74^ FLORA. 



i. Vincetoxicum suberosum (L.) Brftton. Coast Vincetoxicum. (I. F. 

 f. 2931). Stem slender, twining. Leaves thin, 5-13 cm. long, ovate or ovate- 

 oval, acute or abruptly acuminate, the basal sinus shallow, open; petioles 1-5 cm. 

 long; cynics commonly few-flowered; peduncles 6-25 mm. long; pedicels 13-25 

 mm. long, fleshy, nearly glabrous; corolla brown-purple, broadly conic in the bud, 

 its segments lanceolate or ovate-lanceolate, acute, pubescent or granulose within, 

 6-9 mm. long, about twice as long as the calyx; follicles glabrous, 3-5 -angled, when 

 young fleshy, when mature dry and spongy, 10-15 cm. long, 2.5 cm. in diameter 

 or more. In thickets, Va. to Fla. May-July. 



2. Vincetoxicum gonocarpos Walt. Large-leaved Angle-pod. (I. F. f. 

 2932.) Stems slender, climbing high. Leaves broadly ovate, thin, 1-2 dm. long, 

 5-15 cm. wide, acuminate, the basal sinus narrow or the rounded auricles over- 

 lapping; petioles 3-10 cm. long; cymes few-flowered; peduncles 3-8 cm. long; 

 pedicels rather stout, glabrous or nearly so; corolla conic in the bud, its segments 

 lanceolate, 3-4 times as long as the calyx; follicles glabrous, similar to those of the 

 preceding species but usually shorter. Along rivers and in moist thickets, Va. to 

 S. Car., Ind., Mo. and Tex. May-July. 



3. Vincetoxicum hirsutum (Michx.) Britton. Hairy Vincetoxicum. (I. F. 

 f. 2933.) Stem downy, slender. Leaves ovate, acuminate, downy, 5-10 cm. long, 

 3-7 cm. wide, the basal sinus narrow, or the lobes sometimes overlapping; petioles 

 slender, pubescent; peduncles usually about equalling the petioles, sometimes 

 longer; umbels few-several-flowered ; corolla brown-purple to greenish yellow, 

 ovoid in the bud, its segments oblong, very obtuse, 6-9 mm. long, minutely puber- 

 ulent without, about 4 times as long as the densely pubescent calyx ; crown 

 fleshy, the margin 10-crenate; follicles lanceolate, 8- 13 cm. long, muricate, pu- 

 berulent; seeds entire. In thickets, Md. to Fla. and Tenn. July- Aug. 



4. Vincetoxicum obliquuni (Jacq.) Britton. Large-flowered Vincetoxi- 

 cum. (I. F. f. 2934.) Stem puberulent, or hirsute, slender. Leaves pubescent, 

 broadly ovate, acuminate at the apex, 5-20 cm. long, 4-15 cm. wide; basal sinus 

 open or closed; petioles rather stout, pubescent, 2.5-10 cm. long; umbels slen- 

 der- peduncled, few-flowered; pedicels very slender, 2.5-5 cm - l° n g> corolla nar- 

 rowly conic in the bud, red-purple within, greenish and minutely pubescent with- 

 out, its segments elongated-linear, obtuse; crown fleshy, its margin 10-crenulate, 

 the intermediate crenulations sometimes 2-dentate; follicles ovoid-lanceolate, 5-8 

 cm. long, muricate. In thickets, Penn. to Ohio, Va. and Ky. July-Aug. 



5. Vincetoxicum Carolitiense (Jacq.) Britton. Carolina Vincetoxi- 

 cum. (I. F. f. 2935.) Stem hirsute. Leaves broadly ovate, acute or short- 

 acuminate, 8-18 cm. long, 5-14 cm. wide, pubescent, at least beneath; basal sinus 

 narrow or closed; petioles hirsute; peduncles 5-10 cm. long; pedicels very slen- 

 der, 2.5 cm. long or more; corolla brown-purple, oblong-conic in the bud, puberu- 

 lent without, its segments linear-oblong or linear-lanceolate, obtusish, 5-6 times 

 longer than the hirsute calyx; crown scarcely fleshy, 5-lobed, with a subulate 

 longer 2-cleft erect tooth in each sinus; follicles muricate. In thickets, Va. to 

 Mo., S. Car. and La. May-July. 



6. Vincetoxicum Shortii (A. Gray) Britton. Short's Vincetoxicum. (I. F. 

 f. 2936.) Stem pubescent, or hirsute with spreading hairs. Leaves downy. 

 broadly ovate, acute or short-acuminate at the apex, when old with a narrow or 

 closed basal sinus, 10-12 cm. long, 4-14 cm. wide; petioles stout, pubescent; ped- 

 uncles usually longer than the petioles; cymes several-flowered; pediceis 2.5 

 cm. long or more; corolla oblong-conic in the bud. dark crimson-purple, its lobes 

 linear, 11 15 mm. long; calyx hirsute; crown cup-shaped, fleshy, as high as the 

 anthers, its margin about 10-toothed, the alternate teeth thinner and longer, 

 emacginate or 2-parted, the others broader, thicker, with an obscure internal crest 

 or ridge below the summit; follicles warty. In thickets, Penn. to Ky. and Ga. 

 Flowers with the odor of the Strawberry-shrub. June-Aug. 



7. Vincetoxicum Baldwinianum (Sweet) Britton. Baldwin's Vincetoxi- 

 cum. (L F. f. 2937.) Stem pubescent or hirsute. Leaves downy, broadly ovate, 

 acute, or short-acuminate at the apex, 8-15 cm. long, or more; petioles hirsute, 

 2.5-5 cm. long; peduncles usually longer than the pedicels; cymes several-many- 

 flowered; Corolla white. <>r cream-color, the lobes thin, oblong, or becoming spatu- 

 late, 9-1 1 mm. long; crown thin, the 5 broader lobes quadrate, emarginate, or 



