Apodanthera undulata var. undulata

Illustrated
Treatment appears in FNA Volume 6. Treatment on page 29.

Vines fetid; branches to 3 m, harshly strigose; tendrils usually branched from 1–5 cm beyond base. Leaves: petiole 3–7 cm; blade 8–15 cm wide, surfaces moderately to densely white-sericeous abaxially, glabrous adaxially. Inflorescences: staminate flowers in long-pedunculate racemes; pistillate flowers in loose fascicles; peduncle erect, 1–2 cm in flower, 6–9 cm in fruit. Flowers: hypanthium 10–18 mm; sepals erect, not recurving. Pepos 6–10 cm. Seeds light brown, 9–12 mm. 2n = 28.


Phenology: Flowering May–Sep.
Habitat: Roadsides, gravelly stream terraces, interfan alluvium, dunes, flats, rocky slopes, lava beds, grasslands, creosote scrub, Chihuahuan desert scrub of Flourensia-Larrea, mesquite, oak chaparral, oak-juniper woodlands
Elevation: 800–1700 m

Distribution

V6 45-distribution-map.jpg

Ariz., N.Mex., Tex., Mexico (Chihuahua, Coahuila, Durango, Sonora).

Discussion

Selected References

None.

Lower Taxa

None.
Guy L. Nesom +
A. Gray +
Ariz. +, N.Mex. +, Tex. +, Mexico (Chihuahua +, Coahuila +, Durango +  and Sonora). +
800–1700 m +
Roadsides, gravelly stream terraces, interfan alluvium, dunes, flats, rocky slopes, lava beds, grasslands, creosote scrub, Chihuahuan desert scrub of Flourensia-Larrea, mesquite, oak chaparral, oak-juniper woodlands +
Flowering May–Sep. +
Smithsonian Contr. Knowl. +
Illustrated +
Apodanthera undulata var. undulata +
Apodanthera undulata +
variety +