22 The West American Scientist. . 
Hosackia glabra, Torr. 
Dalea californica, Watson? 
: 1L 
Prosopis julifiora, DC. 
Acacia Greggii, Gray. 
_Olneya Tesota, Gray... 
Prunys ilicifolia, Walp. | 

Adenostoma fasciculatum, H.&A. 
Ribes Menziesii, Pursh ? 
Eulobus californicus, Nutt, 
Petalonyx Thurbeu, Gray. 
Cucurbita californica, Torr.? II. 
Mamillaria 

Etchinocactus Wislizent, Engelm. 
var. 
Cereus Engelmanni, Parry. 
Opuntia basilaris, II. 
a Bigelovii, Engelm. II. 
Opuntia occidentalis, Engelm.? 
“—____]J, 
*Sanbucus glauca, Nutt. 
Gutierrezia californica, T. & G. 
Bigelovia brachylepis, Gray. 
ce graveoleus, Gray. 
Pluchea Corealis, Gray. 
Vigutera Parishi, Greene. 
Porophyllum gracile, Bth. 
Artemisia tridentata, Nutt. 
Senecio Douglasii, DC. 
Stephanomeria virgata, Bth.? 
*Cressa cretica, L. 
*Cuscuta Californica, Choisy. 
*Datura———II. 
*Nicotiana 
*Scrophularia Californica, Cham. 
Pentstemon antirrhinoides, Bth, 
antes centranthifolius? - 
Chilopsis saligna, Don. It. 
Cheilanthes myriophylla, Desv. 
Pellaea Ornithopus, Hook. 
Beleperone Californica, Bth. 
*Salvia Columbariae, Bth. 
Andibertia polystachya, Bth. 
Mirabilis multiflora, Gray. 
Eriogonum fasciculatum, Bth. 
rb trichopodum, Torr. 
rs nudum, Dougl. 
Oxvtheca trilobata, Gray. (dried) 
Chorizanthe laciniata, Torr(dried) 
Atriplex canescens, James. II. 
SimmondsiaCalifornica, Nutt., var, 
Euphorbia polycarpa, Bth. II. 
*Houttuynia Californica, B. & H. 
*Salix ? 
*Populus Fremonti, var. Wislizeni ? 
Quercus pungens, Engelm. 
-Phoradendron juniperinum, Eng.? 
Ephedra Californica, Watson. 
Pinus monophylla, Torr. & Frem. 
Agave deserti, Engelm. II. 
Yucca baccata, Torr. 
‘© Whipplei, Torr. 

*Distichlis maritima, Raf. ° 
Asclepias eriocarpa, Bth. : ; 
Juniperus Californicus, Carr. 
Phacelia —-——-? (dried). 
*Heliotropium Curassavicum, L. 
A few of the above, like the pine, were confined to the sides 
of the canyon; of others only a single individual was noticed, 
and many were not in condition for positive identification. Some 
few grasses and perhaps a few other plants escaped attention. 

II.—Moutu oF San FELIPE CANYON TO BORREGO SPRINGS. 
The second stage of the journey was along the dry washes and 
along the base of the foothills bounding the desert. In the wash 
from the canyon were naturally found many of the same species 
as are noted above, and these we have marked (II) in the above 
list. No additional species were observed in this section, except 
a few composite which we failed to recognize as they were not 
‘in condition.’ It will be noted that the variety of vegetation had 
become greatly reduced, and many of these were confined to the 
San Felipe wash. 
III].—BoRREGO SPRINGS. 
These springs are situated near the propcsed line of the San 
Diego, Cuyamaca and Eastern railroad, at the base of the moun- 
tains. More or less salt and alkali are held in solution in the 
