ch. *vv] Key to Floral Characters 37 



Milium (p. 118). 

 Agrostis vulgaris (p. 56). 

 A. alba (p. 54) (sometimes has basal awn). 

 2. At least two perfect flowers in each spiTcelet. 



(a) With awns or awn-points to outer palece, which are : 

 Terminal in Festuca (p. 99). 



F. ovina and vars. (p. 101), leaves permanently 



closed. 

 F. elatior (p. 99). Leaves expanded. Spikelets 



5-10 flowered. 

 F. sylvatica (p. 104). Leaves expanded. Spikelets 



3-5 flowered. 

 Arundo Phragmites (p. 66), panicle large and 

 silky; spikelets 3-nowered. 

 Sub-terminal in Bromus (p. 79 J. 



B. arvensis and vars. (pp. 79-82), O.P. broad. 

 B. sterilis (p. 82), panicle drooping; O.P. 



narrow and long; awn longer than O.P. 

 B. asper (p. 85), panicle drooping; awn shorter 

 than the O.P. Shade species. 

 Dorsal or Basal in: 



Avena (p. 68), awns bent, long, and conspicuous. 

 Aira (p. 56), awns fine, not conspicuous. 



(b) Outer palece without awns or awn-points. 



Poa (p. 122), spikelets with 2-7 flowers; O.P. less 

 than 4 mm. long. 



P. annua (p. 122), "web" wanting; spikelets 

 4-7 flowered. 



P. pratensh (p. 127), O.P. 5-nerved, the" 

 marginal nerves hairy below ; spike- 

 lets 3-5 flowered. "Web" 



P. compressa (p. 123), O.P. 3-nerved, of 

 spikelets 4-7 flowered. hairs 



P. trivialis (p. 129), O.P. 5-nerved, the >■ at 



marginal nerves free from hairs; 

 spikelets 2-5 flowered. 

 nemoralis (p. 125), O.P. 5-nerved, 

 both dorsal and marginal nerves 

 hairy below; spikelets 3-5 flowered ^ 



base 



of 

 palea? 



