ABALIACEAE. 



259 



ACANTHOPANAX. 



(Family Araliaceae). 



Shrubs or exceptionally trees, 

 usually armed with 1 to 3 prickles 

 beneath each narrow leaf-scar and 

 so likely to be mistaken for leaf- 

 spines: deciduous. Twigs mode- 

 rate, terete; somewhat zig-zag, 

 often forming spurs: pith mode- 

 rate, rounded, continuous, white. 

 Buds solitary, sessile, conical- 

 ovoid, with about 3 exposed thin 

 scales. Leaf-scars alternate, nar- 

 rowly crescent-shaped or U-shaped, 

 somewhat raised: bundle-traces 5, 

 small: stipule-scars lacking. Panax 

 and its compounds, following Lin- 

 naeus, are treated usually as 

 neuter for no classical reason. 

 1. Scrambling or climbing. 



A. trifoliatum. 

 Bushy or arboreous. 2. 



2. Trees: prickly between nodes. (Kalopanax). A. ricinifolium. 

 Loosely branched shrubs. 3. 



3. One or two prickles at each node. (1). A. pentaphyllum. 

 Essentially unarmed. A. sessiliflorum. 

 Prickly between the nodes. 4. 



4. Prickles slender, numerous. 



(Eleutherococcus) . A. senticosum. 

 Prickles stout and strong, fewer. 5. 



5. Glabrous and smooth. A. Simonii. 

 Twigs pubescent or scabrous. A. Henryi. 



