Sairocarpus watsonii
Sairocarpus virga
Watson's snapdragon
tall snapdragon, twig-like snapdragon
8–85 cm, not self-supporting, basally hairy, otherwise glabrous;
branches twining.
40–220 cm, self-supporting, glabrous;
branches not twining.
opposite proximally, alternate distally;
blade linear, 5–55 × 1–4 mm, surfaces glabrous.
alternate;
blade linear, 50–120 × 3–10 mm, surfaces glabrous.
axillary, flowers solitary.
terminal, racemes.
4–25(–30) mm.
2–6 mm.
cleistogamous and chasmogamous;
calyx lobes equal, glandular-hairy, adaxial lobe 2.5–4 × 1–1.5 mm;
corolla light purple, purple-veined, 5.5–7 mm, base barely gibbous, mouth 2–2.5 mm diam., palate purple-veined, angular, 2.5–4 mm diam., minutely papillate.
chasmogamous;
calyx lobes equal, glabrous, adaxial lobe 6–8 × 1.5–2.5 mm;
corolla pink to pale pink, 13–18 mm, base gibbous, mouth 3–5 mm diam., palate not veined, rounded, 5–7.5 mm diam., puberulent.
globular-ovoid, 2.5–6 mm, glandular-hairy, abaxial locule with 1 pore.
globular-ovoid, 7–9 mm, glabrous, abaxial locule with 2 pores.
black, 0.6–1 mm, tuberculate.
black, 1–1.5 mm, ridges reticulate.
= 30.
= 32.
Sairocarpus watsonii
Sairocarpus virga
The only North American collections of Sairocarpus watsonii are from Organ Pipe National Monument in Pima County. Sairocarpus watsonii is similar to S. kingii, which grows farther north and has unequal sepals.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Stems of Sairocarpus virga regrow quickly after fires (D. M. Thompson 1988).
Sairocarpus virga is known from the southern High and Inner North Coast ranges.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
WildflowerSearch
iNaturalist
USDA Plants Database
CA
