MAMMALS OF THE MEXICAN BOUNDAKY, 



95 



Floi'a of Guadalupe Canyon. 

 as follows: 

 The trees are : 



-Here the distribution of plant life is 



VcH'is occidciitalis Linnneus. 



Ccltis reticulata Torrey. 



Moras ceUidifoJia Humboldt, Bon-- 

 l)land, and Kunth. 



Platan IIS ir right ii Watson. 



Vaiiqitclinia caJifornica (Torrey) Sar- 

 gent. 



Acacia cunstricta Benthani. 



Prosoi)is sp.o 



Sapindus iiiargiiiatiis Willdenow. 



Arctostapliijlos piiiigcns Humboldt, 

 Bonpland, and Kunth. 



Biimelia rigida (Gray) Small. 



Fraxiniis vcliitina Torrey. 



Chilopsis linearis (Cavanilles) Sweet. 



Pinns cemhroides Zuwarini. 



Piniis cliihiiah liana Engelmann. 



Juniperus nionospcnna ( Engelmann ) 

 Sargent. 



Juniperus pachijplilaa Torrey. 



Yucca hrevi folia Torrey. 



Juglans rupestris Engelmann. 



Salix nigra Marshall. 



Salix occidentalis longipcs (Anders- 

 son) Bebb. 



Salix taxifolia Humboldt. P>()n[)land, 

 and Kunth. 



Populus wislizenl (Watson) Sargent. 



Quercus oblongifolia Torrey. 



Quercus arizonica Sargent. 



Quercus emoryi Torrey. 



Other conspicuous plants: 



Selaginella rupestris ( L i n n ;i? u s) 

 Spring. 



Yucca baccata Torrey. 



yolina lindheimeriana (Scbeele) Wat- 

 son. 



Dasylirion ivheeleri Watson. 



Agave schottii Engelmann. 



Agave palmeri Engelmann. 



Mimosa graliami Gray. 



Erytlirina flabelllformis Kearney. 



Fouquieria splendens Engelmann. 



Rhus toxicodendron Linnaeus. 



Station No. 25. — San Bernardino Ranch. Camp was made at 

 Monument No. 77, in a mesquite flat between the San Bernardino 

 Springs and the neighboring San Bernardino River, 310 kilometers 

 (193 miles) from the Rio Grande, at an altitude of 1,133 meters 

 (3,717 feet). The rock is rhyolite and basalt. The San Bernardino 

 River (head of the Yaqui), rising in Arizona, is wooded with willow, 

 Cottonwood, boxelder, ash, and mesquite; a few red junipers grow 

 on the adjacent hills; and the creosote bush, mesquite, acacia, and 

 ocotillo occup3^ the stony mesas and arroyos wdiich constitute the 

 major portion of the region. The broad meadows below the San Ber- 

 nardino Springs are now covered by grazing herds; but at the time 

 of Emory's Survey they were occupied by a dense growth of cane, 



a The Yaqui Basin form of mesquite replaces Prosopis glandulosa Torrey 

 west of the San Luis Mountains, entering Guadalupe Canyon from the Animas 

 Valley. It was found as high as 1.G2.1 meters (.').325 feet), extending through 

 the canyon to the San Bernardino River, where fine mesquite trees were found 

 in the river bottom at the altitude of 1,189 meters (3,900 feet). 



Rhus virens Lindheimer. 



Rhus glabra Linnaeus. 



Mortonia scabrella Gray. 



Tit is arizonica Engelmann. 



Parthenocissus quinquefolia (Lin- 

 naeus) Planchon. 



Cactus (several species). 



Echinocactus (several species). 



Opuntia (several species). 



Ibervillea Undheimeri (Coguiaux) 

 Greene. 



Baccharis glutinosa Persoon. 



