MAYDE^. 19 



inate spikelets oblong or linear or acnte, 8-9 mm. long, first empty 

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

 scurely 9-15-nerved, second thinner, 5-nerved; floral glumes hya- 

 line, oblong, 5-nerved; palese spatulate oblong, a little longer than 

 the glumes. Anthers 5 mm. long. 



Fla., Curtiss'iQ^Q; Texas, Hall 84:4:-, Ala., Winchell; Ind. Terr., 

 Palmer 422. Moist soil. Conn., 111., and south to Brazil. AVlieu 

 young sometimes cut for hay. 



Var. Floridanum (Porter). T. Floridaman T. C. Porter, 

 Vasey in Contrib. U. S. Nat. Herb. 3 : 6 (1892). 



Culm rather slender. Sheaths compressed-keeled; blades in- 

 volute, the longest about 60 cm. long, 4-8 mm. wide, with filiform 

 tips. Anthers 4 mm. long. 



Fla., Garher 77; Texas, Neally. 



Var. Lemmoni (Vasey). T. Lemmoni Vasey Contrib. U. S. 

 Nat. Herb. 3 : 6 (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, Lemmon and tvife 2932. 



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



T. dactyloides Schlecht. (not Linn.) in Linn. 6 : 40 (1831). 



Culms robust, 5-7 m. high. Blades lanceolate, often 4-5 cm. 

 wide, margins ciliate-scabrous. Spikes racemose with 3-7-20 

 branches; joint of pistillate portion 5 mm. long, the 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 monoecious, spicate, several above staminate, 1-2 of 

 the lower pistillate ; the slender rachis articulate above the pistillate 

 spikelets. The staminate spikelets in twos or threes, one of tliem 

 pedicellate, l-'2-flowered. Glumes of the staminate spikelets 4. the 

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

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



