no 



WESTERN^ EOTA.VV SCr J.s 



Parkmsonfa aculeata 



an 



Thuri>cri bottle-brush, Wislizenia Cardiospennum, Hyraenoclea, Encelia 

 cordifolia, very much long-leaved Encelia, ZizypExxs, mesquit, Olneya, 

 catsclaw. Very dry here. Large Cylindropuntia, Allionia, incamata, 

 Hilarfa mutrca^ l6ir and very narrow leaved Bouteloua, Jatropha canescens. 

 Pesquiera station. Scattered Leguminosae, Encelia cordifolia very 

 common, catsclaw, Opuntia leptooaulis, long-leaved Encelia, bottle-brush, 

 another low Ccreus like maritimus, Cereus Thurberi, Olneya, Prosopis, Phil- 

 bertia linearis, Franseria ambrosioides. Country has been washed with 

 water at least 10 feet deep, AUionia incamatsr, Amarantus fimbriatus. 

 Brush now 20 feet high, Capparis, palo verde, Lyciiim, screw bean, 

 H>TOenoclea. River here was % niile wide at flood. Datura Stramonium, 

 Altemanthera languiiiosa, Zizyphus, bottle-brush, Condalia, catsclaw, 

 ?crew bean. Mistletoe, Cereus Thurberi becoming rare, also Fouquieria. 

 Much grass Bursera with brown bark, 2 species of Encelia. Opuntia 



hii^h. 

 near. 



Zrzyphus, Cardiospermum 



Ipo; 



No mountains 



chrysantihemoides 



Carbo. Altemanthera lanuginosa and Encelia cordifolia most com- 

 mon now, Hymenoclea. Whole valley nearly level, vegetation rather (Jense 

 and 20 feet high. Mostly Leguminosae, Baccharis, sergilioides, Wislizenia. 

 Populus Fremonti. 



Pozo. Everywhere here the housese are colTapsed: Some canes of 

 Fouquieria splendens on a fence, Baccharis sergiloides, Lycium, Hymeno- 

 clea in long spikes, PKysalis, flat Euphorbias, "big flat Tribulus, Ipomoea 

 pink-blue, medium sized. Mistletoe, Amarantus fimbriatus, Franseria 

 ambosiodes, Cereus giganteus ? Cottea, Bouteloua prostrata, Aristida gra- 

 cili.s ? Malva, Setaria gliica. No Larrea, palo verde. Vegetation very 



preen 



Camon. Everything as dry as a chip. 



North from Magdalena, November 24, 1926. Sambucus glauca in 



bloom, a tree 20 feet high here. Celtis, Mesquit, some trees 40 feet high 



and 2 feet diameter, Juglans, Populis Fremonto, Hymenoclea, Krameria. 



Baccharis sergilioides, Salix amygdaloides, Zizyphus, Atriplex canescens, 

 Cotton. 



Nogales, January 23, 1927. Saw Yucca data ? on the way from 

 Tucson. It has the habif of Whipplei, but has a trunk 4-6 feet high. 

 Leaves more like those of" Y. angustissima but wider. Inflorenscence that 



Whipplei. Flower peduncle 

 January 



reads 3.6 



oa 



24, 1927. Frost on the ties and car tops at 7 a.m. Barome- 

 10 feet altitude. The divide south reads 3,900 feet. Nearly 

 iouth over the divide from Nogales we are among live oaks 

 ). It is bright and sunny, but frosty. The first stop is 

 o,.->uu leet altitude, where there is a broad meadow and small pond. Saw 

 a camp under a live oak, with a bright fire burning, and a wagon near 

 by. Passed a fruit express train of 14 cars bound north at the summit. 

 Much wood piled high, also many burros grazing. No pinons or junipers, 

 some CelUs occidentalfs, Juglans Califomica with mrstletoe. now a decidu- 



