170 



or. gramtxe.t:. 



palea : authors liairv at summit. Piptaiherum mnJti- 

 fionnn, P.B. 



Ornamental- and pasture-grass, spontaiioons; in places. — 

 Ott.-Feb. Mediterranean region. 



16. Agrostis, L. 



Spikelets small, numerous, compressed laterally ; outer 

 glume.s 2, keeled, 1-nervod, longer 

 hranous flowering glume; grain oblong, 

 inner face. 



lalf as loiiff 



than the mem- 

 furrowed on the 



pa lea 



Panicle loose; 



ing glume 



Panicle more compact 



flowering glume 



as flower- 

 palea as long as 



.1. ull>,i 1 



A. rertici/hifn 2 



1. Agrostis alba., L. Almost glabrous perennial, 

 with stolon-bearing rootstock ; leaves flat, rough downwards 

 along the nerves; ligule long; panicle 5-20 cm. (2-8 in.) 

 long, \"ery loose during (lowering, pale-groen or purplish, 

 the filiform branches naked in the lower part and rough 

 downwards; spikelets 2 mm. 

 long, numerous, on long pedicels, 

 shining, clustered; outer glumes 

 equal, lanceolate; flowering glume 

 a quarter shorter than the outer 

 glume-s. 4-nerved, blunt and 4- 

 toothed at summit ; palea half 

 as long, bifid. 



Near Onkaparinga River. — 

 Oct. - May. — Europe ; temperate 

 Asia. 



2. A. verticiliata, Villars. 

 Resembles the preceding, but 

 the panicle is not so long or so 

 spreading ; spikelets crowded and 

 clothing the branches almost to 

 the base ; outer glumes twice as 

 long as the flowering glume and 

 palea. which are e(iual in length : 

 ligule much shorter. 



Common in moist spots. — Oct.- 

 May. — Mediterranean region. 



Ag^rostis verticiliata. 



17. Ehrharta, Thunberg. 



(After F. Ehrhart, a Swiss botanist.) 



1. Ehrharta longiflora, Sm. Erect annual; 

 leaves rathei- short, flat, rough, the uppermost sheath 

 swollen; ligule .short, jagged, ciliate ; panicle loose, narrow, 

 often 1-sidcd, 7-20 cm. (3-10 in.) long; spikelets clustered 



