110 



THE TRUE GRASSES. 



Desf. and P, maritimus Willd. in the Mediterranean re- 

 gion. [Introduced into North 

 America.] 



127. (50) Garnotia Brongn. (M- 

 quelia Nees, Berghausia Endlich). 

 Spikelets small, in pairs along the 

 branches of the usually expanded 

 panicles. Flowering glumes with 

 slender, slightly bent awns, or 

 awnless. 



Species eight, from Eastern 

 India to Japan. 



128. (48) Thurberia Benth. 

 (Greenia Nutt. non Walk, et Arm, 

 Sclerachne Torr. non Brown). 

 Spikelets narrow, solitary along 

 the branches of the panicle. 

 Empty glumes rather hard. Awn 

 of the flowering glume genicu- 

 late, twisted below. 



Species two ( T. Arkansana and 

 T. pilosa), Arkansas and Texas. 



129. (49) Limnas Trin. Pani- 

 cles loose, few-flowered ; all the 



glumes firm in texture ; empty glumes with three prom- 

 inent nerves ; awns dorsal near the base, bent and 

 twisted ; styles connate below. 



Species one (L. Stelleri Trin.), in Eastern Siberia. 



130. (132) Arctagrostis Griseb. Panicles contracted, 

 narrow, few-flowered. Spikelets large (for the tribe), 

 awnless. Flowering glume herbaceo-membranaceous. 



Species one (A. latifolia Griseb.), arctic-circumpolar. 



131. Cinna L. (134) (Abola Adans., Blyttia Fries). 

 Panicles elongated, many-flowered, spikelets small ; 

 flowering glumes with a very short awn just below the 

 point. [Rachilla usually prolonged, naked.] 



Species two, C. pendula Trin. and C. arundinacea L., 

 in Northern Europe and North America. 



132. (129) Agrostis L. Panicles variable, usually dif- 

 fuse and many-flowered ; spikelets small, flowering 



Fig. 52 — Polypogon Mouspeli 

 ensis Desf. (After Nees, Gen 

 Germ., I. 32.) 



