with 3--5 leaflets), veins of basal leaves prominent. Flower: calyx lobes 3--7 mm, 5--9 mm in fruit, linear to lanceolate; corolla 4--7 mm, urn- to bell-shaped, white or lavender, scales fused to filament bases, oblong; stamens 6--10 mm, glabrous or hairy; style 7--10 mm, cleft 1/2, glabrous. Fruit: 2--4 mm, ovoid, stiff-hairy. Seed: 1--3, 1.5--2.5 mm, pitted in +- longitudinal rows.
Note: Varieties intergrade.
Unabridged Note: 1 other variety, Phacelia hastata Douglas ex Lehm. var. charlestonensis Cronquist, in Nevada.
Phacelia hastata Douglas ex Lehm. var. hastata
Stem: ascending to +- erect, 20--50 cm, hairs mostly +- appressed, some stiff, spreading, stem generally not glandular. Flower: calyx lobes generally not glandular. Chromosomes: n=11,22.
Ecology: Sandy to rocky slopes, scrub, conifer forest; Elevation: 380--3100 m. Bioregional Distribution: KR, CaRH, SNH, SnBr, GB; Distribution Outside California: to western Canada, South Dakota, Colorado. Flowering Time: May--Jul
Synonyms: Phacelia hastata subsp. hastata; Phacelia oreopola subsp. simulans Heckard; Phacelia alpina Rydb.; Phacelia biennis A. Nelson; Phacelia burkei Rydb.; Phacelia canescens Nutt.; Phacelia leucophylla Torr.; Phacelia nervosa Rydb.; Phacelia circinata Jacq. var. integrifolia Kuntze; Phacelia hastata var. alpina (Rydb.) Cronquist; Phacelia hastata var. leucophylla (Torr.) Cronquist; Phacelia heterophylla Pursh var. alpina A. Nelson; Phacelia leucophylla Torr. var. alpina Dundas; Phacelia leucophylla Torr. var. suksdorfii J.F. Macbr.; Phacelia magellanica (Lam.) Coville var. integrifolia (Kuntze) Kuntze; Phacelia sericea (Graham) A. Gray var. biennis Brand
Jepson eFlora Author: Genevieve K. Walden, Robert W. Patterson, Laura M. Garrison & Debra R. Hansen
Reference: Hansen et al. 2009 Syst Bot 34:737--746; Walden & Patterson 2012 Madroño 59:211--222
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Phacelia hastata var. hastata

botanical illustration including Phacelia hastata var. hastata

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Citation for this treatment: Genevieve K. Walden, Robert W. Patterson, Laura M. Garrison & Debra R. Hansen 2023, Phacelia hastata var. hastata, in Jepson Flora Project (eds.) Jepson eFlora, Revision 12,, accessed on May 18, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora,, accessed on May 18, 2024.

Phacelia hastata  
var. hastata
click for enlargement
©2006 Steve Matson
Phacelia hastata  
var. hastata
click for enlargement
©2015 Neal Kramer
Phacelia hastata  
var. hastata
click for enlargement
©2006 Steve Matson
Phacelia hastata  
var. hastata
click for enlargement
©2015 Neal Kramer
Phacelia hastata  
var. hastata
click for enlargement
©2017 Keir Morse

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Geographic subdivisions for Phacelia hastata var. hastata:
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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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All markers link to CCH specimen records. The original determination is shown in the popup window.
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.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

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).