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Key to AntirrhinumView taxon page for Antirrhinum
(For a list of species in Antirrhinum, use the above link.) Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots. 1. Stamens 2, staminodes 2 1' Stamens 4, staminodes 0 3. Pedicels 3–10 cm, twining or with U-shaped hook 4. Corolla of opening flowers yellow and gold with maroon flecks on lower lip; fruit fragile, opening by irregular bursting on sides ..... A. filipes 4' Corolla of opening flowers lavender to deep blue-purple, veins darker; fruit firm, dehiscent Opening at maturity to release contents; usually pertaining to anthers or fruits. by 2 slits at tip ..... A. kelloggii 3' Pedicels 0.1–2.5 cm, not twining, not hooked 5. Proximal-most flowers not subtended by branchlets; flowers all opening; annual to perennial Completing life cycle (germination through death) in more than two years or growing seasons, generally non-woody (at least above ground) to woody; includes perennial herbs as well as subshrubs to trees; the abbreviation 'per' only refers to perennial herb, not to the word 'perennial' alone. herb; plants self-supporting 6. Lower calyx lobes 1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth. >= corolla tube; seed generally smooth, 1 side flattened, with raised, rough, irregular border ..... [A. orontium] 6' Lower calyx lobes < to << corolla tube; seed netted, ridged, or winged 8. Flowers in terminal racemes; corolla 13–18 mm, pale pink to red; often perennial herb from caudex Generally short, sometimes woody, more or less vertical stem of a perennial, at or beneath ground level. 8' Flowers 1 in leaf Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets). axils; corolla generally white, cream, or pale lavender, often with violet or purple veins or marks, 7–14 mm; annual 10. Corolla veins violet; swollen lower lip base with dense, cylindric Elongate, with parallel sides and, at any point, round in transverse section. hairs to 1 mm; KR, NCoRI, w CaR, n ScV ..... A. cornutum 10' Corolla veins not contrasting in color; swollen lower lip base with sparse, sphere-tipped hairs; SN (especially SNF) ..... A. leptaleum 5' Proximal-most flowers and often others generally subtended by branchlets; flowers all opening or some cleistogamous; annual, rarely biennial; plants often not self-supporting, but climbing or sprawling 12. Only stem base and inflorescence hairy; upper fruit chamber indehiscent Not opening inherently to release contents; usually pertaining to fruits. ..... A. coulterianum 14. Flowers cleistogamous and opening; corolla of opening flowers 5–7 mm, white, veins violet ..... A. kingii 14' Flowers all opening; corolla 8–20 mm, white to tan, cream tinged pink, or lavender 15. Corolla lower lip base not swollen, not closing throat, throat floor with 2 longitudinal folds ..... A. ovatum 15' Corolla lower lip base swollen, closing throat, throat floor without folds 16. Corolla white to tan, throat floor expanded at mouth, lower lip lobes reflexed Abruptly bent or curved downward or backward. , poorly developed ..... A. subcordatum 16' Corolla lavender, throat uniformly narrowed, lower lip lobes thrust forward, erect Upright; vertically oriented. or spreading Oriented more or less perpendicularly to the axis of attachment; often, more or less horizontal. , conspicuous ..... A. vexillocalyculatum 17' Proximal stem glandular-hairy, with or without nonglandular hairs; corolla 8–14 mm 18. Branchlets subtending flowers with 1 leaf at proximal-most node Position on a stem from which one or more structures (especially leaves, buds, branches, or flowers) arise. ; KR, NCoR, CaRF ..... subsp. breweri
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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, https://ucjeps.berkeley.edu/eflora/ [accessed on ]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .
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