170 PROCEEDINGS OF THE AMERICAN ACADEMY 



Cyperds ? Allied to 0. Jtliculmis, Torr., and C. Jeucolepis, 



Boeckl. (IGll Coulter), but the spikelets in loose spikes loosely um- 

 bellate. At San Luis Potosi (5 GO Scbaffner). 



Cyperus articulatus, Linn. At Guanajuato (Duges). Known 

 as " Tule Cliico." 



CvpERDS PHYMATODES, Muhl. At San Luis Potosi (559 Scbaff- 

 ner), and Guanajuato (Duges) ; 908 Pairy & Palmer ; 254 Hartweg. 



Cyperus ? Very near G. erythrorrhizos, Micbx., but the 



nutlet elliptical and a half longer. At Guanajuato (Duges). Known 

 as " Tule grande." 



Cyperus Bald winii, Torr. At Guadalupe (1331) and Bluffton, 

 Texas (1332). 



Cyperus uniflorus, Torr. West of San Antonio, Texas (2018). 



Cyperus incompletus, Link. At Guanajuato (Duges). Appar- 

 ently according with the description. 



Cyperus ovularis, Torr. West of San Antonio, Texas (2017). 



Cyperus flavus, Vahl. At San Miguehto, San Luis Potosi (565 

 Scbaffner) ; 909 Parry «fe Palmer. 



Cyperus Michauxianus, Scbultes. At Sutherland Springs 

 (1333), and at Uvalde, Texas (1334), the latter a stout highly devel- 

 oped form, with the umbel a foot long and the involucral leaves nearly 

 3 feet in length. 



Eleocharis capitata, R. Brown. At Sutherland Springs, Texas 

 (1328). The same as 711 Wright, which is referred to E. albida in 

 herb. Torrey. 



Eleocharis palustris, R. Brown. At San Luis Potosi (576 

 Scbaffner); 913 Parry & Palmer. 



Eleocharis arenicola, Torr. Near Morales (577 Scbaffner) 

 and at Penasco, San Luis Potosi (578 Scbaffner). 



Eleocharis ? Resembling E. microcarpa, Torr., but the 



greenish nutlet somewhat larger and more turgid, minutely striate 

 longitudinally ; bristles as long as the nutlet. Near Moi'ales, San 

 Luis Potosi (575 Scbaffner, in part). 



Eleocharis cancellata. Of the same group and habit as the 

 last, the angular scapes 1 to 1| inches high and the greenish spikes 1 

 to IJ lines long: scales short, obtuse, with a narrow brown line on 

 each side : nutlet without bristles, obovate-pyriform, white and shining, 

 minutely cancellate, the narrow meshes of the reticulation transverse 

 and in vertical lines : tubercle much depressed. — Near E. Liebman- 

 niana, Boeck. With the last (575 Scbaffner, in part) ; 912 Parry & 

 Palmer. 



