ch. vi] Key to Grass "Seeds" 41 



1 Agropyrum repens var. aristata, O.P. with 

 a distinct and one-sided keel (p. 51). 

 (&) "Seed" not flattened, rather cylindrical or tri- 

 angular in transverse section, narrowing 

 below and tapering off above. 



Festuca Myurus (Fig. 99), O.P. 5-6 mm. long 

 bearing an awn two or three times that 

 length (p. 100). 



F. ovina var. duriuscula (Fig. 106) (p. 102), 

 O.P. about 4-5 mm. long, with an awn 

 — or awn-point — usually half as long 

 as itself. 



F. ovina var. vulgaris (Fig. 102), O.P. 3-4 mm. 

 long with awn-point usually less than 

 half as long (p. 101). 



[Arundo Phragmites (may come here), O.P. 10- 

 12 mm. long, including its very long 

 awn-like point; rachilla covered with 

 long silky hairs (p. 66). 



Dactylis glomerata (Fig. 88) (awned specimens 

 would come here), see p. 93. 



Nardus stricta (Fig. 131) (may come here), see 

 p. 119. 



Cynosurus echinatus (may come here), rare, 

 see p. 93.] 

 B. Awn sub-terminal, i.e. arising immediately but distinctly 



below the apex of the O.P. 



1. Awn exceeding twice the length of the O.P. 



Agrostis Spica-venti (Fig. 37), O.P. 2-2-5 mm. long 

 (p. 56). 



2. Awn from about \ to f the length of the O.P. 



Bromus sterilis (Fig. 74), O.P. from 14 to 20 mm. 



long. "Seed" very slender (p. 82). 

 Lolium temulentum (Fig. 125), O.P. about 6 or 



7 mm. long. "Seed" very stout. 



3. Awn usually not exceeding the length of the O.P. 



Bromus mollis (Fig. 72), O.P. 7-12 mm. long, broad, 



1 See footnote on previous page. 



