88. GRAMINE.E. 193 



B. Lower glumella bifid. 



4. A. CARYOPHf LLEA, L. Silvery Hair-grass. Stems tufted, 

 erect, 6 8 in. high. Le. very slender, short and narrow. 

 Panicle erect, loose, spreading; branches 3-forked; spikelets 

 clustering towards the apex, silvery grey. Awn longer than the 

 glumella, arising from a little beneath the middle. 



Frequent. Gravelly places and pastures. (B) A. 6 7. Possil road; Paisley 

 Canal bank; sand hills, Tollcross; Bowling, &c. 



5. A. PR^E'COX, L. Early Hair-grass. Stems tufted, 2 4 in. 

 high, erect. Le. short, very fine, setaceous; sheaths slightly 

 inflated. Panicle very small, close, seldom more than an inch 

 long; spikelets few, acute at the base, pale silvery green. Awn 

 arising from a little above the base, longer than the glumes. 



Frequent. Sandy hills and gravelly places. (B) A. 5 6. Tollcross and 

 Gourock. 



16. ARRHENATH^RUM. False Oat-grass. 



A. AVENACEUM, Beauv. Root fibrous and slightly knotted. 

 Stem erect, 2 3 ft. high, nodes smooth. Le. few, flat, roughish. 

 Panicle loose, 6 8 in. long, lower branches rising from the rachis 

 in fives. Awn long, twisted and geniculate, from a little above 

 the base of the outer glumella. 



Var. bulbosum. Stem with large bulbs at the base, nodes 

 downy. 



Common. In hedges and pastures. (B) P. 67. Banks of the Kelvin ; Lang- 

 side wood, &c. 



17. AVENA. Oat, Oat-grass. 



1. A. FATUA, L. Wild-Oat Haver. Stem erect, 23 ft. [high. 

 Le. flat, linear, lanceolate; ligule obtuse or emarginate. Panicle 

 erect, few-flowered; spikelets penduluous. Gl. membranous, many- 

 ribbed. Glumellas acute, outer one with several reddish brown 

 hairs at the base. Awns long and twisted, abruptly bent^ about 

 the middle. 



Very rare. Corn fields. (B) A. 68. Near Uddingston. 



2. A. STRIGOSA, Schreb. Bristle-pointed Oat. Very like the 

 common oat. Branches of the panicle secund ; glumellas ending 

 in bristles or short awns; considered by many as a degenerate form 

 of the common oat. 



Frequent. In corn fields. A. 6 7. Tollcross; Gadder; Cathcart; plentiful in 

 Bute, Cumbrae, and Arran. 



3. A. PRATENSIS, L. Narroiv -leaved Oat. Rhizome tufted. 

 Le. often scabrous on the surface, involute. Spikelets 3 5, fl. 

 Panicle slightly compound, often simple and lax. Glumes with 

 few nerves ; lower floret not so long as the large glume. 



Dry pastures and heathy mountainous places; hills above Largs and Fairlie 

 Arran. (B) P. 67. 



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