44 TRIAND. DIGVIS. 



spikelets of about 5 flowers which are longer than theco/., 

 leaves glabrous finely serrrated, lower ones involute. LightJ. 

 pA05. E.B. tA2iH. 



Hab. Dry mountain pastures about Blair, Dr. Parsons. Fl. July. 11 . 



Remarkable for its short leaves, finely serrated at the margin, the 

 lower ones being complicate and involute ; and for the racemed spike- 

 lets. Receptacle of the flowers very slightly hairy. 



5. A.flavescens {yellow 0«^£[r055), panicle much branched lax, 

 spikelets of about 3 flowers which are longer than the very 

 unequal valves of the cal., root creeping. Light/, p. 1-06. 

 E.B. t. 952. 



Hab. Dry meadows and pastures. Dr. Parsons. Common about 

 Edinb., Mr. Arnott. Fl. July. 1/ . 



The smallest of our ./^rcHiC, about 1 foot high. SpUeele f s numerowfi, 

 small, pale yellow green. Valves of the cal. unequal, ribbed 3 one 

 almost subulate. Receptacle of the florets hairjr. Outer valve of cor. 

 faintly 5 -nerved, with five very short, acuminated points, and an 

 awn about twice its length : hence the genus Trisetum of Pers. 

 27. TRITICUM. 

 * Spike distichous. 



1. fr.junceum (Sea rushy JVheat- grass), valves of the cal. 

 obtuse much ribbed with 4 — 5 awnless flowers, leaves invo- 

 lute pungent, root creeping. Liglitf. p. 109. E. B. t. 814. 



Hab. Sea-coast in sandy places, frequent. Bute ; west coast of Can- 

 tire 5 Oransay and Icolmkill, I./5 /)(/". FZ. July. ■}/. 



Whole plant glaucous, rigid, 1 foot and a half to 3 feet high. Spike 

 long. Spikelets oblong, much compressed^ distant, sessile. Cat. 

 valves oblongo-lanceoiate, often tridentate, Ext. cor. valves similar, 

 with 5 nerves. 



8. Tr. repens (creeping Wheat-grass, Couch-grass), valves of 

 the cal. much nerved with from 4 — 8 awned (rarely awnless) 

 flowers, leaves plane, root creeping. Light/, p. 109. .E. B. 

 t. 909. 



Hab. Fields and waste places every where. Fl. throughout .the sum- 

 mer. 11. 



Height and general aspect of Tr.junceum, but rather more slender, of 

 a glaucous colour only when growing near the sea. Leaves plane, 

 or nearly so. Spikelets smaller, less compressed than in Tr.junc. 

 ■ Cal. and ext. cor. valves 5 -nerved, acute or terminated by an 

 awn of greater or less length. Nerves in the cal. both of this and 

 the former species vary Irom 5 to 9. — Pest of the corn-field, and dif- 

 ficult of extirpation from its long creeping roots. 



3. Tr. caninum [bearded Wheal- grass), valves awned (mostly 

 3-) nerved with about 5 -awned flowers, leaves plane, root fi- 

 brous. LightJ. p. 108 {Ehjrnus can.). E. B. i. 1327. 



Hab. Woods and hedges occasionally about Glasgow, Hopk. Coast^ 

 not rare ; between Caroline Park and Crammond, Edinb., Mr. Gre- 

 ville. Fl. July. 1/. . 



