14 



Tkiisk XII. — Horded'. 



Spikelets one- to many-flowered, usually licrmaphrodite, sessile 

 alonji the loninion racliis, foimiug a simple or toiiipouud sjjike;' 

 irlumes awned or awuless. 



A small tribe of tweuty genera and about one hun- 

 dred and thirty species. It is an important division, 

 however, for it includes rye, barley, and the many vari- 

 etiesof wheat. English and Italian Eye-grasses (io/i«tw 

 species) are the chief meadow grasses of the tribe. 



Nardiis Linn.* .Secale Linn. 



LoliumLinn.* Triticum Liuu. 



Leptnrns R. Br. Hordeiim Linn.* 



Scribneria Hack.* Elymiis Linu.^ 



Agropyron Gaertu. ' Asperella Hnmb.* 



Tribe XIIL — j:<(iiilni»ea'. 



Spikelets two- to niany-flowered (rarely only one-flowered) in 

 racemes or panicles; empty glumes at the base of the spikelet 

 two to several: flowering glumes many-nerved, awuless, or very 

 rarely short-awned; culms woody, at least near the base, and. 

 perennial; leaf blade usually with a short petiole articulated 

 with the sheath from which it finally separates. 



A comparatively small tribe of twenty-three genera 

 and about one hundred and eighty-five species. The 

 sjtecies are confined chiefly to the region within the 

 Tropi(;s. Many of them are of very great importance to 

 the natives of the countries where they grow. Manu- 

 factured articles of bamboo, either of use or for orna- 

 ment, are now a i)art of the commerce of the world. The 

 bamboos are remarkable for their woody stems and often 

 arborescent or tree-like habit of growth, some of the 



' Strictly the spike is simplo when the sessile spikelets are one- 

 flowered, and compound when they are more than one-flowered. 



