FESTL'CE.E. 



r)19 



The grass is not likod by cattle. 



Var. laxa Vasey ined. More slender, sheaths often shorter than 



r 



Fig. 106. — Distichlis spimta. A, spikelet; b, floral glume; c, palea. 



(After Trillins.) 



the internodes. blades flat, lU-15 em. long, 2 mm. wide, pauicle 

 racemose. 



Utah (Lake Tark). -S'. JA Trari/ in 1887. 



121. (253). BRIZA L. Sp. PI. 70 (1:5:3). QUAKING-GHASS. 



Calothcca et Clmsnilijfrutn Dosv. Xov. Bull. Sou. Philom. :3:1!»0 

 (1810). Poa Adans. Fam. 2:34 (i:()3). Tremidaria Heist. Syst. 

 12 (1748). For additional synonyms see names of sections. 



Spikelets several-flowered, ovate or cordate, flattish-tumid on 

 filiform ])odicels, in a simple or componnd jianicle, racbilla lila- 

 brons, articulate between the flowers. Empty glumes membi'anouA 

 orsearious, unequal, very concave, nnawned, 3-5-1 1 -nerved; florets 

 imbricate, floral glume very broad, concave or inflated, obtuse, acute 

 or shortly awued, 5- to many-nerved; iialea much smaller, but very 

 broad and flat with 2 ciMate keels. Stamens 3. Stigmas branc'hed, 

 plumose, f J rain obcompressed, broadly ovoid, slightly adhering to 

 glume and palea or free from them. 



