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Vascular Plants of California
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Pholistoma auritum


Higher Taxonomy
Family: BoraginaceaeView DescriptionDichotomous Key
Common Name: BORAGE or WATERLEAF FAMILY
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: PholistomaView DescriptionDichotomous Key


Habit: Annual, fleshy. Stem: prostrate or reclined, many-branched, brittle; angles +- glabrous, bristly, or generally with hooked prickles. Leaf: cauline, lower opposite, upper alternate; petioles generally winged, clasping; blade pinnate-lobed, uppermost reduced, short-petioled, generally deltate, 3-lobed, with small, sharp bristles both surfaces. Inflorescence: terminal, axillary, opposite leaves, or flowers 1; pedicels present. Flower: calyx lobes hairy, bristly-ciliate; corolla rotate, lobes +- = tube, generally hairy; stamens included, equal, equally attached; ovary bristly-hairy, chamber appearing 1, style 1, 2-lobed in distal 1/2. Fruit: capsule, spheric, stout-bristly-hairy. Seed: 1--8, spheric, brown, pitted or honeycombed.
Species In Genus: 3 species: California, Arizona, Baja California. Etymology: (Greek: scale mouth)
eFlora Treatment Author: Robert Patterson & Richard R. Halse
Unabridged Reference: Constance 1939 Bull Torrey Bot Club 66:341--352
Pholistoma auritum (Lindl.) Lilja
NATIVE
Stem: 2--12 dm. Leaf: petiole wide-winged, clasping; lower leaves 4--16 cm, 1--8 cm wide, blade oblong to lance-ovate, base cordate, tip acuminate, lobes 5--13, oblong or lanceolate, obtuse or acute, entire or 1--5-toothed. Inflorescence: flowers 1 or 2--6 in cymes; pedicels 1--3 cm. Flower: calyx lobes 3--9 mm, +- lanceolate, sinus appendages 1--4 mm; corolla 3--15 mm, 5--30 mm wide, blue to purple with darker marks in throat; style 4--8 mm. Fruit: 5--10 mm wide, enclosed in calyx. Seed: 1--4.

Jepson eFlora Author: Robert Patterson & Richard R. Halse
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Jepson Video for Pholistoma auritum

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© 2003 Michael Charters


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Citation for this treatment: Robert Patterson & Richard R. Halse 2012, Pholistoma auritum, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=37885, accessed on August 05, 2021.

Citation for the whole project: Jepson Flora Project (eds.) 2021, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on August 05, 2021.

Pholistoma auritum var. auritum
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© 2014 Steve Matson
Pholistoma auritum var. auritum
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© 2014 Keir Morse
Pholistoma auritum var. arizonicum
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© 2017 Keir Morse
Pholistoma auritum var. auritum
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© 2008 Keir Morse
Pholistoma auritum var. auritum
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© 2014 Keir Morse
Pholistoma auritum var. arizonicum
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© 2012 James M. Andre

More photos of Pholistoma auritum var. arizonicum in CalPhotos



Geographic subdivisions for Pholistoma auritum:
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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).