148 89. Agrostis. 10. GRAMlNEiE. PLend.pJt. 



Root creeping; culm 18 in. high, smooth, branchy at 

 bottom; ligula very shortly truncated; panicle oblong, be- 

 coming pyraraidical ; peduncles rather long, naked ; locustce 

 pale. 



/3. pumila. Culms in bundles, 2 in. high ; cariopsis long, 

 covered with a dust (ustiiago?) 



Agrostis vulgaris y; var. Smith Fl. Brit. 80. 



.3. Agrostis pnhescens. Downy fionn. 



SpaUielles nearly equal, pubescent, tip of the outer spa- 

 thelle serrate, of the inner smooth ; panicle contracted ; pe- 

 duncles short ; locustce lanceolate, crowded ; awn short : 

 culm branchy, upright. 



Agrostis stoloniferaj var. Smith Fl. Brit. 81. 



Fields and pastures ; perennial ; July, August. 



XLIX. 90. A PER A. Adanson. Silk-grasi. 



Spathelles alternate, nearly equal, rather longer than the 

 spathellules ; loiver spathellule not nicked at the tip, bristled 

 below the tip ; 7ipper g-cut, toothed ; lodicule lanceolate, 

 not nicked, bald; stamens 1 or 3; style short, 2-parted; 

 stigmata villous ; cariopsis free, husked, not furrowed. — 

 Paw/t/e branched, large. 



1. Apera effusa. Large-panicled si Ik- grass. 

 Panicle spreading, rather 1-sided, manyflowered ; shorter 



peduncles crowded with flowers ; longer naked at bottom ; 

 leaves smooth; culm upright; aivn 5 times as long as the 

 spathellules. 



Gramen mUiaceum majus, glumis arislatis, spadiccis e{ pallidis, Rati 

 Sj/n. 405, 17. 



Gramen arundinaceum, Ger, cm. 5. 

 Grameii agrorum spica venti, Park, 1158. 

 Agrostis Spica venti, Lin. S. P. 91, 

 Apera Spica venti, Palis, de Beauvois. 



Corn-fields in moist sandy soils; annual ; June and July. 



Root fibrous ; culm smooth, 3 feet high ; leaves rather 

 smooth ; sheaths smooth ; ligula torn ; panicle very large ; 

 locustce minute, green or yellowish. 



2. Apera P palustris. Marsh silk-grass. 

 Panicle spreading, manyflowered ; shorter pedu7iclcs 



crowded with flowrets; longer naked at bottom ; own shorter 

 than the spathellules; culm creeping, taking root; leaves 

 rough. 



