16. E. pilifera, Scheele. Texas to Arizona. 



17. E. pilosa, Linn. Introduced. 



18. E. Purshii, Schrad. New England to Arizona. 



Very widely diffused over the United States, extending into 

 Mexico. It is of no agricultural value. 



19. E. reptans, }fees. New England to Texas. 



20. E. tenuis, Gray. New England to Texas. 



Melica, Linn. 



Panicle narrow and strict, or lax and spreading, or racemose and 

 secund ; spikelets two to many flowered, the flowers usually convo- 

 lute around each other, the upper one to three smaller and imper- 

 fect ; outer glumes membranaceous or hyaline, acute or obtuse, 

 awnless, the lower three to five nerved, the upper sometimes seven 

 to nine nerved, the lateral nerves vanishing within the scarious mar- 

 gin. Flowers somewhat distant ; flowering glumes of thicker tex- 

 ture, becoming somewhat coriaceous, rounded or flatfish on the back, 

 five to nine nerved, the lateral nerves vanishing below the apex, the 

 central one sometimes ending in a point or an awn ; palets shorter 

 than their glumes, two-keeled, ciliate on the keels and apex. 



1. M. acuminata, Bolander. California and Oregon. 



2. M. aristata, Thurber. California and Oregon. 



3. M. bromoides, Gray. California and Oregon. 



M. bromoides, var. Howellii, Scrib. California and Oregon. 



4. M. bulbosa, Geyer. California, Nevada, to Montana and 



Oregon. 



5. M. Californica, Scrib. (M. poseoides, Torr.) California. 



6. M. diffusa, Pursh. Texas to Arizona. 



M. diffusa, var. nitens, Scrib. Texas to Arizona. 



7. M. frutesceus, Scrib. Southern California and Arizona. 



8. M. fugax, Bol. California and Oregon. 



9. M. Harfordii, Bol. California and Oregon. 



10. M. imperfecta, Trin. California and Oregon. 

 M. imperfecta, var. flexuosa, Bol. California. 

 M. imperfecta, var. minor, Scrib. California. 

 M. imperfecta, var. refracta, Thurb. California. 



11. M. mutica, Walt. (M. glabra, Michx.) Melic grass. Eastern 



and Atlantic States. 

 A perennial grass, growing sparingly in rich, rocky woods through- 



