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balloonbush, sand snapdragon, viny snapdragon

Habit Annuals 30–120 cm, vines.
Leaves

petiole 14–54 mm;

blade hastate to broadly sagittate, 21–75 × 8–48 mm, surfaces glabrous.

Pedicels

ascending, 3–9 mm, thickened in fruit.

Flowers

sepals 13–18 × 2–4 mm, basally keeled, membranous in flower, 20–32 × 8–12 mm, indurate in fruit;

corolla tube 17–22 mm, glabrous or sparsely hairy, throat open, palate not inflated, abaxial plicae white spotted with blue or violet, lobes: abaxial reflexed, adaxial erect, equal, 7–12 mm;

stamens included, filaments incurved, hairy at base, abaxial 11–13 mm, adaxial 13–15 mm, pollen sacs oblong;

ovary glabrous, locules subequal;

style included, 13–15 mm, indurate in fruit, stigma recurved.

Capsules

ovoid, compressed apically, 11–15 mm, indurate.

Seeds

3–4 mm, surface tuberculate, circumalate.

2n

= 24.

Epixiphium wislizeni

Phenology Flowering Apr–Nov.
Habitat Active and stabilized siliceous and gypseous dunes and sandy soils.
Elevation 1100–2100 m. (3600–6900 ft.)
Distribution
from FNA
AZ; CA; NM; TX; Mexico (Chihuahua)
[WildflowerSearch map]
[BONAP county map]
Discussion

Epixiphium wislizeni is easily identified in fruit and by its occurrence on unconsolidated, sandy soils. When vegetative or in flower, it resembles Maurandella antirrhiniflora. In Texas, E. wislizeni is known from the trans-Pecos region.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 17, p. 21.
Parent taxa Plantaginaceae > Epixiphium
Synonyms Maurandya wislizeni, Asarina wislizeni
Name authority (Engelmann ex A. Gray) Munz: Proc. Calif. Acad. Sci., ser. 4, 15: 380. (1926)
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