6 4 



FIELD COLUMBIAN MUSEUM BOTANY, VOL. III. 



closely enfolded in the thickened coriaceous base of the palea, free. 

 Stamens 3. 



Distichlis spicata (L.) Greene Bull. Calif. Acad. Sci. 2:415. 

 Uniola spicata L. ^ 



Distichlis maritima Raf. ,X' 



Panicle finally exserted, contracted, 3-5 cm. long, 1-1.5 cm. wide; 

 axis and rachis minutely scabrous. Staminate spikelets 5-6x10-12 



mm., densely 7 i3-flowered, on ped- 

 icels 1-3 mm. long; joints of rachilla 

 .6 mm. First glume 2 mm., ovate, 

 obtuse, obscurely 5-nerved; second 

 glume 3 mm. , ovate, acute, obscurely 

 5-nerved, hispidulous on the keel 

 above; floral glumes 4-4.3 mm., 

 ovate, acute, g-nerved (the nerves in 

 3's); palea equal in length, deeply 

 folded between the hispidulous 

 nerves. Pistillate spikelets 2. 7 x 6-6. 5 

 mm. densely 4-5-flowered, on pedi- 

 cels 1-3 mm. long; joints of rachilla 

 .4 mm. First glume 2 mm., ovate, 

 subacute, 5-nerved; second glume 3 

 mm., broadly ovate, abruptly acute, 

 obscurely 5-nerved, hispidulous on 

 the keel above; floral glumes 3.5-3.7 mm., broadly ovate, acute, 

 g-nerved (nerves in 3's); palea nearly equal, deeply folded between the 

 hispidulous nerves. Grain dull brown, elliptic, acute at each end, 

 1.2x2.3 mm.; in section oval with concave truncate ventrum. 



Hab. Celestun, May 13, 1865, Schott 494; Progreso, Gaumer 

 2496. 



GUADUA Kunth Syn. PI. 1:252. 



Spikelets several to many flowered, terete or little compressed, 

 glomerate or fasciculate; lower florets 

 staminate or neuter, the others per- 

 fect. Empty glumes several; floral 

 glumes rigid, subcoriaceous. Grain 

 dorsally compressed, enclosed in the 

 fruiting glumes, free. Stamens 6. 



Guadua latifolia Kunth Syn. PI. 



1:254. 



Spikelets sessile in half whorls 

 or fascicles at the nodes of the 

 branches of the panicle; internodes 

 2-10 cm. long, tomentose below 

 the nodes. Spikelets 2. 5-6 cm. long, 

 56 mm. wide, 5 g-flowered, cylindric, 

 sub-arcuate; rachilla articulated be- 

 tween the florets, internodes 5 mm. natK " 

 long, flattened. Empty glumes 4-6 or more, broadly triangular, many 



