il 



BOTANY, 



227 



embraced by the broad membranaceous margins of the rachllla, "wbich at lengtli separate and 

 appear like 2 inner scales, in which character it accords with the subgenus Papyrus. This 

 species is allied to C. ligularis, Linn. 



Cyperus DISSITIFLORUS5 Toi'T. Cijp. p. 266. Western Texas ; Wright. Resembles the last, but 

 is a much smaller plant, with short rays and spikes; the spikelets acute, with narrower scales, 

 etc. 



Cyperus repens, EIL SJc. lyj>. 69 ; Tor. Cyp. p. 264. C. phymatodes, Muld. Gram. p. 23, 

 Hills near the Copper Mines, New Mexico, and dry ravines on the Limpia, western Texas ; 

 Bigeloio. Sandy river-banks, San Luis Eey, California ; Parry. (No. 1948, Wriglit.) 



Cyperus setigerus, Torr. <& Hook, in Torr. Cyp. p. 434. Ravines near Eagle Pass^ on the Rio 

 Grande ; Bigdoia. Western Texas ; Wright. 



Cyperus lutescens, Torr. & Hooh. I. c. Western Texas ; Wright^ (No. 705.) Perhaps too 

 near the last species. 



Cyperus Balbwinh, Torr. Cyp. p. *70. Dryplains between thePecos and Devil's river; BigelovK 



Cyperus trachy^^otus (n. sp.): cnlmo valido foliisqne glabro obtuse trigono ; umbella simplici 

 3-6-radiata, radiis valde ineqnalibus ; involucro 3-4'phyllo longissimo ; spicis subglobosis 

 polystachyis laxiusculis, spiculis lanceolatis compressis lO-l^-floris; sqnamis parum remotis 

 ovatis acuminatis apice subrecurvatis mucronatis, carina superne denticulato-spinulosa; stamina 

 3 ; acheniis triquetris basi attenuatis (nigris) squama duplo longioribus. - Ravines near the 

 mouth of the Pecos and on DeviPs river ; Bigeloia, Schott. (Nos. Y04 and 1943, Wright.) I 

 have this plant from Key West. It is a well marked species, and does not appear to have been 

 hitherto described* 



Cyperus filiculmis, Fahl, Enum. 2, p. 328; Torr. Cyp. p. 267. Western Texas ; Wright. 

 Cyperus ovularis, Torr. Cyp. p. 278. Mariscus ovularis, Yahl^ Enum. 2, p. 374. Western 

 Texas ; Wright. 



Cyperus HASPAisr, Linn. Sp. p. 66; Kunth^ Enum. 2, p. 34. C. gracilis, Muhl, Gram. p. 18. C. 

 leptos, SchilteSj Mant. 2, p. 105 ; Torr. Cijp. p. 273. Western Texas ; Wright. 



Cyperus Drummondii, Torr. dt Hooh. in Torr. Cyp, p. 437. Leone, western Texas ; Bigeloio^ 



Wriaht. Differs from Drumm 



umbel, longer rays and 



larger spikelets with the scales less closely set. We have specimens also from Louisiana and 

 Florida, in which the umbels are compound, but the spikelets are smaller, like those of the 



original plant. 



Fl. 1, p. 28 ; Torr. Cyp. p. 275. Moist ravines, western Texas and 



New Mexico, near the Hio Grande ; Bigeloio. 



274. Wester 



Kunthj Enum. 2,^. 23. C. inflexus, Muhl. Gram. p. 16; Torr. 

 s to California. (Nos. 1951 and 1955, Winght.) A widely-spread 



Kunth 



as we can judge from the characters. 

 Cyperus Schweinitzh, Torr. Cvp. p. 276 



Torr, I. c. Hills near the Copper 



Mines of New Mexico, and wet places. Rock Creek ; Bigelow. (Nos. 703, 1944, and 1945 

 Wright.) Our numerous specimens show a gradual transition from C. Houghtonii to C. 

 Schweinitzii. 



Miclwc, 



Coleto 



Wet places, Leon Springs, 



