Flora of North America species comparison

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Sairocarpus subcordatus

dimorphic snapdragon
Habit Annuals.
Stems

8–90 cm, not self-supporting, hairy;

branches twining.
Leaves

opposite proximally, alternate distally;

blade ovate, 10–60 × 5–45 mm, surfaces glabrous, glandular-hairy, or eglandular-hairy.
Inflorescences

axillary, racemes or flowers solitary.
Pedicels

1–3 mm.
Flowers

chasmogamous;

calyx lobes unequal, hairy or glandular-hairy, adaxial lobe 8–14 × 5–10 mm;

corolla white to tan, 13–17 mm, base gibbous, mouth 2.5–3.5 mm diam., palate not veined, slightly 2-lobed, 5–9 mm diam., tomentose.
Capsules

narrowly ovoid, 5–6 mm, glandular-hairy, abaxial locule with 1 pore.
Seeds

dark brown to black, 1 mm, tuberculate, reticulate-ridged.
2n

= 30.

Sairocarpus subcordatus
Phenology Flowering May–Jun.
Habitat Open slopes on serpentine, under shrubs.
Elevation 150–800 m. (500–2600 ft.)
Distribution
from FNA
CA
[BONAP county map]
Discussion

Sairocarpus subcordatus is similar to S. vexillocalyculatus; it has relatively broader leaves and white to tan corollas with abaxial lobes reflexed. The species is known from the northern and central Inner North Coast Ranges.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 47.
Parent taxa Plantaginaceae > Sairocarpus
Sibling taxa
S. cornutus, S. coulterianus, S. kingii, S. multiflorus, S. nuttallianus, S. vexillocalyculatus, S. virga, S. watsonii
Synonyms Antirrhinum subcordatum
Name authority (A. Gray) D. A. Sutton: Revis. Antirrhineae, 477. (1988)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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