i8 



FIELD COLUMBIAN MUSEUM BOTANY, VOL. III. 



pubescent; primary branches fascicled, pilose at the base; racemes 

 slender, many jointed, rachis puberulent, pilose at the base, inter- 

 nodes 5-8 mm. Spikelets all 

 perfect, .8x3.2 mm., densely 

 pilose at the base with white 

 spreading silky hairs twice the 

 length of the spikelets. Empty 

 glumes 2, lanceolate, acute, 

 scabrous above, first 4-nerved, 

 second 3-nerved (lateral nerves 

 often obscure), ciliate above; 

 floral glume 2.5 mm., oblong- 

 ovate, acute, i-nerved, ciliate; 

 palea minute or wanting. 

 Grain not seen. 



Hab. Yot Donot, Gaunter 

 1323, Calotmul 2307. 



"For culture, varieties are 

 chosen which have been repro- 

 duced for centuries by cuttings, 

 and consequently have become nearly incapable of blooming." 

 (Hackel's "True Grasses," translated by F. Lamson-Scribner, p. 50.) 



HACKELOCHLOA Kuntze Rev. Gen. PI. 2:776. 



Inflorescence of spike-like racemes. Spikelets heterogamous, in 

 pairs, partially imbedded in the excavations of the articulate rachis, 

 one sessile, perfect, i-flowered, the other pedicellate, staminate or 

 neuter, the pedicel grown to the rachis. Glumes of the perfect spike- 

 let 4; the first indurated, globose, and covering the cavity in the 

 rachis. Grain ovoid. Stamens 3. 



Hackelochloa granularis (L.) Kuntze Rev. Gen. PI. 2:776. 



Cenchrus granularis L. 



Inflorescence of 2-4 spike-like ra- 

 cemes, in leafy panicles, more or less 

 included. Racemes 12-20 mm. long, 

 2.5 mm. wide, often exceeded by the 

 subtending leaf. Internodes o f t h e 

 rachis i mm. long, brown or black; 

 scabrous. Pediceled spikelet fuscous, 

 scabrous, 2 mm.; first glume ovate, 

 flattened dorsally, 7-nerved, the lat- 

 eral nerves hispid; second glume scaph- 

 oid, 7-nerved, the keel hispid; third 

 and fourth shorter, hyaline, sometimes 

 with a staminate flower, usually empty. 

 Perfect spikelet globose, 1.6 mm., 

 first glume light brown turning cinere- 

 ous black in maturity, faveolate and 

 granular; second of equal length, less rigid, white, oval, i -nerved 

 with a thickened margin, immersed in the cavity of the rachis; third 



