Jepson eFlora: Taxon page
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Leptosiphon grandiflorus

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: 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 grandiflorus Benth.
Habit: Annual. Stem: branched above, hairy. Leaf: ascending, lobes 10--30 mm, linear, hairy or glabrous. Inflorescence: head. Flower: calyx 10--14 mm, hairy, membrane 2/3 calyx, wider than lobes; corolla funnel-shaped, 15--30 mm, with hairy ring inside, throat yellow, lobes white or pink; stamens included. Chromosomes: 2n=18.
Ecology: Open, grassy flats, generally sandy soil; Elevation: < 1200 m. Bioregional Distribution: NCo, CCo, SnFrB, n SCoR. Flowering Time: Apr--Jul
Synonyms: Linanthus grandiflorus (Benth.) Greene
eFlora Treatment Author: Robert Patterson & Robyn Battaglia
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Leptosiphon floribundus subsp. hallii
Next taxon: Leptosiphon harknessii

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botanical illustration including Leptosiphon grandiflorus


Citation for this treatment: Robert Patterson & Robyn Battaglia 2017. Leptosiphon grandiflorus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 21, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on October 21, 2017.

Leptosiphon grandiflorus
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© Bob Patterson and CNPS
Leptosiphon grandiflorus
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© 2017 Dylan Neubauer
Leptosiphon grandiflorus
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© 2006 Aaron Schusteff
Leptosiphon grandiflorus
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© 2009 Barry Breckling
Leptosiphon grandiflorus
click for enlargement
© 2009 Barry Breckling
Leptosiphon grandiflorus
click for enlargement
© 2017 Dylan Neubauer

More photos of Leptosiphon grandiflorus in CalPhotos

Geographic subdivisions for Leptosiphon grandiflorus:
NCo, CCo, SnFrB, n SCoR.
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.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.