52 



Ranunculaceae. 



tralblatt, 26:10. C.vitalba 

 Willkomm, 7. G. viticella. 

 1 



Clematis. Virgin's Bower. 

 (Family Ranunculaceae). 



Soft-wooded climbers. Shoots 

 6- or 12-angled over the vascular 

 bundles, with cavities in the cor- 

 tex under the ridges, straw-colored 

 or brown: pith angled or star- 

 shaped, white, continuous with 

 thin firmer diaphragms at the 

 nodes, or said to be excavated be- 

 tween them in G. Vitalba. Buds 

 rather small, ovoid or flattened, 

 sessile, solitary, or superposed in 

 G. recta, with 1-3 pairs of exposed 

 somewhat hairy scales. Leaves 

 not disarticulating, though dying, 

 with prehensile petioles or petiol- 

 ules: no stipules or stipule-scars. 



Winter-character references: 

 C. japonica. Shirasawa, 281, pi. 12. 

 G. recta. Velenovsky (paper on 

 superposed buds published at 

 Prag in 1884) Botanisches Cen- 

 Bosemann, 40; Schneider, f. 121; 



Bosemann, 40. 

 2. 



Stem glaucous and glabrous 



Stem not glaucous. 3. 



Stem 6-sided, brown. 



Stem 6-ridged, gray. 



Stem straw-colored, 12- or 18-ridged 



Stem brown, the 6 primary ridges stronger. 4. 



Stem glabrate. ( 3 ) . x c - Jackmanni. 



Stem more or less hairy. 5. 



Finely pubescent. (4). C. virginiana. 



Rather woolly at the nodes. C. Pitcheri. 



(1). C. verticillaris. 



C. texensis. 



(2). C. paniculata. 



