Habit: Annual, perennial herb, glabrous to hairy, often glandular.
Stem: ascending, erect and self-supporting, or vine-like, often clinging by twining pedicels or branchlets.
Leaf: proximal generally opposite, distal alternate, generally +- reduced distally on stem; veins pinnate.
Inflorescence: raceme or flowers 1 in axils.
Flower: cleistogamous or opening; calyx lobes +- equal or uppermost generally largest; corolla tube of opening flowers truncate or with rounded sac-like extension at base, lower lip base generally swollen, closing throat; stamens 2 or 4, generally included, staminode 2 or 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: Antirrhinum cyathiferum moved to
Pseudorontium.
Jepson eFlora Author: David J. Keil, Margriet Wetherwax & David M. Thompson
Reference: Oyama & Baum 2004 Amer J Bot 91:918--925; Vargas et al. 2004 Pl Syst Evol 249:151--172
Unabridged Reference: Ghebrehiwet et al. 2000 Pl Syst Evol 220:223--239; Thompson 1988 Syst Bot Monogr 22:1--142; Keil 2018 Phytoneuron 2018-18: 1--2Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)Key to Antirrhinum
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