57. GRAMIXE.E. 



171 



on long, tiliform, hairy, unequal pedicels; empty glumes 4, 



the 2 outer small, unequal, persistant, purplish, keeled, 



acuminate, the 3rcl rather shorter than the 4th, both 



5-nerved, rough, concave, hard 



and shining, tapering into a 



stiff awn and with tuft.s of hair 



at ba.se; flowering glume shorter. 



with a palea of about the same 



length ; stamens 4-6, lodicules 



united, ciliate. 



Adelaide plains and hills. — 

 Sept. -Nov. — South Africa. 



18. Arrhenatherxjm, 



P.B. 



other 



(Greek nrrhfn, male 



awn ; alluding to the awn 

 of the male flower.) 



1. Arrhenatherum av- 



enaceurrii P.B. False Oaf. 

 Tall, erect perennial with flat 

 leaves and. a short, truncate 

 ligule ; panicle 10-30 cm. (4-12 

 in.) long, loose in flower, con- 

 tracted afterwards ; spikelets 

 compressed, 2-flowered, the lower 

 male, the uoper bi.sexual, axis 



terminating 



Ehrharta longiflora. 



Arrhenatherum avena- 

 ceum. 



in a minute bri.stle; 

 outer glumes 2, unequal, mem- 

 liranous, keeled, the upper 

 one as long as the flowers ; 

 male flowering glume with a 

 long bent awn rising from near 

 the base ; fertile flowering glume 

 with or without a minute awn 

 below the top ; grain oblong, 

 downy at .sununit. Arena elatior, 

 L. 



>^outh-Kastern district.- Oct.- 

 Jan. — Euiope; western Asia. 



19. HoLcus, L. 



1. Holcus lanatus, L. 



WooJhj lloUtis, Yorkshire Fog. 

 Erect, softly villous perennial; 

 leaves flat, soft, with a truncate, 

 torn ligule; panicle 8-15 cm. 

 (3-6 in.) long, oblong, downy, 

 varying from light pink to 

 violet ; spikelets crowded, 2- 

 ilowered, the lower bisexual, the 



