ASCLEPIADACE.E. (mILKWEED FAMILY.) 349 



* * Crown leaves spreading, open above, crested heloiu the middle, obtuse : anthers 

 sagittate, membranous above, curving over the gijnostegium. 

 2. A. Feayi. Stem sleuder, 6'- 18' high ; leaves opposite, almost filiform, 

 2' -3' long; umbels 2-3, approximate, few-flowered, the pedicels louger thau 

 the peduncle; flowers white, 3" - 4" long ; crown as long as the sessile gyno- 

 stegium. (Asclepias, Gray.) — South Florida, near the coast. 



6. ENSLENIA, Nutt. 



Calyx 5-parted. Corolla bell-shaped, 5-parted : crown inserted on the 

 base of the gynostegium, 5-leaved, each leaf deeply cleft, with tlie lobes pro- 

 longed into a slender flexuous point. Stigma subcouical. Follicle fusiform. 

 Seeds comose, flat. — A perennial twining vine, with opposite cordate-ovate 

 acuminate leaves, and small white fragrant flowers in axillary umbels or 

 coryml)s. 



1. E. albida, Nutt. — River banks, Georgia, Alabama, and northward. 

 July. 



7. METASTELMA, R.Brown. 



Calyx .5-parted. Corolla bell-shaped, the lobes mostly lioary-pnbescent 

 within. Crown 5-leaved, inserted on the base or on the summit of the gynoste- 

 gium. Stigma flat. Follicles slender, sniooth. Seeds comose. — Twining 

 shrubs, with smooth leaves. Umbels few-flowered. Flowers small, white. 



1. M. Bahamense, Oriseb. Branches pubescent; leaves oblong or 

 obovate, cuspidate, on slender petioles ; peduncles 3 - 6-flowered, as long as the 

 petiole, shorter tlian the pedicels ; sepals obtuse, ciliate ; lobes of the corolla 

 ovate-lanceolate, incurved ; leaves of the crown oblong, inserted on the sum- 

 mit of the slender gynostegium, as long as the stigma. — Soutli Florida. — 

 Leaves ^'- 1|' long, the margins revolute. Corolla 2" long. Gynostegium 

 5-winged at tlie base. 



2. M. Blodgettii, Gray. Herbaceous ? stem very slender, pul)escent 

 in lines ; leaves smooth, linear-lanceolate, falcate, acuminate, short-petioled, 

 drooping; umbels sessile or short-peduncled, 4 -6-flowered; sepals smooth, 

 acute; lobes of the corolla linear, incurved at the apex; leaves of the crown 

 inserted on the base of the sessile gynostegium, linear, erect, exceeding tlie 

 stigma. — South Florida. — Leaves 6" -8" long. Corolla \" long. 



8. SEUTERA, Reich. 



Calyx .'i-parted. Corolla someAvhat wheel-shaped, 5-parted, with narrow 

 acute smooth lobes. Crown siniple, deeply 5-parted, inserted on the base of 

 the sessile conical gynostegium ; the lobes ovate. Follicles smooth. Seeds 

 comose. — A slender partly sbrul)by twining vine, with flesliy linear drooping 

 leaves, and long-peduncled umljels of greenisli flowers. 



I. S. maritima, Decaisne. — Salt marshes. July- August. — Stem 

 shrubby at the Itase ; the branches twining around ruslies and saline grasses. 

 Leaves 2' long. Peduncles commonly longer than the leaves, many-flowered. 

 Lobes of tiie corolla lanceolate, of the crown obtuse. 



