364 ASCLEPIADACE^. (MILKWEED FAMILY.) 



long as the peduncle ; corolla deep red ; leaves of the crown oblong, erect, 

 bright orange, more than twice as long as the subulate incun-ed horn and the 

 short-stalked gynostegium ; follicle lanceolate, minutely pubescent. — Marshes, 

 Florida, and northward. June and July. — Stem 2°- 4° high. Leaves 6'- 12' 

 long. Corolla 3"- 4" long. 



11. A. Curassavica, L. Stem somewhat shrubby, branching, slightly 

 pubescent, leafy to the summit ; leaves thin, lanceolate, acuminate, smooth ; 

 umbels corymbose, long-peduncled, 8- 10-flowered, pubescent; pedicels much 

 shorter than the peduncle ; corolla scarlet ; leaves of the crown bright orange, 

 oblong, erect, longer than the stalked gynostegium, shorter than the thick in- 

 curved horn; follicle ovate-lanceolate, velvety. — South Florida. April -Nov. 



— Stem l°-2° high. Leaves 3' -4' long. Corolla 3" long. 



■1- -I- -i- Leaves opposite, ovate or ohlong, more or less cordate, nearly sessile. 



12. A. rubra, L. Smooth ; stem simple, naked at the summit ; leaves 

 ovate or ovate-lanceolate, acuminate, rounded or slightly cordate at the base, 

 very short-petioled ; umbels 1-3, terminal, sessile, few-flowered ; lobes of the 

 corolla lanceolate, acute, reddish-purple ; leaves of the crown oblong, acute, 

 purplish, barely longer than the subulate incurved horn, and twice as long as 

 the short-stalked gyno-^tcgium ; follicle smooth. (A. launfoVia, Michx.) — Wet 

 pine barrens, Georgia, and northward. June- July. — Stem 2° -4° high. Leaves 

 2' -4' long. 



13. A. Obtusifolia, Michx. Smooth and somewhat glaucous ; stem erect ; 

 leaves oblong, undulate, mucronate, cordate and partly clasping at the base ; 

 umbels 1 - 3, lateral and terminal, long-peduncled, many-flowered ; corolla 

 greenish-purple ; leaves of the crown truncated and somewhat toothed at the 

 apex, rather longer than the gynostegium, much shorter than the subulate 

 incurved horn; follicle smootli. — Sandy soil, Florida, and northward. June- 

 July. — Stem 2° - 3° high. Leaves 2' - 3' long, the midrib very broad. Corolla- 

 lobes 3" long. Pedicels pubescent. 



14. A. amplexicaulis, Michx. Smooth and glaucous ; stem declining, 

 veiy leafy ; leaves large, fleshy, ovate, obtuse, cordate and clasping at the base, 

 veined with white; vimbels 3-6, lateral and terminal, many-flowered, the smooth 

 and slender pedicels shorter than the peduncle ; corolla ash-color ; leaves of the 

 crown oval, obtuse, white, longer than the gynostegium, and the nearly straight 

 horn. — Dry sandy pine barrens, Florida to North Carolina. April and May. 



— Stems several, l°-2° long. Leaves 4' -5' long, the midrib broad and 

 prominent. 



+- -t- -I- H- Upper and lower leaves mostlij opposite, the middle ones whorled. 



15. A. quadrifolia, Jaeq. Somewhat pubescent; stem slender, simple ; 

 leaves thin, ovate or ovate-lanceolate, acuminate, contracted into a petiole, pale 

 beneath ; umbels 2-5, many-flowered, the slender peduncle longer than the 

 pedicels ; corolla pale-pink ; leaves of the crown white, oblong, obtuse, twice as 

 long as the gynostegium and stout horn. — Mountains of Carolina, and north- 

 ward. June-Aug. — Stem 1°-1^° high. Leaves 2' -3' long. 



