48 Festuceae 



than the glume, 2-keeled. Stamens 3. Styles distinct. 

 Grain free, enclosed in the glume and palea. 



1. D. glomerata L. Culms 6-12 dm. high, tufted, erect, 

 simple, smooth ; sheaths shorter than the internodes, smooth or 

 rough; ligule 2-4 mm. long; blades 7-20 cm. long, 2-6 mm. wide, 

 flat, scabrous; panicle 7-18 cm. long, its branches spreading or as- 

 cending in flower, erect in fruit, the lower 25-60 mm. long; spike- 

 lets in dense capitate clusters, 3-5-flowered ; empty glumes 1-3- 

 nerved, the first shorter than the second; flowering glumes 4-6 

 mm. long, rough, pointed or short awned, ciliate on the keel. 

 Occasional in yards about Los Angeles. 



32. CYNOSUBUS L. 



Annual or perennial tufted grasses with flat leaves 

 and dense spike-like inflorescence. Spikelets consisting 

 of narrow empty glumes with a continuous rachilla, the 

 terminal spikelets of 2-4 broader glumes with articulate 

 rachilla, and subtending perfect flowers. The 2 outer 

 glumes broad, 1-3-nerved, pointed or short awned ; 

 upper glumes narrower, usually empty. Glumes of the 

 sterile spikelets pectinate, spreading, linear-subulate; 

 1-nerved. Stamens 3. Styles distinct, short. Grain 

 finally adherent to the palea. 



1. C. cristatus L. Perennial; culms tufted, erect, slender, 

 3-6 dm. high; sheaths smooth, shorter than the internodes; 

 blades of the culm flat, 2-10 cm. long, 1.5-3 mm. wide ; spike near- 

 ly cylindric, oblong or linear, 3-10 cm. long; the clusters of spike- 

 lets all turned to one side, the empty ones forming involucres to 

 each cluster. 



On lawns, rarely seen. Los Angeles, Davidson. Native of Europe. 



33. LAMABCKIA Moench. 



A low annual grass with flat leaves and showy 1-sided 

 panicles of crowded fasciculate spikelets, the fertile 

 spikelets nearly enclosed by the numerous sterile ones. 

 The terminal spikelet of each fascicle fertile, the others 



