CONTRIBUTIONS TO WESTERN BOTANY NO. 15 107 



a yellow-spined burr. Vegetation 10 feet high. 



'^nii^ station, a little place, ^ome grass, mountains to the east, 2,000 

 to 3,000 feet high, 10 miles more or less. Mistletoe, Pedilanthus, mesquit. 

 Vegetation 15 feet high. Fouquieria, much grass, big cardon ^dth about 

 9 ribs, white-barked Luguminous tree. Cereus Thurberi is about 15-ribbed 

 apparently here. Vines. Much flat Opuntias, also the Cyllndq>untia9. 

 Fouquiena penin^ularis very common, little grass[ Mesquit very common, 

 Cylindropuntias 2 species, one a slender one.. Vegetation 8 feet high. 

 Much cylmdopuntia, Bursera with smoodi and dark and birch-like bark. 

 Olneya. The big cardon (Pringlei) has flowers 3 inches long, no slender 

 tube as in the petaiyas. Smooth and spineless Opuntia. Sea not far off 

 to tha west. Leguminous tree 1-2 feet diameter and 15-20 feet high, grav 

 r>ark, not checked, not a Leguminous tree but a Capparis, evergreen, palo 

 verde. Cereus Thurberi has 11-14 ribs, the small species has 5 ribs. 



Bacavechi station. Small adobes. Many Leguminosae still. Ascle- 

 pias^ subulata, long-leaved Encelia still common. Many farms, good soil, 

 no irrigation, half of farms uncultivated. Amaranthus fimbriatus verj* 

 common, Zizyphus, bottle-brush, cactus, mucTi Cyllndropuntia, much palo 

 verde. Echinocactus with twisted ribs often leafless Bursera. Fouquieria 

 bark very green to base, flakes up some. Vegetation very dry, all flat 

 region. Kilometer 209, Mimosa. Good roads. Vegetation 8-10 feet high, 

 mostly mesquit. Some palo verde, a few cactus. Much Bo^rhavia, also 

 flat Euphorbias. 



Navajoa, a big town, kilometer ahout 1^8. Mountains in the far 

 east. Yaqui river 100 feet wide, ferrjdng an auto across. Com fields, 

 dates, bamboo, Tamarindus, Cleome Sonorae, Nicotana glauca, Bacchari; 

 viminea, flat and spineless. Opuntia, 2 species of Cardon, Cylindro- 



catsclaw 



and flat cotmtrv. Fou- 



quieria 4-6 feet high. Many Leguminosae. Grass. Now flat and Cylin 

 dropuntias like leptocaulis. Echinocactus with acutish tip, also Emor}-i ? 

 Cereus occasional. Now much Cylindropuntia with spines not yello^-. 

 Yellow-bark Bursera, leafless now. Many Leguminosae, very dry, much 

 dry grass, Cardons scarce. Franseria anibrosioides, palo verde, mistletoe 

 on Leguminosae. Vegetation 10 feet hieh and 



t»ow,^ Bouteloua annuals 

 Calliandra. 



ground 



Cajeme, a large city in the flat region. Mostly mud houses but 

 fine places. Autos of many kinds. Low mountains to fhe north 

 came Encelia, farinosa, Franseria ambrosioides very common, lit 

 Cylindropuntias. A low species of Cereus 3-5 ribbed. Thuri>eri is 



and 



X^ereus, Opuntia 



Brush is all low now, 6-8 feet high. Agave Americana cultivated- Moun- 

 tains near now on the east and low, cattle, 



Esperanza station. Probably 500 people at the station, some soldiers, 

 one with sandals. Quite a town of low huts. Low mesa-like hills 1,000 

 feet more or less high to the northwest and on the east Com. Here we 

 take on a car of soldiers. 'Cucumber vine with sp'iny tniit and red on 

 bush'5, fruit 3 inj^es 'in^ 2, pointed, dry and not densely priddy, tq^par- 



