412 PROCEEDINGS OF THE ACADEMY OF [June, 
VI. THe Basoguivart MovunNtmvAINS. 
We had not intended at first to visit the Baboquivaris. From 
our camp, above 7,000 feet in the Santa Ritas, the long ridge, sixty 
miles distant, bounded the western horizon. We could see the 
wonderful obelisk of Baboquivari Peak catch the morning sun 
while the great valley between slept in dusk. At evening it stood 
silhouetted, velvet black, between the purple valley and flaming sky. 
To visit this range, beyond which there is no water, became an 
obsession, and finally we made the two-day journey by wagon, 
camping midway on Sopori Creek, where there was a little stagnant 
water for the horses. 
The Baboquivari Range is a single, long, north and south ridge with 
numerous short lateral spurs. Its chief landmark, Baboquivari 
Peak, is a huge obelisk of dull red rhyolite, standing on the main 
axis of the range, flat topped, its sides practically vertical. The 
foothills and lower slopes of the range have many barrel cacti, 
opuntias, agaves, very few giant cacti. The lower courses of the 
canyons are green with mesquite and cat-claw. ~The higher moun- 
tains are grassy and lack large cacti; only a flat Mamillaria and the 
little rainbow cactus were noticed. There is some scattering oak, 
size of a peach tree, on western and northern slopes, and very few 
stunted pinyons around the high crags. The herbaceous plants are 
chiefly the same as in the Santa Ritas. Sycamore Canyon has a 
richer sylva—buttonwood, walnut, hackberry, a fine dark-leaved 
species of oak, ete. There is water in Oro Fino and Sycamore 
Canyons, and we found some also near the head of Thomas Canyon, 
about half a mile below the peak. Near the mouth of Sycamore 
there was in 1910 a foresters’ house (which we occupied), a corral 
andapump. Much further up there is running water. Our collect- 
ing stations, enumerated below, are shown on the accompanying 
sketch map.° 
The following collecting stations were found: 
Station 21. Mt. Mildred, north side of the butte at summit of 
the talus slope. 
° We are indebted to Professor R. H. Forbes, of the University of Arizona, for 
information correcting the names we had heard of the canyons. Sycamore 
Canyon is also known as Brown’s or Wasson and Brown’s Canyon. Sabino 
Otero has for many years ranged cattle in this canyon, and from this some persons 
have called it Otero Canyon. We were also given the name Baboquivari Canyon 
for Oro Fino Canyon. No topographic map has been published, so that hasty 
note-book sketches made by one of us in course of a long day’s tramp from Oro 
Fino Canyon to the Peak and down to camp in Sycamore Canyon, have been 
utilized to locate our type localities. 
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