Asclepias glaucescens Kunth
Family: Apocynaceae
nodding milkweed,  more...
Asclepias glaucescens image
Ries Lindley  
PLANT: Herbs. STEMS: erect, unbranched, 40-80 cm tall, glabrous to rather glaucous. LEAVES: opposite or the bractealleaves subtending the peduncles alternate, sessile, or the petioles to 2 mm long, the blades broadly oblong to ovate-elliptic, 3-16 cm long, (1-)2-7 cm broad, shallowly cordate and more or less clasping at the base, obtuse to rounded at the apex, apiculate, glabrous on both surfaces, glaucous beneath. UMBELS: 1 to several, subterminal at the uppermost nodes, finely pubescent, 5-7 cm broad, the peduncles 3-15 cm long. FLOWERS: large; calyx lobes 5-8 mm long; corolla green or with a touch of purple on the tips outside, tardily reflexed-spreading, the lobes 9-12 mm long; hoods yellowish with white margins, sessile and attached along almost the entire height of the column, ovoid-oblong and more or less -J”-shaped, horizontally spreading-saccate from the base, curved upward near the middle to an erect, truncate apex, ca. 4-5 mm long, 2-4 mm broad at the top, slightly shorter than the gynostegium, the horns radially flat, attached the full length of the hoods, triangular to sickle-shaped, mostly concealed within the hoods; anther wings 2.4-2.8 mm long; corpusculum 0.8-1 mm long, the pollinia 1.1-1.3 mm long. FOLLICLES: erect on deflexed pedicels, 11-15 cm long. NOTES: Canyons, rocky stream beds, open woodlands, mts. of se AZ: Cochise, Gila, Graham, Pima, Santa Cruz, cos.; 1200-2150 m (3900-7100 ft); Jul-Sep; s NM, sw TX; Mex. to Guatemala. REFERENCES: Sundell, Eric. 1994. Asclepiadaceae. J. Ariz. - Nev. Acad. Sci. Volume 27, 169-187.
Asclepias glaucescens image
Ries Lindley  
Asclepias glaucescens image
Asclepias glaucescens image
Ries Lindley  
Asclepias glaucescens image
Ries Lindley  
Asclepias glaucescens image
Ries Lindley  
Asclepias glaucescens image
Ries Lindley  
Asclepias glaucescens image
Asclepias glaucescens image
Asclepias glaucescens image
Asclepias glaucescens image
Asclepias glaucescens image
Asclepias glaucescens image
Asclepias glaucescens image
Asclepias glaucescens image