730 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



densely tomentose beneath ; fruit 6 to 8 mm. in diameter, purple. " Parra 

 silvestre" (Tabasco) ; " bejuco de agua " (Oaxaca, Nicaragua, Colombia, Porto 

 Rico) ; "bejuco de cazadores," " pichol " (Oaxaca) ; " uva " (Michoacan, Guer- 

 rero) ; " uvilla cimarrona " (Jalisco, Veracruz); "parra broncadora " 

 (Jalisco); "parra" (Nicaragua, Porto Rico, Santo Domingo, Costa Rica); 

 " agrd " (Costa Rica, Colombia; a corruption of agraz, the name for the 

 wild grape of Spain); "parra cimarrona" (Cuba, Santo Domingo, Porto 

 Rico); "bejuco de parra" (Guatemala); "uva cimarrona" (Nicaragua); 

 "bejuco caro " (Santo Domingo). 



The stems sometimes attain a diameter of 20 cm. From a section of the 

 stem a considerable amount of water may be obtained, a fact of which ad- 

 vantage is often taken by hunters or other persons in forests where the 

 ordinary sources of water are wanting. The sap is reputed to have diuretic 

 properties and a decoction of the leaves has been employed as a remedy for 

 fevers. Descourtilz states that the leaves were applied as poultices for gout. 



It is probably this species to which the names Yitis indica and V. labrusca 

 were applied by Sesse and Mociilo.' 



3. CISSUS L. Sp. PI. 117. 1753. 



Vines, the stems herbaceous or woody ; leaves simple or ternate, usually 

 succulent ; flowers mostly perfect, 4-parted, cymose-corymbose ; ovary 2-celled ; 

 fruit 1 to 4-seeded, usually inedible. 



Leaves simple, entire or dentate, never lobate. 

 Leaves sessile or very short-petiolate, densely soft-pilose beneath. 



1. C. arsenii. 

 Leaves long-petiolate. 



Pedicels densely pubescent 2. C. subtruncata. 



Pedicels glabrous. 

 Leaves broadly cuneate at base, broadest near the apex, nearly entire, 



glabrous 3. C, sinaloae. 



Leaves rounded or cordate at base, broadest at or below the middle, 

 usually conspicuously dentate, glabrous or pubescent. 



4. C. sicyoides. 

 Leaves trifoliolate, or simple and lobate. 

 Flowers green ; leaves very thick and fleshy. 



Leaves deeply 5-lobate 5. C. tuberosa. 



Leaves 3-lobate or trifoliolate 6. C. trifoliata. 



Flowers red ; leaves thin. 



Leaflets glabrous beneath, usually 1.5 to 4 cm. long 7. C. microcarpa. 



Leaflets pubescent beneath, at least along the nerves. 



Flowers 3 to 4 mm. long 8. C. cucurbitina. 



Flowers 1.5 to 2 mm. long. 



Leaflets rounded at apex 9. C. salutaris. 



Leaflets all or mostly abruptly acute or acuminate at apex. 



10. C. rhombifolia. 

 1. Cissus arsenii Standi., sp. no v. 

 Type from Morelia, Michoacan (Arsene 10CK)6; U. S. Nat. Herb. no. 1,001,397). 

 Stems densely puberulent ; petioles stout, 2 to 7 cm. long ; leaves ovate- 

 rhombic, 4 to 6.5 cm. long, obtuse or rounded at apex, broadly cuneate or rounded 

 at base, serrate, green above but densely pubescent ; peduncles 1 to 1.5 cm. long, 

 the cymes dense, few-flowered, 1 to 2 cm. broad; pedicels glabrous; flowers 

 green. 



' PI. Nov. Hisp. 39. 1887. 



