438 POACE^. 



Biol. Centr. Am. Bot. 3 : 581 (1880). Hachdia (?) anfjusHfolia 

 Vasey, MS. 



Culms simple, terete, solid, 60-70 cm. high. Sheaths longer 

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

 smooth, 20--30 cm. long, 7-10 mm. wide, miduerve white. Panicle 

 pyramidal, 30-40 cm. long. Spikelets8-12mm. long, 2-3-flowered, 

 subsessile, empty glumes membranous, first 3.5-4 mm. long, second 

 5 mm. long; floral glume hinceolate, 6-8 mm. long, shortly silky-vil- 

 lous, midnerve extending into anawnS-12 mm. long, lateral nerves 

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



Mexico, Palmer 1087. 



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

 Sesleria Nutt. Gen. 1:64 1818), not L. Calcmthera Nutt. ex 

 Hook. Kew Journ. 8:18 (1856). Buchloe Engelm. Trans. St. 

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



Spikelets dioecious, very dissimilar; those of the staminate plant 

 2-3-fiowered, sessile, complanate in 2 rows on one side of the rachis, 

 rachilla not articulate ; empty glumes 2, membranous, awnless, in^ 

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

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

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

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

 spikelets of the pistillate plant 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 of 

 the other spikelets free, much smaller, membranous, ovate-lanceolate, 

 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 

 liairs. 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. 



Xuttall had male plants only for establishing the genus Ses- 

 leria, while Steudel founded tbe genus A)ifepJi07-a on the female 



