Sairocarpus nuttallianus |
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Nuttall's snapdragon, violet snapdragon |
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Habit | Annuals, rarely biennials. |
Stems | 6–200 cm, not self-supporting, glandular-hairy; branches twining. |
Leaves | opposite proximally, alternate distally; blade ovate, 2–60 × 1–50 mm, surfaces glandular-hairy. |
Inflorescences | axillary, flowers solitary. |
Pedicels | 2–20(–25) mm. |
Flowers | cleistogamous and chasmogamous; calyx lobes equal, glandular-hairy, adaxial lobe 3–6 × 1–3.5 mm; corolla pale purple to purple, sometimes dark-veined, 7–12 mm, base slightly gibbous, mouth 2.5–3.5 mm diam., palate white, purple-veined, rounded, 2.5–6 mm diam., puberulent. |
Capsules | ovoid, 3–11 mm, glandular-hairy, abaxial locule with 1 pore. |
Seeds | brown, 0.5–1 mm, ridged longitudinally. |
2n | = 32. |
Sairocarpus nuttallianus |
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Phenology | Flowering Mar–Aug. |
Habitat | Stabilized coastal dunes, rocky or disturbed areas. |
Elevation | 0–1300 m. (0–4300 ft.) |
Distribution |
AZ; CA; Mexico (Baja California, Baja California Sur, Sonora)
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Discussion | Plants of Sairocarpus nuttallianus are unique in having gold-colored hairs in the mouth of the corolla. D. M. Thompson (1988) recognized two intergrading subspecies based on degree of hairiness and slight differences in seed sculpturing, but the differences are minor and inconsistent. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 46. |
Parent taxa | Plantaginaceae > Sairocarpus |
Sibling taxa | |
Synonyms | Antirrhinum nuttallianum, A. nuttallianum subsp. subsessile, A. nuttallianum var. subsessile, A. pusillum, A. subsessile, S. pusillus |
Name authority | (Bentham ex A. de Candolle) D. A. Sutton: Revis. Antirrhineae, 464. (1988) |
Web links |