ZUNI AND COLORADO RIVERS. 169 



cymo ; the bracts somewhat subulate. Involucre about two lines long, and less 

 than a line in breadth. Flowers exserted, erect, larger than the involucre. 

 Bractcoles filiform, glandularly pubescent. Filaments pubescent. Styles longer 

 than the ovary. Achenium triquetrous. This plant differs from E. effusum in 

 the leafy and more slender stems ; much narrower leaves, and nearly toothless 

 involucres, as well as in some less important characters ; but it may be only a 

 variety of that species. 



NYCTAGINACE.K. 



Abronia cycloptera, Gray, in Sill. Journ. (a. s-_-r. ) 15, p. — . A. (Tripterocalyx ) 

 micrantha, Torr. in Frem. 1st rep., p. i)G, and in Emory's rep., p. 149 ; Choisy. 

 in D. C. Piodr. 13, p. 436. Near the puebla of Zuni ; September. 



A. mellifera, Dougl. mss. in Hook. Hot. Mag. t. 287'J : Choisy, 1. c. Carissa 

 creek, California ; December. 



Oxybaphus angustifolius, Sweet, Hort. Brit. p. 567 ; Choisy, in D. C. Prodr. 13, 

 p. 433. Allionia linearis, Pursh, Fl. 2, p. 728. On the Zuffi, and near the puebla 

 ofLaguna; August, September. 



Quamoclidivn mulliflorum, Torr. ; Gray, 1. c. Oxybaphus multiflorus, Torr. in 

 Ann. Lye. N. York, 2, p. 237. Nyctagineu ? Torreyann, Choisy, L c. Rio La- 

 guna ; August. 



SALOLACEiE. 



Cycloloma platyphyllum, Moq. Chenop., p. 18, and in D. G, Prodr. 13, (pars 

 post.) p. 60. Salsola platyph.illa, Fl. 1, p. 174. Kochia dentata, Willd Enum. 1, 

 p. 28, t. 28. Near the puebla of Zufii ; September. Much branched from the 

 root, and widely spreading. 



Sarcobatus vcrmicularis, Torr. in Emory r s rep., p. 150. S. Maxijniliana, Nees. 

 Fremontia vcrmicularis, Torr. in Fremont's 1st and 2d reports. Baits vcrmicula- 

 ris, Hook. Ojo del Harra, on the Zuni ; August. 



Obione canescens, Moq. Chenop., p. 74 : and in D. C. Prodr. 13, (pars post.) p. 

 112. Atriplex canescens, Pursh, Fl. 2, p. 370. Plerochiton occidentale, Torr. and 

 Frem. in Frem. 2d rep., p. 318. P. canescens, Nutt. in Jour. Acad. Phila. (n. ser.) 

 1, p. 184. Obione occidentale, Moq. 1. c. On the Little Colorado of New Mexico, 

 and on the Colorado of California ; October, November; in fruit. 



O. tenliformis : caule suffrueticoso ramosissimo inerino subtercti ; ramis pani- 

 culatis ; foliis orbiculari-deltoideis, vcl subcordatis, sinuato-paucidentatis vel sub- 

 integris, petiolatis, lepidoto-farinosis, cinereo-incanis ; fructibus sessilibus nume- 

 rosissimus ad ramulos congestis ; bracteis orbicularis intcgris vel remote rcpando 

 denticulatis basi coalitis ; disco nudo. On the Colorado of California ; November; 

 in fruit; Also found by Major Emory on the Gila, near its mouth. 



