FESTUCEAE 133 



annual species of Ihe genus in the State, . occurring mostly in 

 Transition Zone hut cNlciidiiiq' downward -oceassionally. 



4. Eragrostis mexicana Link. A rare species of the moun- 

 tains of the siMitlu'iii part of the State; in the Upper Sonoran Zone. 



5. Eragrostis ObtUSiflora Scribn. An alkali loving species 

 known only lioin low alkaline flats in the southwestern part of the 

 State; in the Lower Sonoran Zone. 



6. Eragrostis Secundiflcra Piesl. A very pretty grass 00- 

 curring mndeiately frequently on the plains of the eastern side of 

 the State, in the Upper and Lower Sonoran Zones. 



7. Eragrostis sessilispica Huekl. Collected but once, on 

 the sand hills just south of Alelrose. 



8. Eragrostis trichodes (Nutt.) Nash. A rare species 

 known cnly from the southi ast< in jiart of the State in the Upper 

 Sonoran Zone. 



9. Eragrostis lugens Xees. There is good reason to be- 

 lieve that this determination is incorrect, since this species originally 

 came from South America. The plant here referred to is rather 

 common in the drier mountains especially in the southera part of 

 the State in the T^pjier Sonoran Zone. 



10. Eragrostis pectinacea (Miehx.) Steud. Rare in the 

 extreme eastern edge of the State south of Portales, probably 

 coming in from Tp.vas; in the Upper Sonoran Zone. 



60. EATON I A Kai. 



Second eiiiiity glnire not much wider, if at all, 

 than the flowering glumes, obtuse or acute, 



thin and with a broad scarious margin. !. K. veniisi/lvanica. 

 Second empty glume much wider than the 

 floweiirg glumes, rounded or truncate and 

 somewhat cucullate at the apex. 

 Intermediate rerves of the second glume 

 faint: leaves narrow: panicle very narrow, 



dense, and .spike-like. j, f:. ohtnsata. 



Intermediate nerves almost as prominent aa 

 the main ones: leaves wider; panicle 

 longer and broader, and not so strict. .".. H. vobitsto. i, 



I. Eatonia pennsylvanica (D. C.) Gray. In the mountains 

 of the northern part of the State; mostly in the Transition Zone. 



