504 



MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



Figure 737. — Cynodon dactylon. Plant, X Vi\ spikelet and two views of floret, X 5. (Kearney, Tenn.) 



Ariz., where it survives submergence 

 and furnishes grazing at low water. 



Cynodon transvaalensis Davy. Ex- 

 tensively creeping with fine foliage, the 

 blades rarely more than 1 mm. wide; spikes 

 mostly 2 or 3, the spikelets a little narrower 

 and the glumes shorter than in C. dactylon. 

 % — Coming into cultivation as a lawn- 

 grass, escaped, Ames, Iowa, and Bard, Calif. 

 Introduced from South Africa, 



104. WILLKOMMIA Hack. 



Spikelets 1-flowered, dorsally com- 

 pressed, sessile in 2 rows on one side 

 of a slender rachis and appressed to 

 it, the rachilla somewhat lengthened 

 below and above the second glume, 

 disarticulating just above it, not pro- 

 longed above the floret; glumes thin, 



