MAMMALS OF THE MEXICAN BOUNDARY. 



91 



Juniperus pacliyphlcca Torrey. 



Yucca brevifolia Torrey. 



Yucca constricta Buckley. 



Juglans rnpestris Engelmann. 



Salix nigra Marshall. 



Salix occidental is longipcs (Anders- 

 son) Bebb. 



Populux: frciiiuntii Watson. 



Quercus gamhcUl Nuttall. 



Q Kerens oblongifoUa Tori'ey. 



Quercus arizonica Sargent. 



Quereus reticulata Ilnmboldt and 

 Bonpland. 



Quercus emoryi Torrey. 



Quercus clirysoJepis Liebniann. 



Quercus hypoJeuca Engelmann. 



Celt is occideiitalis Linnam 



Moras eeltidifolia Humboldt, Bonp- 

 land, and Kunth. 



PI at anus wriglitii Watson. 



Cereocarpus parvifolius paucidentatus 

 Watson. 



Prunus salicifoiia Humboldt, Bonp- 

 land, and Knutli. 



Prosopis glaiidulosa Torrey. 



Robiiiia neomexica)ia Gray. 



Acer saceliarum grandidentatum (Nut- 

 tall) Sargent. 



Rlianinus purshiana de Candolle. 



ArJjutus arizonica (Gray) Sargent. 



ArctostapJnjIos pungens Humboldt, 

 Bonpland, and Kunth. 



Fraxinus relutimt Torrey. 



JMost prominent of the shrubs and hirge phmts are the following 



Yucca haccata Torrey. 

 Yucca glauca Nuttall. 

 Nolina texana Watson. 

 Xolina Jindheimeriana (Scheele) Wat- 

 son. 

 Dasylirion ivheeJeri Watson. 

 Agave palmeri Engelmann. 

 Berheris tcilcoxU Kearney. 

 Holodiscus dumosus (Nuttall) Heller. 

 Whipplea ntahensis Watson. 

 Ribes vlscosissimun) Pursh. 

 Rhus toxicodendron Linnieus. 

 Rhus trilobata Nuttall. 

 Rhamnus californica Eschseholtz. 

 Vitis arizonica Engelmann. 

 Opuntia lindticinieri Engelmann. 



Rubus deliciosus neoniexicauus (Gray) 



Kearney. 

 FaUugia paradoxa (D. Don) Endlicher. 

 Mimosa biuncifera Bentham. 

 Mimosa grahami Gray. 

 Mimosa dysocarpa Bentham. 

 Acacia filiculoides (Cavanilles) Trel- 



ease. 

 Erythrina flabelliformis Kearney. 

 Ptelea l)aldwi)iii Torrey and Gray. 

 Opuntia arborescens Engelmann. 

 Garrya wrightii Gray. 

 Symphoricarpos oreophilus Gray. 

 Lonieera ciliosa (Pursh) Poii*et. 

 Baecharis glutinosa Persoon. 



The Animas (meaning spirit) Range is a continuation of the San 

 Luis Mountains, Avhich, in turn, is connected ^vith the Sierra Madre 

 of Mexico. It lies wholly in New Mexico, the greater portion as well 

 as all of the other higher peaks of the San Luis Mountains being in 

 old Mexico. These two ranges are barel}^ separated where the wagon 

 i-oad passes between them through San Luis Pass. The highest point 

 of the pass is 122 meters (400 feet) higher than the Animas Valley at 

 Monument Xo. 66 (aneroid readings two hours apart), giving it the 

 altitude of 1,699 meters (5,574 feet).' The trees of the Animas Moun- 

 tains are the same as those of the San Luis Range, with the addition 

 of a zone of aspen (Popi/las tremuJo'ide^, MichauxJ at the top. The 

 main Animas Peak is a more eveidy rounded conical or mound-like 

 eminence than any of the peaks of the San Luis Range, and as a result 

 of this the forest zones are better defined. The northeast side has the 



