MAYDE.E. 19 



inate spikelets oblong or liuear or acute, 8-9 mm. long, first empty 

 glume coriaceous, oblong, margins abruptly involute, keeled, ob- 

 scurely !)-ir»-uerved, second tbiuuer, 5-nerved; tloral glumes bya- 

 line. oblong, 5-nerved; paleae spatulate oblong, a little longer tban 

 the glnnu'S. Anthers 5 mm. long. 



Fla.. Cin-tit>s',m2(J; Texas, JIallSU; Ala., Winchell; Ind. Terr., 

 /'((/iiirr 4'i'i. Moist soil, Conn., 111., and soutli to Brazil. When 

 young sometimes cut for bay. 



\'ar. Floridanum (Porter). T. Floridiouim T. V. Porter, 

 Vasey in Contrib. U. 8. Nat. Herb. 3 : G (1892). 



Culm rather slender. Sbeatlis comi)ressed-keeled ; blades in- 

 voluti", tlie longest about 60 cm. long, 4-8 mm. wide, with filiform 

 tips. Anthers -i mm. long. 



Fla.. (htrbcr'i':; Texas, XcaUij. 



\ar. Lemmoni (\'asey). T. Lcmmoni Vasey Contrib. U. S. 

 Kat. Herb. 3 : U (1892). 



Sheaths sometimes hirsute; blades narrower, often involute. 

 Joints of fertile portion of spikes 3-4 mm. long. First glume of 

 the stam inate spikelets membranous, ovate-oblong, about 7 mm. 

 long. Second glume thinner. 



Arizona, Leitimon and icife 2932. 



2. T. fasciculatum Trin. Bull. Acad. Brux. 9 : 8 ( ). 



T. (iar/i/loidrs Schlecht. (not Linn.) in Linn. G : 40 (1831). 



Culms robust. 5-T m. high. Blades lanceolate, often 4-5 cm. 

 wide, nuirgins ciliate-scabrous. Spikes racemose witb 3-T~20 

 brandies; joint of pistillate portion 5 mm. long, tlie staminate 

 portion flexuose. Staminate spikelets 4-5-8 mm. long, first glume 

 membranous, linear, 7-nerved. 



Mexico. Palmer 58, 508, 509. 



4. (32). COIX L. Sp. PI. 972 (1753). 



Spikelets monoDcious, si)icate, several above staminate, 1-2 of 

 tlie lower pistillate; the slender raciiis articulate above the pistillate 

 Bpikelets. 'I'he staminate spikelets in twos or threes, one of them 

 lu'dicellate, 1-2-ilowered. CJlunu's of the staminate spikelets 4, the 

 2 outer firm or herbaceous, aligiitly unequal, empty, the 2 inner 

 hyaline. Stamens 3. Pistil rudimentary or 0. The pistillate 



