Jepson eFlora: Taxon page
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Leptosiphon bolanderi

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.
Genus: LeptosiphonView DescriptionDichotomous Key

Habit: Annual, perennial herb. Stem: generally erect, generally branched from base. Leaf: cauline, opposite, entire or lobes 3--9, palmate, linear to narrowly lanceolate or spoon-shaped, generally not fused by membrane. Inflorescence: head, open clusters, few-flowered cyme, or flower 1; bracts +- leaf-like, generally palmate-lobed, lobes generally not connected by translucent membrane; flowers sessile or not. Flower: sepals generally equal; corolla funnel-shaped, salverform, or bell-shaped, with hairy ring inside tube or generally not (determined at 10×); stamens attached at 1 level, pollen yellow.
Species In Genus: 30 species: western North America, Chile. Etymology: (Greek: narrow tube, for corollas of some species) Note: Calyx lobe membrane generally expressed as length relative to calyx or lobe length, or as width relative to calyx lobe.
eFlora Treatment Author: Robert Patterson & Robyn Battaglia

Leptosiphon bolanderi (A. Gray) J.M. Porter & L.A. Johnson
Habit: Annual. Stem: 5--20 cm, thread-like, glabrous or hairy, glandular or not. Leaf: lobes 2--5 mm, linear. Inflorescence: flower 1; peduncle 5--25 mm, thread-like. Flower: calyx 4--6 mm, membrane 1/2 to +- = calyx, generally hairy, glandular; corolla funnel-shaped, tube < 5 mm, <= calyx, white, pink, blue, or lilac, with hairy ring inside, throat < 2 mm, generally yellow, lobes 2--3 mm, white or pink; stamens attached above hairy ring, exserted; stigmas <= 1 mm. Chromosomes: 2n=18.
Ecology: Drying areas in woodland, chaparral; Elevation: 200--1700 m. Bioregional Distribution: NW, CaR, n&c SNF, SNH, SnFrB, MP; Distribution Outside California: Oregon. Flowering Time: Mar--Jul Note: Some populations difficult to distinguish from Leptosiphon ambiguus or Leptosiphon rattanii.
Synonyms: Linanthus bolanderi (A. Gray) Greene; Linanthus bakeri H. Mason
eFlora Treatment Author: Robert Patterson & Robyn Battaglia
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Citation for this treatment: Robert Patterson & Robyn Battaglia 2016. Leptosiphon bolanderi, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 31, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 31, 2016.

Leptosiphon bolanderi
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© 2013 Barry Breckling
Leptosiphon bolanderi
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© 2010 George W. Hartwell
Leptosiphon bolanderi
click for enlargement
© 2010 George W. Hartwell

More photos of Leptosiphon bolanderi in CalPhotos

Geographic subdivisions for Leptosiphon bolanderi:
NW, CaR, n&c SNF, SNH, SnFrB, MP;
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).

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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.