ASCLEPIADACE^E. (MILKWEED FAMILY.) 363 



5. A. incarnata, L., var. pulchra. Hairy ; stem erect, branching ; 

 leaves oblong or oblong-lanceolate, acute, nearly sessile ; umbels numerous, 

 somewhat corymbose, long-pcduncled, often compound ; pedicels erect, much 

 shorter than the peduncle; corolla small, reddish-purple; leaves of the crown 

 flesh-color, ovate, as long as the slender incurved horns, and twice as long as the 

 short-stalked gynostegium. (A. pulchra, Willd.) — Swamps in the upper dis- 

 tricts, Georgia, and northward. • June and July. — Stem 3° - 4° high. Leaves 

 4' - 6' long. 



6. A. tomentosa, Ell. Pubescent or villous ; stem stout, very leafy ; 

 leaves oblong or oblong-lanceolate, cuspidate, undulate, somewhat hoary beneath, 

 abruptly short-petiolcd ; umbels 4- 10, alternate, nearly sessile, many-flowered ; 

 pedicels three times as long as the large greenish corolla; leaves of the crown 

 obovate, truncated, shorter than the gynostegium and the broad abruptly pointed 

 erect horn. (A. aceratoides, M. A. Curtis.) — Dry sandy pine barrens, Florida 

 to North Carolina. June and July. — Stem l°-4° high. Leaves 2' -3' long, 

 thick, on rather slender petioles. Pedicels 1 ' long. Corolla |* wide. Follicles 

 lanceolate, tomentose, 4'- 6' long. 



7. A. obovata, Ell. Tomentose; stem stout, very leafy; leaves thick, 

 oblong-oval or obovate, cuspidate, undulate; the midrib, like the short (2" long) 

 petiole, very thick and prominent ; umbels nearly sessile, closely 10 - 14-flowered ; 

 the stout pedicels barely twice as long as the large yellowish-green corolla ; 

 leaves of the crown purplish, twice as long as the gynostegium, and equalling 

 the incurved horn ; follicle tomentose. — Dry gravelly or sandy soil, Georgia, 

 Florida, and westward. June and July. — Stem l°-2° high. Leaves and 

 flowers as large as those of the preceding. 



*- +- Leaves opposite, lanceolate or linear, narrowed into a petiole. 



8. A. cinerea, Walt. Stems erect, slender, pubescent in lines ; leaves 

 long, narrowly linear, distant, spreading; umbels 3-6, commonly longer than the 

 leaves, 5 - 7-flowered, the slender drooping pedicels longer than the peduncle; 

 flowers small, purple without, ash-color within ; leaves of the crown obliquely 

 truncated, 2-toothcd at the inner angle, shorter than the gynostegium, longer than 

 the thick horn; follicle smooth, linear. — Flat sandy pine barrens, Florida to 

 South Carolina. June -Aug. — Stem l°-2° high. Leaves 2' -3' long, 1" 

 wide, somewhat glaucous; the uppermost often minute. Corolla 3" -4" wide. 

 Follicle 3' -4' long. 



( J- A. viridula, n. sp. Stem slender, pubescent in lines ; leaves linear, 

 Is shorter than the leaves, 6- 12-flowcred, the erect or spreading 

 pedicels as long as the peduncle; corolla small, yellowish-green ; leaves of the 

 crown oblong, spreading at the apex, rather longer than the erect subulate horn, 

 and twice as long as the gynostegium ; follicle smooth, linear. — Pine-barren 

 swamps, West Florida. June and July. — Stem 10' - 15' high. Leaves 2' long. 

 Corolla 3" wide. Follicle 3' long. 



10. A. paupercula, Michx. Stem smooth, tall; leaves elongated, linear 

 or linear-lanceolate, acuminate, rough-margined, the upper ones small and re- 

 mote ; umbels 2-5, corymbose, G - 10-flowcrcd : pedicels pubescent, about as 



