302 GRAMINEjE. [Poa. 



fibrous. Br. FL ed. 3. p. 42. E. Fl. v. i. p. 107. E. Bot. 

 t. 1169. 



Meadows, pastures, and woods, common. Fl. June, July. !{.. — 

 Much resembling the last in general appearance, but clothed with a 

 softer and more abundant pubescence. This is the White Hay-seed of 

 the shops, much in demand for sowing in low meadows. 



12. Arrhenatherum. Beauv. Oat-like-grass. 



Panicle lax. Calyx of two valves, 2-flowered ; lowermost 

 floret with stamens only and a long twisted awn above the base, 

 upper one perfect with a short straight bristle below the 

 point. — Named from apptjw, male, and aOrjp, an awn. — This 

 genus has altogether the habit of Avena, from which it differs 

 in the number and structure of its florets. 



Triandria. Digynia. 



1. A. avenaceum, Beauv. Common Oat-like-grass. Br. Fl. 

 ed. 3. p. 42. Lindl. Syn. p. 305. — Holcus avenaceus, Scop. — 

 E. Bot. #.813. E. Fl. v. i. p. 108. — Avena elatior, Linn. 



Hedges and pastures, frequent. Fl. June, July. % . — Roots more 

 or less knotty. Stem two to three feet high. Panicle long, loose. 

 Spikelets greenish-brown. A stout grass, yielding a large crop, but 

 unpalatable to cattle, especially to horses. 



13. Sesleria. Linn. Moor-grass. 



Panicle spiked. Calyx of two valves, nearly equal, somewhat 

 awned. Corolla of two valves, the outer jagged and awned, 

 the inner bidentate. Fruit free. — Named from Leonard Sesler, 

 an Italian Physician and Botanist. 



Triandria. Digynia. 



1. S. ccerulea, Scop. Blue Moor-grass. Panicle spiked, ovate, 

 bracteated ; outer valve of the corolla with one short terminal 

 awn. Br. Fl. ed. 3. p. 42. E. Fl. v. i. p. 114. E. Bot. 

 t. 1613. — Cynosurus cceruleus, Linn. 



Limestone rocks on Ben Bulben and other mountains in the County 

 of Sligo. II. April, May. 2(1. — One of our earliest grasses. Hoots 

 much tufted. Plant nine to eighteen inches high. Leaves linear, 

 obtuse. Spike of a shining bluish grey, with large yellow anthers 

 tipped with purple. Spikelets generally in pairs, oblongo-ovate, the 

 lower ones with an ovate, ciliated, and toothed bractea at the base. 



t f f Calyx three- or, mostly, many -flowered. 



14. Poa. Linn. Meadow-grass. 



Panicle lax. Calyx 2-valved, shorter than the florets. Corolla 

 2-valved, valves subovate, bluntish, awnless. Fruit free. — 



