ASCLEPIADACE^ (MILKWEED FAMILY.) 347 



6- 10-flowered; corolla red; leaves of the crown oblong, erect, bright orange, 

 more than twice as long as the subulate incurved horn, and tlie short-stalked 

 gynostegiuni ; follicle lanceolate, minutely pubescent. — Marshes, Florida, and 

 northward. June - July. — Stem 2° - 4° high. Leaves 6' - 1 2' long. Corolla 

 3" -4" long. 



16. A. Curassavica, L. Stem somewhat shrubby, liranching, slightly 

 pubescent ; leaves lanceolate, acuminate, smooth ; umbels corymbose, long- 

 peduncled, 8— 10-flowered, pubescent; corolla scarlet; leaves of the crown 

 bright orange, oblong, erect, longer than the stalked gyuostegium, shorter 

 than the thick incurved horn ; follicle ovate-lanceolate, velvety. — South 

 Florida. April -Nov. — Stem l°-2° high. Leaves 3' -4' long. Corolla 

 3" long. 



17. A. perennis, Walt. Stem branched, pubescent in lines, shrubby at 

 the base; leaves thin, lanceolate or oblong-lanceolate, tapering at each end; 

 umbels 5-7, loug-peduncled, pubescent, the upper corymbose; corolla small, 

 white; leaves of the crown spreading, half as long as the needle-shaped, erect 

 horn; follicle ovate-lanceolate, smooth. — Muddy banks of rivers, Florida to 

 South Carolina. June- August. — Stem l°-2° high. Leaves 2'— 4' long. 



4- -t- -i- -1- Ljijier and lower leaves mostly opposite, the middle ones whorled. 



18. A. quadrifolia, Jacq. Somewhat pubescent ; stem slender, simple ; 

 leaves thin, ovate or ovate-lanceolate; umbels 2 — 5, many-flowered; corolla 

 pale pink ; leaves of the crown white, oblong, obtuse, twice as long as the 

 gyuostegium and stent horn. — Mountains of Carolina and Georgia. June- 

 August. — Stem 1°- H° high. Leaves 2'-3' long. 



19. A. verticillata, L. Stem slender, branching, pubescent; leaves 

 narrowly linear, witii tiie margins revolute, 4-5 in a whorl; umbels several; 

 corolla greenish ; leaves of the crown white, roundish, half as long as the 

 slender incurved horn. — Open woods and fence-rows. July- Sept. — Stem 

 2°-3°high. Leaves 1'- 2' long. Follicle smooth. 



-1- -1- -f- -I- -K- Leaves alternate, or the lowest opjwslte. 



20. A. tuberosa, L. Hirsute; stem erect or declining, widely branched 

 above, very leafy ; leaves from linear to oblong, short-petioled ; umliels nu- 

 merous, corymbose ; corolla yellowish orange ; leaves of the crown bright 

 orange, erect, oblong-lanceolate, twice as long as the gyuostegium, and rather 

 longer than the slender incurved horn. — Light dry soil, common. June- 

 July. — Stem l°-2°long. 



21. A. angustifolia, Ell. Pubescent; stems several, prostrate ; leaves 

 linear, erect, tlie lower ones mo.stly opposite ; umbels 1-3, terminal ; flowei's 

 gray and purjde ; leaves of the crown ovate, spreading, as long as the subu- 

 late horn, and longer than the gyuostegium ; follicle long, linear-lanceolate, 

 tomentose. — Low sandy pine barrens, Florida to South Carolina. April - 

 May. — Stems 6' - 12' long. Leaves 3' - 4' long. Follicle 4' - 5' long. Flow- 

 ers fragrant. 



2. ACERATES, EU. 



Leaves of the crown destitute of a horn-like appendage. Otherwise like 

 Asclepias. 



