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Antirrhinum coulterianum

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, Limosella, 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: AntirrhinumView DescriptionDichotomous Key

Habit: Annual, perennial herb, glabrous to hairy. Stem: ascending, erect, or vine-like, often clinging by twining pedicels or branchlets. Leaf: proximal generally opposite, distal alternate, generally reduced distally on stem; veins pinnate. Inflorescence: cleistogamous or opening; raceme or flower 1 in axils. Flower: uppermost calyx lobe generally largest; corolla tube of opening flowers truncate or with rounded sac-like extension at base, lower lip base generally swollen, closing throat; stamens 4, generally included, staminode 0; style included, straight or curved, glabrous or glandular-puberulent to near tip, stigma inconspicuous. Fruit: ovoid to spheric; chambers 2, generally dehiscent by 1--2 pores near tip, lower chamber generally larger, upper occasionally indehiscent. Seed: many, generally with tubercles or netted ridges, winged or not.
Species In Genus: 35 species: western North America, western Mediterranean. Etymology: (Greek: nose-like, from corolla shape) Note: North America taxa more closely related to Mohavea than to Mediterranean taxa; revision needed. Antirrhinum cyathiferum moved to Pseudorontium.
eFlora Treatment Author: Margriet Wetherwax & David M. Thompson

Antirrhinum coulterianum A. DC.
Habit: Annual, glabrous except stem base, inflorescence hairy. Stem: erect but weak, often clinging to other plants or debris, 12--150 cm. Leaf: basal rosette occasionally present; petiole 0--3 cm, winged; blade < 11 cm, linear to lanceolate, tip acute to rounded. Inflorescence: raceme, terminal, flowers cleistogamous and opening; pedicels 1--5 mm, proximal-most generally to 13 mm, subtended by twining branchlets. Flower: calyx densely glandular hairy, hairs to 2.5 mm, lobes 3--6.4 mm, +- equal; corolla 9--12 mm, white to lavender; lower stamens becoming exserted. Fruit: 5--10 mm; upper chamber indehiscent. Seed: +- 1 mm, ovoid, black, netted and ridged. Chromosomes: n=15.
Ecology: Among shrubs in desert, generally on burns elsewhere; Elevation: < 2700 m. Bioregional Distribution: s SCoRO, SW (exc ChI), nw edge DSon; Distribution Outside California: northern Baja California. Flowering Time: Apr--Jul
Synonyms: Sairocarpus coulterianus (Benth. ex A.DC.) D.A. Sutton
Unabridged Note: Expanded author citation: Antirrhinum coulterianum Benth. ex A. DC.
eFlora Treatment Author: Margriet Wetherwax & David M. Thompson
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botanical illustration including Antirrhinum coulterianum


Citation for this treatment: Margriet Wetherwax & David M. Thompson 2016. Antirrhinum coulterianum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on February 13, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on February 13, 2016.

Antirrhinum coulterianum
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© 2014 Keir Morse
Antirrhinum coulterianum
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© 2009 Neal Kramer
Antirrhinum coulterianum
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© 2008 Tony Morosco
Antirrhinum coulterianum
click for enlargement
© 2011 Neal Kramer
Antirrhinum coulterianum
click for enlargement
© 2009 Neal Kramer
Antirrhinum coulterianum
click for enlargement
© 2014 Keir Morse

More photos of Antirrhinum coulterianum in CalPhotos

Geographic subdivisions for Antirrhinum coulterianum:
s SCoRO, SW (exc ChI), nw edge DSon;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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.