62 



FIELD COLUMBIAN MUSEUM BOTANY, VOL. III. 



paleae after fruit and 

 ovate, acute, hispid 



O 



glumes have fallen. First and second glumes 

 on the keels, first i mm., second 1.3 mm.; 

 floral glume 1.1-1.3 nun. abruptly 

 acute, hispid on the keel, minutely stri- 

 gose, palea i i.i mm., acute, papillo- 

 ciliate on the winged keels. Grain 

 translucent reddish - brown, ellipsoid, 

 acutish at each end, longitudinally stri- 

 ate with wavy lines, .25X.6 mm.; in 

 section orbicular. 



Hab. Quinta del Obispo, Nov. 24, 

 1864, and Sept. 5, 1865, Schott jp,- 

 common in open lands near Izamal, 

 12-14 inches high, June to Jan. Gau- 

 nter jij {Eragrostis Mexicanus Field 

 Col. Mus. Bot. 1:288), Yucatan loc 

 ignot 851 (Eragrostis ciliaris Field Col. 

 Mus. Bot. 1:351), Chichankanab 1567. "Too delicately rooted to 

 form pasture. It is readily pulled up by grazing cattle;" damp soil 

 near the Caleta, Island of Cozumel, Millspaugh PI. Utowana 1528. 



Eragrostis ciliaris (L.) Link Hort. Berol. 1:192. 



Poa ciliaris L. 



Panicle included at the base or finally exserted, dense, cylindri- 

 cal, more or less interrupted toward the base, 412 cm. long, .5-1 cm. 

 wide, branches short, erect or nearly so, 

 axis and rachis scabrous. Spikelets 

 1.6x2-3 mm., loosely y-io-flowered, 

 pale brownish-green, on slender pedi- 

 cels % to equal their own length; joints 

 of the rachilla .15 mm. articulated, fall- 

 ing with the fruit and glumes. First 

 and second glumes ovate, acute, cuspi- 

 date, hispid on the keels, first .9 mm., 

 second 1.2 mm.; floral glume 1.1-1.3 

 mm., acute, mucronate, hispid on the 

 keel, strigose; palea .9-1 mm., acute, 

 papillo-ciliate on the winged keels. 

 Grain reddish-brown, translucent, ellip- 

 soid, obtuse at each end, smooth 

 and shining, .25X.5 mm.; in section depressed orbicular. 



Hab. Merida at Quinta del Obispo, Nov. 24, 1864, and ruins of 

 Uxmal, Sept. 16, 1865, Schott 20, Merida, Sept. 5, 1865. 619; on open 

 lands, 10 inches high, Gaunter 312, very abundant along roadsides 

 near Izamal, 6 inches high, July to March, JJ<5, Chichankanab, 2232. 

 " Forms fair pasturage in favorable soil, though no attempt has been 

 made to cultivate the species;" Tekanto, Feb. 27, 1890, Stone 187 (in 

 Herb. Phila. Acad. Sci.). 



Eragrostis amcena Presl. in Rel. Haenk. 1:275. 



Panicle exserted, contracted, stiff, 3-12 cm. long, 1-1.2 cm. wide, 

 axis and rachis scabrous, branches short, erect. Spikelets 3x10-15 mm., 



