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), Mexico (Coahuila), Mexico (Durango), Mexico (Sonora)

Discussion

Selected References

None.

Lower Taxa

None.
distinct +  and connate +
Guy L. Nesom +
A. Gray +
light-colored +
reniform;orbiculate-cordate unlobed or shallowly palmately 5-lobed +
8cm;15cm +
filiform-subulate +
tubular +, saucer--shaped +, campanulate +  and rotate +
Ariz. +, N.Mex. +, Tex. +, Mexico (Chihuahua) +, Mexico (Coahuila) +, Mexico (Durango) +  and Mexico (Sonora) +
800–1700 m +
furrowed +  and echinate +
dehiscent +  and indehiscent +
bristly +, smooth +, hairy +  and glabrous +
tuberculate +  and muricate +
fleshy +  and hard +
pistillate +  and staminate +
silvery green +  and green with darker +
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 +
perennial +
dioecious +  and monoecious +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
umbellate;subumbellate +
solitary +, corymbose +, fasciculate +, racemose +  and paniculate +
petiolate +, estipulate +  and simple +
rounded +
undulate-crisped +
ovoid;oblong +
6 cm60 mm <br />0.06 m <br /> (9 cm90 mm <br />0.09 m <br />) +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
induplicate-valvate +  and imbricate +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
distinct +
1.6 cm16 mm <br />0.016 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Flowering May–Sep. +
Smithsonian Contr. Knowl. +
long-pedunculate +
not arillate +
biconvex +  and ellipsoid-obovoid +
not recurving +  and erect +
Illustrated +
climbing +  and procumbent +
sprawling +  and prostrate +
ribbed +  and smooth +
indehiscent +
short-columnar +
glabrous +  and white-sericeous +
Apodanthera undulata var. undulata +
Apodanthera undulata +
variety +
distinct +
oblong +  and suborbiculate +