OF ARTS AND SCIENCES. 459 



JuNCUS * MARGINATUS, Rostk. Near var. biforus, Engelm. Rio 

 Blanco. (13.) — J. acuminatus, Michx. ? Guadalajara. (241.) 



Cypeuus SERRULATUS, Watson. Rio Blanco. (14.) — C. SuRi- 

 NAMENSis, Rottb. Rio Blanco. (191.) — C. esculentus, Linn. Rio 

 Blanco. (194.) — C. unioloides, R. Br., var. bromoides, Clarke. 

 Rio Blanco. (195.) — C. prolixcs, HBK. Rio Blanco. (213.) — 

 C. NODOSUs, Willd. Guadalajara. (249.) — C. seslerioidhs, HBK. 

 Guadalajara. (290, as given in the Cambridge set ; jjerhaps 250 was 

 intended.) — C. amabilis, Vahl. Guadalajara. (433.) — C. fugax, 

 Liebm. Guadalajara. (B.) — Also a species too young for determi- 

 nation. Guadalajara. (253.) 



Kyllinga c^spitosa, Nees. Barranca. (82.) — Same, var. 

 ELATiOR, Boeckl. Rio Blanco. (192.) — K. odorata, Vahl. Gua- 

 dalajara. (253% as reported ; should probably be 233.) 



Rhynchospora, diseased. Rio Blanco, on rocky hills, among 

 pines. (202.) 



Eleocharis PALUSTRis, R. Br. ?; immature. Guadalajara. (225.) 



— E. QUADRANGULATA, R. Br. Guadalajara. (431.) 

 FiMBRisTYLis LAXA, Vahl. Guadalajara. (232.) — F. ciliati- 



FOLiA, Britton, n. sp. (271.) 



ScLERiA RETICULARIS, Michx., var. pubescens, Britton. Guada- 

 lajara. (434.) 



Paspaluji t LiviDDJr, Trin. Guadalajara. (245.) Also a va- 

 riety (?), used for sodding embankments. Rio Blanco. (206.) — 

 P. Hujiboldtianum, Fluegge. Rio Blanco and Guadalajara. (189, 

 286.) — P. PLiCATULUM, Michx. Rio Blanco and Guadalajara. 

 (190,468.) — P. PANICULATUM, Linn., var.? Barranca. (144.) — 

 P. NOTATUM, Fluegge. Guadalajara. (295.) — Undetermined spe- 

 cies. Guadalajara. (243.) (592, 617.) 



Panicu.m colonum, Linn. Rio Blanco. (193.) — P. Kunthii, 

 Fourn. ? Rio Blanco. (207, 208.) — P. bulbosum, HBK. Rio 

 Blanco. (209.) — P. c^spitosum, Swartz. Rio Blanco. (254.) 



— P. DivARiCATUM, Liiin. Tequila. (362.) — P. (§ Ptychophyl- 



lum) ? An excellent forage grass, much used for fodder. 



Tequila. (372.) — P. filiforme, Linn. Tequila, Guadalajara, and 

 Rio Blanco, taking possession of old fields. (366, 454, 502.) — 

 P. paspaloides, Pers. Guadalajara, in water. (429.) — P. Crus- 

 GALLi, Linn., forms. Guadalajara. (430.) — P. virgatum, Linn., 



* Juncacece and Cyperacece determined by Dr. N. L. Bkitton. 

 t GraminecE determined by Dr. Georgi; Vasey. 



