24 [Feb. 



pilose margin ; the upper palea lanceolate, 1-nerved, indurated and involute. 

 Anthers 3. Sligmas 2, plumose. — A scabrous leaved grass, with a simple inar- 

 ticulated culm, terminated by a loose, narrow, somewhat spiked panicle. So 

 called in allusion to the remarkable toothing of the calyx. 



C. montanum. 



Hau. In the Kocky Mountains, near Santa Fe, Mexico. Flowering in 

 August. 



MUHLENBERGIA. 



(§ * Trichochloa) ^purpurea. Annual, dwarf; much branched from the 

 base and many-jointed; glumes very short and obtuse; palete and awns 

 purple, the latter capillary, many times longer than the palea, the inner one 

 acute and shortly awned. 



Hab, Santa Barbara, Upper California, and the island of Catalina. 



CALAMAGROSTIS. 



§ * Feichagrostis. — Spikelets 1-flowered, the flower sessile, with long hairs 

 at the base. Glumes 2, subequal, membranaceous, acute, longer than the flower, 

 the lower vsith a short terminal awn. Palese 2, very acute, the lower carinate, 

 ending in an exserted capillary awn, the upper l-nerved acuminate. Carijopsis 

 free, cylindric-oblong, much shorter than the glume. 



C. *Andina. 



Kab. In Upper California, on the Colorado of the West. 



FESTUCA. 



§ * Chloropsis. — Spikelets unilateral, 2-flowered, or with the third abortive ; 

 flowers hermaphrodite, distichal. Glumes 2, carinate, unequal. Palew 2, the 

 lower lanceolate, hirsute and concave, ending in a long, slender awn, the upper 

 bicarinate. Stamens 1. Ovary sessile. Styles 2, very short, with plumose 

 stigmas Caryopsis lanceolate, smooth, concave above, nearly free. — A slender 

 Californian annual grass, with a simple, filiform culm, ending in a small, nearly 

 simple, spiked panicle; the spikelets sessile on a continuous, angular rachis, at 

 length cernuus. So closely allied to the Chi,oride.t;, that at first I imagined it 

 would prove a species of Euiriana; it is still, however, a Festuca in habit. 



F. microst'ichys. 



Hab. Pueblo de los Angeles, Upper California. 



§. *TRACHrcARPHA. — Spikelets many-flowered, secund, seated on the sides of 

 a branching angular rachis. Glumes 2, the upper minute. Palese 2, the lower 

 with a long awn and strongly ciliated on the margin. Caryopsis adhering to the 

 upper palea. 



F. me(j!;ulura. Slender leaves and elongated, simple culm, smooth; panicle 

 spiked, elongated, the branchlets angular and appressed; paleae and their long 

 awns very scabrous , uppermost floret of the spikelet abortive. 



Hab. Santa Barbara, Upper California. 



MELICA. 



M. ^panicoides. Panicle elongated, many-flowered, the flowers small and 

 numerous; glumes 1-flowered, with a small, infertile rudiment; palece smooth, 

 scarcely longer than the acute glumes. ' 



Hab. Santa Barbara. Flowering in April. 



