54 Mr. Woods on the Genera of European Grasses. 



36. Ampelodesmus. Spiculae many-flowered, the lowermost perfect, unless 

 when the inner glume is changed into an imperfect floret. Outer glume 

 rather the smallest. Palea with a sub-apiculate awn. Seed crested! 

 Panicle diffuse. 



H. Spiculse scattered, 1 -flowered, without glumes. 



12. Leersla. Palese ribbed, herbaceo-membranous, of equal length, nearly 



valvular ; the outer boat-shaped, unarmed. 

 28. Coleanthus. Palese membrano-scariose. The outer twice as long as the 

 inner, setigerous. Stamens 2. 

 Lygeum. 



I. Spiculse scattered, 1 -flowered, in a spike-like panicle or head. 



19. Achnodon. Spiculse spindle-shaped. Glumes equal, boat-like, unarmed, 



including. Outer palea unarmed, embracing the inner, of equal length, 



20. Phleum. Spiculse oblong. Glumes nearly equal, setigerous, parallel on 



the keel, including 2 unarmed palese. 



21. Alopecurus. Glumes equal, unarmed, generally united at the base! 



Palea 1, the margins in some species united below! Awn dorsal. 



22. Crypsis. Head or spike included in most species in a common involu- 

 crum. Glumes membranous, unarmed. Palese membranous, unarmed, 

 as long as the glumes. 



C. aculeata has only 2 stamens. C. alopecuroides a naked spike. 



23. Gastridium. Glumes ventricose at the base ! including. Palese sca- 

 riose. 



44. Lagurm. Glumes scariose, ending in a long fringed seta. Outer palea 

 quite smooth, ending in two setae, and an intermediate geniculate and 

 twisted dorsal awn. 



1 1 . Lappago. Outer glume scariose ; inner coriaceous and prickly. 

 Polypogon monspeliense and maritimum. 



K. Spiculse 1 -flowered, scattered, in a loose panicle. 



13. Oryza. Glumes small, separate from the floret and from each other. 

 Stamens 6. 



