Dave's Garden
provided by EOL authors
Image from Grey Forest, Tx
Ladybird Johnson Wildflower Plant Database
provided by EOL authors
Images and links to USDA Plants and additional Google Images.
Comprehensive Description
provided by North American Flora
Macrosiphonia macrosiphon (Torr.) A. Heller,
Muhlenbergia 1:2. 1900.
Echites macrosiphon Torr. Bot. Mex. Bound. Surv. 158. 1859. Macrosiphonia Berlandieri A. Gray, Syn. Fl. N. Am. 2^: 83. 1878.
Erect or somewhat diffuse suffrutescent herb, 1.5-3 dm. tall; leaves ovate-elliptic to suborbicular, 1.5-5 cm. long, 1-4.5 cm. broad, at the apex abruptly obtuse or rounded, or infrequently acute to somewhat retuse and mucronulate, obtuse or rounded at the base, densely tomentulose on both sides, the petioles 2-10 mm, long; inflorescence bearing a solitary, showy, white, vespertine flower, the peduncle obsolete or essentially so; pedicel 2-5 mm. long; calyxlobes lanceolate to ovate, acute to acuminate, 10-20 mm. long, 2-5 mm. broad, conspicuously foliaceous, densely tomentulose; corolla infundibuliform, densely puberulent-papillate externally, the tube proper 35-90 mm. long, about 1.5 mm. in diameter at the base, the throat narrowly conic to subtubular, 10-25 mm. long, 5-7 mm. in diameter at the orifice, the lobes obliquely obovate, 15-30 mm. long, spreading; follicles relatively slender, continuous, 10-15 cm. long, puberulent-papillate to glabrate.
Type IvOCALITy: Texas.
Distribution: Texas, Chihuahua, and Durango.
- bibliographic citation
- Robert Everard Woodson, Jr. 1938. (ASCLEPIADALES); APOCYNACEAE. North American flora. vol 29(2). New York Botanical Garden, New York, NY
