438 POACE.E. 



liiol. Centr. Am. Bot. 3:581(1880). llackclia (?) (tmjnstifuJia 

 Vasey, MS. 



Culms sim])le, terete, solid, GO-TO cm. high. Sheaths longer 

 than the internotles; ligule fringed, 1 mm. long; blades flat, 

 smootli, 20-30 em. long, 7-10 mm. wide, midnerve white. Panicle 

 pyramidal, 30-40 cm. long. Spikelets 8-12 mm. long, S-S-flowered, 

 subsossile, emi)ty glumes membranous, first 3.5-4 mm. long, second 

 5 mm. long; floral glume lanceohite, G-8mm. long, shortly silky-vil- 

 lous, midnerve extending into an awn 8-12 mm. long, lateral nerves 

 evanescent above; palea 2-toothed, callous, pilose. 



Mexico, rnhucr 1087. 



94. (193). BULBILIS Rafin. Am. Month. Mag. 4:190(1819). 

 Seshria Xutt. Gen. 1:04 1818), not L. Cahoithera Nutt. ex 

 Hook. Kew Journ. 8:18 (185G). Ihichh'e Engolm. Trans. St. 

 Louis Acad. 1: 432 /. U, figs. 1-17 (1859). 



Spikelets dia>eious, very dissimihir; those of tlie staminate plant 

 2-3-flowered, sessile, complauaie in 2 rows on one side of the rachis, 

 rachillanot articulate; empty glumes 2, membranous, awnless, in- 

 equilateral, elliptical, 1-nerved, mucronate, first about 2 mm. long, 

 second 3 mm. long; floral glume elliptical, 3-nervcd, mucronate, 

 3.5 mm. long; palea a little shorter than its glume, 2-nerved. Lod- 

 icules 2, deltoid. Stamens 3. Kudimentary pistil none. The 

 spikelets of the pistillate i)lant 1-flowered, sessile on one side of a 

 very short rachis, forming a cluster partly enclosed by the upper 

 leaves. The lowest glume of the lowest spikelets small, 1-3-nerved, 

 lanceolate-subulate, adnate to the second empty glume, this glume 

 firm with a 3-lobed apex, the central lobe longest; lowest glumes or 

 the other spikelets free, much smaller, membranous, ovate-l;;nceolate, 

 acute, 1-nerved ; floral glume narrow, firm or almost hyaline, 2- 

 cleft or subentire, enclosing a broad convolute 2-nerved palea and 

 a flower, Staminodia 0. Styles distinct, long, stigmas with short 

 hairs. Grain ovate, obcompressed with a groove. Blades flat, nar- 

 row. Staminate spikes 2-3 on one side of the apex of the culm ; 

 pistillate spikes usually 2. 



Nuttall had male plants only for establishing the genus Scs- 

 Icria, while Steudel founded the genus Antephora on the female 



