FEB. 1903. PLANTS YUCATAN^E MILLSPAUGH & CHASE. 



59 



Hab. Nohcacab, Nov. 25, 1865, Schott 703. (Schott's 594 from 

 the aguada de Labcah, July, 1865, without inflorescence, is probably 

 this species. He applies the Yucatec name Canote.) 



ARUNDO L. Sp. PI. 120. 



Inflorescence paniculate. Spikelets 2-several flowered, perfect, 

 or the upper or lower sometimes staminate; rachilla articulated above 

 the empty glumes and between the florets, smooth. Empty glumes 

 2, floral glumes thin, membranaceous, bidentate, cuspidate between 

 the teeth, long pilose on the back. Grain dorsally compressed, free. 

 Stamens 3. 



Arundo Donax L. Sp. PI. 81. 



Panicle included at base or finally exserted, contracted, densely 

 flowered, 5060 cm. long, 6-10 cm. wide, branches fasciculate, com- 

 pound, erect, spikelet-bearing on the 

 upper half, or on lower branches to 

 near the base; branches hispidulous. 

 Spikelets tawny, 6-7x12-14 mm., 

 4-flowered on pedicels 2-5 mm. long, 

 joints of rachilla i mm. long. First 

 glume 10- 1 1 mm., narrowly lanceolate, 

 acuminate, 5-nerved; second, 10-12 

 mm., narrowly lanceolate, acuminate, 

 sometimes with a slender tooth each side 

 of the apex (formed by the glumes 

 splitting at the lateral nerves), 3-nerved; 

 floral glumes 10-13 mm., lanceolate, bi- 

 dentate, with a cuspidate point between 

 the teeth, 3-5 nerved, the lower part of 

 glume clothed with silky, smoky-white hairs 7-8 mm. long; palea 5 

 mm. oblong-lanceolate, truncate, ciliolate on the two nerves. Grain 

 rusty black, oblanceolate .8x2.2 mm.; in section unequally biconvex. 

 Hab. Common on the coast, in aguadas, cenote's and often cul- 

 tivated, Progreso, Gaunter 1141. 



PHRAGMITES Trin. Fund. Agrost. 134. 



Inflorescence paniculate. Spikelets 2-several flowered, the low- 

 est floret staminate or neuter, those above perfect; rachilla articu- 

 lated above the empty glumes and between the florets, clothed with 

 long silky hairs. Empty glumes 2, floral glumes thin, mernbranaceous, 

 entire, glabrous. Grain dorsally compressed, free. Stamens 3. 



Phragmites vulgaris (Lam.) B. S. P. Prel. Cat. N. Y. 69. 

 Arundo vulgaris Lam. 

 Panicle included at base or finally exserted, densely flowered, 



