- 7 - 



greater than 2.0 mm wide; fruits 

 3-3.5 mm wide (fig. 12F) . 

 10. P_^ zoster if ormis 



13. Leaves 3-5-veined (fig. 13F, 15C) , 

 usually less than 2.0 ram wide; 

 fruits less than 3.0 mm wide. 



14. Leaves usually bristle-tipped 

 (figs. 13B,F); occasionally 

 apiculate (fig. 13D) to blunt 

 (fig. 13E) , 3-veined, 1-2.2 

 (-4) mm wide, peduncles slightly 

 clavate, recurved, axillary or 

 terminal, 0.6-1.35 cm long; 

 fruits 3-keeled (fig. 13G) , 3-4 

 mm long. 

 11. P^ hillii 



14. Leaves acute (fig. 14D) , 3 

 (-5)-veined, 0.3-1.5 (2.7) mm 

 wide; peduncles clavate, 

 usually recurved 0.3-1.1 (-3.7) 

 cm long, axillary; fruits 

 1-keeled (fig. 14B) , up to 2.7 

 mm long, usually 1.8-2.3 mm. 

 12. P_;^ foliosus 



12. Nodal glands present (figs. 15D, 16G, 

 18B) . 



15. Stipules coarsely fibrous (figs. 

 15D, 16G) , often whitish. 



16. Leaf tips rounded or apiculate 

 (fig. 15C) ; leaves 5-7 

 (-9)-veined (fig. 15C) ; winter 

 buds with inner leaves at a 

 right angle to outer leaves. 

 13 . P_^ f r iesii 



16. Leaf tips usually bristled (fig. 

 168); leaves acute (figs. 

 16C,D) or rarely obtuse to 

 apiculate (fig. 16E) , 3-5 

 (-7) -veined; winter buds 

 flattened with inner and outer 

 leaves in the same plane. 

 14. P_j_ str ictif olius 



15. Stipules not fibrous, usually 

 delicate (fig. 183), greenish, 

 brown, or white. 



17. Leaves 0.2-3.5 mm wide, apex 

 blunt (fig. 18D) to acute (fig. 

 19F) , 3-5-veined; peduncles 



