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Linanthus filiformis

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, except as noted
Scientific Editor: Robert Patterson, Thomas J. Rosatti.
Genus: LinanthusView DescriptionDichotomous Key

Habit: Annual, perennial herb, subshrub. Stem: generally erect, generally branched from base. Leaf: cauline, alternate or opposite, entire or lobes 3--9, pinnate or palmate, linear to narrow-lanceolate or spoon-shaped. Inflorescence: open or dense clusters or cyme or flower 1; bracts leaf-like; flowers sessile or not. Flower: corolla funnel-shaped, salverform, or bell-shaped; stamens attached at 1 level, included or exserted, pollen yellow. Fruit: capsule, valves 3(4). Seed: generally many, when wet gelatinous to not.
Species In Genus: 25 species: western North America. Etymology: (Greek: flax flower) Note: Other taxa in TJM (1993) moved to Leptosiphon. Linanthus bernardinus described since TJM2 (Fraga & Bell 2012 Aliso 30: 97--102).
eFlora Treatment Author: Robert Patterson & J. Mark Porter

Linanthus filiformis (A. Gray) J.M. Porter & L.A. Johnson
Habit: Plant glabrous or sparsely glandular-hairy. Stem: 5--15 cm, branches few to many, thread-like, glaucous. Leaf: basal rosette 0 or ephemeral; cauline spreading, 1--3 cm, thread-like, entire. Inflorescence: flowers generally 2 per stem; pedicel 2--16 mm. Flower: calyx 2--4 mm, tube < 1 mm, lobes acuminate, spreading in fruit; corolla 4--7 mm, yellow, lobes 3--5 mm, oblong; stamens attached near base; stamens, style well exserted, generally exceeded by corolla lobes. Fruit: 2--4 mm. Seed: many, gelatinous when wet. Chromosomes: 2n=18.
Ecology: Open, rocky canyon slopes, washes; Elevation: 300--1800 m. Bioregional Distribution: SNE, D; Distribution Outside California: to Utah, Arizona. Flowering Time: Mar--May
Synonyms: Gilia filiformis A. Gray
eFlora Treatment Author: Robert Patterson & J. Mark Porter
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Citation for this treatment: Robert Patterson & J. Mark Porter 2017. Linanthus filiformis, Revision 3, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on August 19, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on August 19, 2017.

Linanthus filiformis
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© 2004 James M. Andre
Linanthus filiformis
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© 2005 Aaron Schusteff
Linanthus filiformis
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© 2005 James M. Andre
Linanthus filiformis
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© 2011 Steve Matson
Linanthus filiformis
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© 2011 Steve Matson
Linanthus filiformis
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© 2011 Steve Matson

More photos of Linanthus filiformis in CalPhotos

Geographic subdivisions for Linanthus filiformis:
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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).

View elevation by latitude chart
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.