A({l{()STinE.E. 



357 



puren Guud. Agrost. Ilelv. 1:70 (1811). A. effma S. F. (fray, 

 Nat. Arr. Brit. PI. ^: 148 (18^1). 



Culms Jonsoly tuftod, ;U)-(JO cm. high. Ligule 5-7 mm. long; 

 blades on largo plants 15 cm. long, 3-4 mm. wide. Panicle \\h\x 

 its base included or barely exserted above the ui)i)er sheath, usually 

 si)readiug, ;i0-30 cm. long, the scabrid rays in half-whorls of 5-9. 



Fig. 61. — Apera Spica-venti. 

 Spikelct, (iestituto of stamens 

 and pistil. (Ricliunlson.) 



Fig. 63. 



Lagnriis ova- 

 tus. Spikclft. 

 (Kichardsoii.) 



Spikclets narrow, first glumo 1.5-2.5 mm. long, second 2.3-3.:3 mm. 

 long; fertile Horet linear-liniceolate, 2-3.5 mm. long, the awn 

 5-10 mm. long; palea bearing 2 minute tui'ts of hairs at the base. 



Introduced with cultivated gra.sscs and in ballast. 



Var. iXTERuri'TA (L.). A//rosfis inlerrupfa L. 8p. PI. Ed. 2, 

 1:91 (17(13). Apcra infornipfa lieauv. Agrost. 31 (1S13). 



This may be looked for. Plant slender, about 20 cm. high, 

 panicle interrupted, narrow. 10-15 cm. long. 



72. (145). LagurUS L. Sp. PL 1:81 (1753). 



Spikelets 1-ilowered, in a very soft dense ovoid or oblong spike- 



