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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 Benth. ex 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
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 2017. Antirrhinum coulterianum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 20, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on October 20, 2017.

Antirrhinum coulterianum
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© 2015 Barry Breckling
Antirrhinum coulterianum
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© 2008 Tony Morosco
Antirrhinum coulterianum
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© 2014 Keir Morse
Antirrhinum coulterianum
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© 2009 Aaron Schusteff
Antirrhinum coulterianum
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© 2011 Neal Kramer
Antirrhinum coulterianum
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© 2008 Tony Morosco

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. 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.