78 PANICACE.E. 



whole length of the branches. First glume ovate-lanceolate, 3- 

 uerved, about 3 mm. long, second 5-nervcd, 4 mm. long, third 

 glume (floral glume of the staminate floret) 7-nerved, 3 mm. long; 

 palea nearly as long as its glume ; floral glume of the upj^er floret 

 round on the back, 3 mm. \ong, scabrid, very obscurely 5-nerved, 

 bearing a tuft of short hairs at its base and a terminal awn about 

 6 mm. long; palea shorter, 2-nerved. 



Mexico, Pringle 1746, Palmer 526. 



A. Cubensis Gn^eh. in Plautse Wrightianae Cubensis, No. 1552, 

 is identical with the above 1746 of Pringle, 526 of Palmer. 



Found in Mexico and several countries of South America. 



3. A. Deppeana Nees, Bonplandia 3: 84 (1855). 



A rather slender, smooth perennial; culms hard, 90-150 cm. 

 high. Ligule very short and fringed with hairs; blades smooth or 

 slightly scabrid or pubescent, involute, 20-30 cm. long. Panicle 

 elliptical, 20-40 or more cm. long, rays mostly in threes to fives, 

 sparingly branched. Spikelets on pedicels 1-2 mm. long, scattered 

 the whole length of the branches. First glume less than 2 mm. 

 long, besides the very short and narrow apex, 3-nerved, second 

 lanceolate, 5-nerved, 3.5 mm. or less long, third (floral glume of 

 the staminate floret) 2.3 mm. long, floral glume of the upper floret 

 2 mm. long, with an awn having one bend above the spikelet. 



Mexico, Pringle 3133. 



It differs chiefly from A. pallida in its shorter glumes and 

 longer awn, with only one bend; and it is not improbable that a 

 study of more plants may show that one is only a variety of the 

 other. 



Tkibe v.— PANICE^. 



Fertile spikelet with one terminal perfect or pistillate flower, 

 with or without a staminate one below it; arranged in spikes, 

 racemes or panicles, falling off singly from the ultimate branches; 

 the axis usually continuous. Floral glume and palea of the perfect 

 flower always firmer than the empty glumes, unawned (or in 

 Eriochloa with a short straight awn); empty glumes rarely with 

 straight awns. Stamens three, rarely fewer. Grain enclosed in 



