GRAMINEiE. 4^5 



POA. F.B.I. 173 CXVIII. 



Annual or perennial grasses with flat or rolled leaves, 

 and panicles of two to six-flowered spikelets, breaking up 

 between the flowers. Flowering glumes five to seven- 

 nerved, slightly longer than their paleas. 



Species 100, in temperate and cold countries. Britain has 

 8 (common Meadows and Lawn grasses). 



Poa annua Linn. ; F.B.l. vii 345, CXVIII 17. Stem 6 

 to 12 inches, shortly creeping and rooting at the lower 

 nodes, then bent at nodes and erect, slightly compressed, 

 smooth : internodes gradually lengthening upwards. 

 Leaves 2 to 4 by 1/12 to 1/8 inch, smooth. Panicle up 

 to 3J4 inches. Spikelets 1/6 to 1/5 inch. Grain 1/25 

 to 1/12 inch. 



An introduced weed, native of Europe and temperate Asia. 

 Also Himalayas and Khasi hills. Bourne 1911, 3161. 



BROMUS. F.B.L 173 CXXIL 



Annual or perennial grasses with narrow flat leaves 

 and open panicles of long narrow spikelets, with round- 

 backed, five to nine-nerved, awned, flowering glumes. 

 Rachilla jointed between the flower-glumes, and not 

 produced beyond the uppermost. Glumes i and ii 

 persistent, unequal. Grain adherent to the palea. 

 Uppermost flowers often imperfect. 



Species 45, in temperate regions and on tropical mountains. 



Bromus aspcr Murray; F.B.L vii 358, CXXII 2. 

 Stem slender 2 to 3 feet. Leaves very slender, 12 to 18 

 by % to ^ inch. Spikelets about J^ inch : glume i 

 y^, inch; gl. ii longer; flowering glumes ^ to J^ inch, 

 round-backed at the base, scabrid towards the top, with 

 awn about as long. 



