POACEAE 



I03 



Leaves pubescent. 



Spikelets 2.5 mm. long or less; panicles broad. 



Panicle large and diffuse. 4. P. capillare. 



Panicle small, not occupying over one third of 

 the plant. 

 Spikelets about 2 mm. long; culms stout; 



blades about I cm. wide. 5. P. Gattingeri. 



Spikelets less than 2 mm. long; blades 



Rootstocks wanting. 



Fruiting scale sessile. 



Panicle broad, open, its branches spreading. 



Ligule naked; culms much branched; spikelets 



numerous. 

 Ligule ciliate; culms simple or sparingly 

 branched; spikelets few. 

 Panicles narrow, oblong, dense, its branches erect. 

 Fruiting scale distinctly stalked. 



VII. Dichotoma 



A. Culms simple, or with basal branches and panicles only; 



not fasciculately branched later. 

 Spikelets acute, the second and third scales extending 



beyond the fruiting scale. 

 Spikelets obtuse, the outer scales not exceeding fruiting 

 scale. 

 Secondary panicles present. 

 Secondary panicles wanting. 

 Spikelets less than 2 mm. long. 



Panicle much longer than broad; upper blades 



not smaller than lower ones. 

 Panicle nearly as long as broad; upper blades 

 smaller than lower ones. 

 Spikelets 2 mm. long or more. 



Blades linear, less than 5 mm. wide. 

 Blades linear-lanceolate, 6-10 mm. wide. 

 Panicle narrow, its branches appressed. 

 Panicle broad, open, its branches spreading. 



B. Culms simple only at first, later with fasciculate branches 



at the upper nodes. 



12. P. agrostoides. 



14. P. longifolinm. 



13. P. condensum. 



15. P. stipilatum. 



16. P. de pauper at um. 



17. P. linearifolium. 



23. P. polyanthes. 

 22. P. sphaerocarpon. 



18. P. Werneri. 



54. P. xanthophysum. 



19. P. Bicknellii. 



