136 BOTANICAL GAZETTE [ auGust 
represents remaining parts of a prehistoric, more general devel- 
opment, ¢. g.- 
Cordoba in ausgedehnten Bestinden auftreten. Diese Arten sind sowohl 
von einander, wie auch von der mexikanischen sehr verschieden, so dass die 
phologische wie raumlich de jetzt lebenden Larrea-Arten mehr verkniipften. 
REVIEW OF HALOPHYTIC ELEMENTS. 
Following is a tabulation of halophytic species occurring 
beyond the tropics in North and South America. Certain 
endemic species of Sueda and Atriplex are believed not to be 
related through the cosmopolitan coast species. In no other 
genus, except Prosopis, are species known to occur in the inter- 
vening distance, 7. ¢., over 40° of latitude: 
Lower Sonoran halophytic Chili-Argentine halophytic 
Spirostachys occidentalis. : inata; Argentine. 
P y Spirostachys 1 ({8e"*) © a 
Patagonica; 
Suzeda ; e.g. S. Torreyana and S. suf- Suda ; ¢. g. S. divaricata. 
fruticosa 
Atriplex; ¢. g. A. canescens. Atriplex ; e.g. A. Chilense (Chili) (c/ 
A. cinereum ; Austra 
Frankenia grandifolia, - - = fF, § Toichogonia-cosmopolita ; Chili. 
F. Jamesii, F. Palmeri, related to Neiderleinia juniperoides; Argentine. 
Fagonia cretica Californica, Fagonia cretica } ues Ce 
Larrea Mexicana. Larrea divaricata ; Argentine. 
“es é 
*  cuneifolia aes 
Metharme lanata; Chili. 
Prosopis § Algarobia: P, juliflora, Prosopis § Algarobia ; P. julifiora and 
many others, mostly Argentine. 
§ Strombocarpa, 3 species. § Strombocarpa, 3 species; 
Argentine. 
