336 



POACE^. 



Culms erect, branching below, 15-60 cm. high. Sheaths shorter 

 than the internodes; ligule -i-S mm. 

 long; blades flat or involute, pale green, 

 5-12 cm. long. Sjiikelike panicle, 5-15 

 cm. long, nearly 1 cm. broad, shining 

 with a Instre like satin. Spikelets lan- 

 ceolate, slightly scabrous on the keels, 

 5-6 mm. long, first glume with a shiny 

 enlargement at the base. 



California near the sea coast,.also in 

 Chili, and in the yicinity of the Medi- 

 terranean Sea. 



The grass appears to be unpalatable 

 to stock. 



68. (140). Calamageostis Adans. 

 Fam. PI. 2: 31 {l':^^). Deyeuxia Clar. 

 Beauv. Agrost. 43, t. 9, figs. 9, 10 

 (1812). Laclmagrostis Trin. Fund. 

 Agrost. 128 (1812). Bdcliela Steud. 

 Syn. PI. Gram. 101 (1854). 



Spikelets 1-flowered, pedicellate or 

 rarely sessile, the panicle either loose 

 and spreading or narrow and spikelike, 

 the rachilla articulate above the outer 

 glumes, usually bearing a tuft of hairs 

 round the floral glume and produced 

 beyond it in a small ciliate (rarely glabrous) bristle, very rarely 

 bearing an empty glume or imperfect flower, sometimes very 

 minute, or deficient. The two outer glumes persistent, keeled, 

 unawned; floral glume shorter and very thin, about as long 

 (rarely longer and membranous), broad, 5-nerved below the awn, 

 with a fine dorsal awn, usually bent and twisted, rarely short and 

 straight or sometimes absent; palfta thin, more than half as long as 

 its glume, faintly or prominently 2-nerved. Styles distinct, short. 

 Grain enclosed and sometimes partially adhering to floral glume 

 and palea. 



Fig. 58. — Gnstridium ansirale. 

 A, spikelet; a, floret. (Scrib- 

 ner.) 



