430 VITACE^. Cissus. 



southwards in the Alleghany region and highlands to West-central Georgia. Not known to 

 occur west of E. New York in the North, but reported from S. Indiana, Munsoti. The parent 

 of the greater part of American cultivated grapes. It is often confounded with V. mstivahs 

 in the South, fiom which it is distinguished by the habitually continuous tendrils, the more 

 felt-like leaves which are not floccose, and especially by the small-toothed leaves, very short 

 clusters and large berries and seeds. 



2. CiSSUS, L.i (Kto-o-os, Greek name of Ivy.)— A vast genus, mainly 

 tropical, of various habit, the typical species 4-merous, some of the 5-merous 

 species near to Vitis. — Amoen. Acad. i. ed. Holm. 389, ed. Lugd. Bat. 115, & 

 Gen. ed. 5, no. 137. Ampelopsis, Rhoicissus, Cissus, etc., Planch, in DC. 

 Monogr. Phauer. v. 453, 463, 470. 



§ 1. Flowers mostly 5-merous and perfect : disk cupulate or at length ex- 



planate, with barely lobed or crenate border, its base coherent with that of the 



ovary : berries soon dry or with scanty pulp, inedible : tendrils in ours few, and 



mostly in the inflorescence : foliage, etc., not fleshy. — Ampelopsis, Raf., Planch., 



and i^artly Michx. 



C. Ampelopsis, Pers. Nearly glabrous, moderately climbing : leaves simple (2 to 4 

 inches long), deltoid-subcordate or with truncate base, acutely serrate, acuminate, some- 

 times tricuspidate by obscure lateral lobes : cupulate disk as high as the ovary and free 

 almost to base: style slender: berries bluish or greenish, mawkish, the size of peas. — Syn. 

 i. 142; Pursh, Fl. i. 170; Torr. Fl. N. & Midd. States, 266. Ampelopsis cordata, Michx. Fl. 

 i. 159 ; DC. Prodr. i. 633 ; Planch. 1. c. 453. A. cordifolia, Raf. Med. Bot. ii. 122. Vitis indi- 

 visa, Willd. Berol. Baum. ii. 538 ; Torr. & Gray, Fl. i. 243. — Banks of streams, Virginia 

 and Ohio to Illinois, south to Florida and Texas ; fl. spring. (Mex.) 



C. stans, Pers. Glabrous or glabrate, erect, rarely with a few tendrils and somewhat 

 climbing: leaves bipinnately compound; pinnte and leaflets about 2 pairs and an odd one; 

 leaflets ovate and cuueate-obovate, iucisely few-toothed : cymes shorter than the leaves : disk 

 shorter than the ovary and largely adnate to it: style conical-subulate: berries dark purple; 

 seeds with a prominent and oval dorsal chalaza. — Syn. i. 143 ; Pursh, 1. c. C. hipinnata, 

 Nutt. Gen. i. 144; Ell. Sk. i. 304. Vitis arhorea, L. Spec. i. 203; Marsh. Arb. 164; Jacq. 

 Hort. Schcenb. iv. 14, t. 428. V. hipinnata, Torr. & Gray, Fl. i. 243 ; Chapm. Fl. 70. Ampe- 

 lopsis bipinnata, Michx. Fl. i. 160; DC. 1. c. ; Planch. 1. c. 461. Hedera arborea, Walt. Car. 

 102. {Cissus orientalis. Lam., is a related species of Asia Minor, with 4-merous flowers.) — 

 Banks of streams, Virginia to S. Illinois and Missouri, S. Florida, and Texas ; fl. summer. 

 (Mex., Cuba.) 



§ 2. Flowers 4-merous and mostly perfect : disk cupulate, united with the base 



of the ovary, the margin 4-lobed : tendrils mostly strong : foliage in ours thick 



or even fleshy (detaching in drying). — Cissus, Planch. 



* Leaves 3-lobed or trifoliolate. 



C. acida, L. A low climber, with slender and striate somewhat succulent branches, glabrous : 

 leaves trifid or trifoliolate ; the leaflets or divisions broad-cuneate and sharp-tootlied on top, 

 rather small : flowers small, in corymb-like or umbel-like clusters : berry ovoid aud mucro- 

 nate, dark purple, with 1 or 2 large seeds, the pedicel recurved at maturity. — Spec. ed. 2, 

 i. 170; DC. Prodr. i. 630; Griseb. Fl. W. Ind. 102 ; Planch. 1. c. 534, in part. Vitis acida, 

 Chapm. Fl. 70. — Key West; also in Arizona, Pringle, no. 371, Lemmon, no. 533. 

 (W. Ind., Mex.) 



C. incisa, Desmoul. Either slender or a strong climber, sometimes reaching 20 to 30 feet, 

 with very fleshy stems, the tendrils sometimes penetrating the support like roots : leaves 



1 § 1 and C. Ampelopsis & stans by A. Gray. 



