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Collomia grandiflora

Higher Taxonomy
Family: PolemoniaceaeView DescriptionDichotomous Key

Habit: Annual, perennial herb, shrub, vine. Leaf: simple or compound, cauline (or most basal), alternate or opposite; stipules 0. Inflorescence: cymes, heads, clusters, or flower 1; bracts in involucres or not. Flower: sepals generally 5, fused at base, translucent membrane generally connecting lobes, torn by fruit; corolla generally 5-lobed, radial or bilateral, salverform to bell-shaped, throat often well defined; stamens generally 5, epipetalous, attached at >= 1 level, filaments of >= 1 length, pollen white, yellow, blue, or red; ovary superior, chambers generally 3, style 1, stigmas generally 3. Fruit: capsule. Seed: 1--many, when wetted swelling or not, gelatinous or not.
Genera In Family: 26 genera, 314 species: America, northern Europe, northern Asia; some cultivated (Cantua, Cobaea (cup-and-saucer vine), Collomia, Gilia, Ipomopsis, Linanthus, Phlox). Note: Leptodactylon moved to Linanthus.
eFlora Treatment Author: Robert Patterson, family description, key to genera
Scientific Editor: Robert Patterson, Thomas J. Rosatti, Bruce G. Baldwin.
Genus: CollomiaView DescriptionDichotomous Key

Stem: hairy or glandular. Leaf: alternate, simple, entire to generally pinnate-lobed, linear to ovate [fan-shaped]; basal short-petioled; cauline sessile. Inflorescence: heads or clusters, terminal, or flowers 1--3 in axils. Flower: calyx lobes connected by narrow membrane forming a pitcher-like projection at sinus, enlarging, not rupturing in fruit; corolla salverform to funnel-shaped. Fruit: ovate to elliptic, explosively dehiscent, valves reflexed on dehiscence. Seed: 1(2--3) per chamber, oblong, generally gelatinous when wet, brown. Chromosomes: 2n=16.
Species In Genus: 15 species: North America, southern South America. Etymology: (Greek: glue, from wet seed surface) Note: Annual species self-pollinated; perennial herb species generally cross-pollinated.
eFlora Treatment Author: Leigh A. Johnson & Dieter H. Wilken

Collomia grandiflora Lindl.
Habit: Annual. Stem: erect, simple or in robust plants branched above; internodes at mid-plant reflexed-short-white-nonglandular-hairy. Leaf: basal lanceolate, toothed or not; cauline lanceolate to linear, entire, lower glabrous to minutely hairy, upper in age also with glands. Inflorescence: head, terminal, occasionally on axillary stems. Flower: calyx 7--10 mm, lobes lanceolate; corolla 15--30 mm (< 5 mm in cleistogamous flowers), yellow to orange, fading white; filaments attached at > 1 level, some > 1 mm, at least 1 anther exserted; pollen generally blue. Seed: 1 per chamber.
Ecology: Open areas; Elevation: 120--3050 m. Bioregional Distribution: CA-FP, GB; Distribution Outside California: to British Columbia, Idaho, Colorado, Arizona; naturalized in Europe. Flowering Time: Apr--Jun Note: Plants with only cleistogamous flowers have stem 1, < 10 cm, with 3--7 flowers at tip.
Unabridged Note: Expanded author citation: Collomia grandiflora Douglas ex Lindl.
eFlora Treatment Author: Leigh A. Johnson & Dieter H. Wilken
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Citation for this treatment: Leigh A. Johnson & Dieter H. Wilken 2016. Collomia grandiflora, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on February 13, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on February 13, 2016.

Collomia grandiflora
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© 2015 Barry Breckling
Collomia grandiflora
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© 1982 Gary A. Monroe
Collomia grandiflora
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© 2002 Christopher L. Christie
Collomia grandiflora
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© 2008 Keir Morse
Collomia grandiflora
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© 2008 Keir Morse
Collomia grandiflora
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© 2009 Barry Breckling

More photos of Collomia grandiflora in CalPhotos

Geographic subdivisions for Collomia grandiflora:
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.