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Vascular Plants of California
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Collinsia callosa

Higher Taxonomy
Family: PlantaginaceaeView DescriptionDichotomous Key
Habit: Annual to shrub, some aquatic. Leaf: basal or cauline, alternate or opposite (whorled), simple, entire to dentate or lobed, venation generally pinnate; stipules 0. Inflorescence: raceme, spike, or flowers axillary in 1--few-flowered clusters; flowers few to many, each subtended by 1 bract. Flower: unisexual or bisexual, radial or bilateral; sepals 4--5, generally fused at base; corolla 4--5-lobed, scarious or not, persistent or not, generally 2-lipped, upper lip generally 2-lobed, lower generally 3-lobed, spur present or not, tube sac-like at base or not; stamens 2 or 4, alternate corolla lobes, epipetalous, staminode 0 or 1--2, anthers opening by 2 slits; ovary superior, [1]2--4-chambered, style 1, stigma lobes 0 or 2. Fruit: generally a capsule, septicidal, loculicidal, circumscissile, or dehiscing by terminal slits or pores.
Genera In Family: 110 genera, +- 2000 species: worldwide, especially temperate. Note: Veronicaceae sensu Olmstead et al. Recently treated to include Callitrichaceae, Hippuridaceae, and most non-parasitic California genera of Scrophulariaceae (except Buddleja, Diplacus, Erythranthe, Limosella, Mimetanthe, Mimulus, Myoporum, Scrophularia, Verbascum). California Maurandya moved to Holmgrenanthe and Maurandella. Limnophila ×ludoviciana Thieret an occasional agricultural weed in rice fields. Hebe ×franciscana (Eastw.) Souster, Hebe speciosa (R. Cunn.) Andersen only cultivated.
eFlora Treatment Author: Margriet Wetherwax, except as noted
Scientific Editor: Robert Patterson, Bruce G. Baldwin.
Genus: CollinsiaView DescriptionDichotomous Key

Habit: Annual, often glandular, sometimes brown-staining. Leaf: opposite; proximal petioled. Inflorescence: bracted, often interrupted; flowers 1--many in leaf axils. Flower: calyx lobes 5, generally glabrous on inner surface; corolla +- pea-like, uniformly pale, or generally with pale regions, especially throat and base of upper lip (+- uniformly dark in Collinsia greenei), generally glabrous outside, tube short, throat +- angled to tube, +- pouched on upper side, lips generally +- = throat, upper lobes 2, +- reflexed, lower lobes 3, lateral spreading, central lobe keeled, enclosing stamens and style; stamens 4, attached unequally near throat base, spur at base of upper filaments > 1 mm, vestigial, or 0; staminode gland-like; style > 2 mm, stigma minutely 2-lobed. Fruit: septicidal and loculicidal (valves 2-lobed). Seed: generally few, +- oblong, generally plump; inner surface +- concave.
Species In Genus: +- 20 species: North America, especially California. Etymology: (Zaccheus Collins, Philadelphia botanist, 1764--1831) Note: Late-season flowers generally atypically small.
eFlora Treatment Author: Michael S. Park & Elizabeth Chase Neese
Collinsia callosa Parish
Habit: Plant 4--25 cm, stout, fleshy. Leaf: generally < 3 cm, oblong to ovate, obtuse, generally entire, +- rolled under; middle and distal leaves clasping. Inflorescence: open, conspicuously glandular; bracts > 2 mm; flowers 1--3 per node, pedicel > calyx, spreading to ascending. Flower: calyx +- = fruit, in fruit generally > 5 mm wide, base +- truncate, lobe tips +- blunt; corolla generally 7--9 mm, lavender-blue; filaments generally glabrous, upper pair rarely sparsely hairy, basal spur 0--0.5 mm. Seed: 6--8, +- 2 mm.
Ecology: Disturbed rocky slopes, open chaparral, sagebrush scrub, pinyon/juniper and pine woodland; Elevation: 1000--2300 m. Bioregional Distribution: s SN, Teh, s SCoRO, e WTR, SnGb, DMoj/SnGb, DMoj/SNE, DMtns (Panamint, Argus ranges). Flowering Time: Apr--Jun
Jepson eFlora Author: Michael S. Park & Elizabeth Chase Neese
Jepson Online Interchange

Previous taxon: Collinsia bartsiifolia var. stricta
Next taxon: Collinsia childii

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Botanical illustration including Collinsia callosa

botanical illustration including Collinsia callosa


Citation for this treatment: Michael S. Park & Elizabeth Chase Neese 2012, Collinsia callosa, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on December 13, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on December 13, 2018.

Collinsia callosa
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© 2016 Keir Morse
Collinsia callosa
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© 2016 Keir Morse
Collinsia callosa
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© 2016 Steve Matson
Collinsia callosa
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© 2016 Steve Matson
Collinsia callosa
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© 2017 Neal Kramer
Collinsia callosa
click for enlargement
© 2016 Steve Matson

More photos of Collinsia callosa in CalPhotos

Geographic subdivisions for Collinsia callosa:
s SN, Teh, s SCoRO, e WTR, SnGb, DMoj/SnGb, DMoj/SNE, DMtns (Panamint, Argus ranges).
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, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.