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Vascular Plants of California
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Collomia larsenii
TALUS COLLOMIA


Higher Taxonomy
Family: PolemoniaceaeView DescriptionDichotomous Key
Common Name: PHLOX FAMILY
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 W. Patterson, family description, key to genera, except as noted
Scientific Editor: Robert W. Patterson, Thomas J. Rosatti.
Genus: CollomiaView DescriptionDichotomous Key


Common Name: TRUMPET FLOWER
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.
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
Unabridged Reference: Wilken et al. 1982 Biochem Syst Ecol 10:239--243
Collomia larsenii (A. Gray) Payson
NATIVE
Habit: Perennial herb, generally cespitose, from slender rhizomes. Stem: generally branched, < 5 cm; internodes congested, glandular-hairy. Leaf: blade < 2 cm, 1--2-pinnate- or -palmate-lobed from elongate, clasping petiole; lobes linear-oblong, narrowed at base, glandular-hairy. Inflorescence: clusters, terminal; flowers 6--9. Flower: calyx 5--9 mm; corolla 10--15 mm, light to deep purple; filaments attached at 1 level, > 3 mm, pollen blue. Seed: 1 per chamber.
Ecology: Volcanic talus; Elevation: 2225--3500 m. Bioregional Distribution: CaRH (Lassen, Magee peaks, Little Mount Hoffman); Distribution Outside California: to Washington. Flowering Time: Jun--Sep
Synonyms: Collomia debilis (S. Watson) Greene var. larsenii (A. Gray) Brand
Unabridged Note: Distinct from Collomia debilis of northern Washington, Rocky Mountains.
Jepson eFlora Author: Leigh A. Johnson & Dieter H. Wilken
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

Previous taxon: Collomia heterophylla
Next taxon: Collomia linearis

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Botanical illustration including Collomia larsenii

botanical illustration including Collomia larsenii

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Citation for this treatment: Leigh A. Johnson & Dieter H. Wilken 2012, Collomia larsenii, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=20019, accessed on April 16, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 16, 2024.

Collomia larsenii
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©2006 Julie Kierstead Nelson
Collomia larsenii
click for enlargement
©2006 Julie Kierstead Nelson
Collomia larsenii
click for enlargement
©2006 Julie Kierstead Nelson
Collomia larsenii
click for enlargement
©2008 George W. Hartwell
Collomia larsenii
click for enlargement
©2009 George W. Hartwell

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Geographic subdivisions for Collomia larsenii:
CaRH (Lassen, Magee peaks, Little Mount Hoffman)
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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).