VlTACEAE. 



223 



Cissus. Marine Ivy. 

 (Family Vitaceae). 



Soft-wooded or rather succulent 

 climbers with simple coiling tend- 

 rils opposite the leaf-scars: decidu- 

 ous. Stems subterete, moderate 

 or rather slender: pith rounded, 

 moderate, white, continuous and 

 without nodal diaphragms. Buds 

 small, collaterally branching, 

 globose, sessile, with 2 scales. 

 Leaf-scars alternate, 2 - ranked, 

 rounded: bundle-traces indistinct, 

 in an ellipse: stipule-scars small. 

 Sometimes included in Ampelop- 

 sis as now denned. 



A still tenderer specias than 

 C. incisa is C. acida, which is 

 cultivated in the open sometimes. 

 The beautiful C. discolor, some- 

 times called trailing begonia, is 

 familiar in hot-houses every- 

 where. 



Glabrous or puberulent: internodes short (2-3 cm.). C. incisa. 

 Winter-character references to Vitis: V. cinerea. Hitch- 

 cock (3), 10. V. cordifolia. Engelmann, Bushberg Catalogue, 

 10, f. 36; Hitchcock (3), 6. V. flexuosa. Shirasawa, 260, pi. 

 7. V. labrusca. Engelmann, Bushberg Catalogue, 9. V. ro- 

 tundifolia (V. vulpina). Engelmann, Bushberg Catalogue, 10, 

 f. 37. V. rupestris. Engelmann, Bushberg Catalogue, 10, f. 

 35. V. Thunbergii. Shirasawa, 261. V. vinifera. Schneider, 

 f. 122; Shirasawa, 260, pi. 7. V. vulpina (V. riparia). Bren- 

 del, 27, pi. 4; Engelmann, Bushberg Catalogue, 10, f. 34; 

 Hitchcock (3), 10, (4), 135, f. 19-20. 



