76 TRANSACTIONS OF THE [JAN. 21, 
EQUISETEA. 
EHquisetum robustum, A. Br. Fossil Creek (250). 
Lquisetum palustre, L. Clark’s Valley (125). 
MUSCI. 
Hypnum rusciforme, Weis. Fossil Creek (282, 283). 
GASTEROMYCETES. 
Lycoperdon atropurpureum, Vitt. Named by Mr. Chas. H. 
Peck. Mogollon Mts. (37). 
GENERAL FLORAL FEATURES OF THE SAN FRANCISCO AND 
MOGOLLON MTS. OF ARIZONA AND NEW MEXICO, AND THEIR 
ADJACENT REGIONS. 
BY H. H. RUSBY, M.D. 
The territory here considered comprises three distinct regions— 
an elevated, open, somewhat barren table-land; a still more 
elevated heavy forest belt, and a low, desert, mostly sandy plain. 
The first comprises the northern and north-eastern portions, 
and is the continuation of the high plateaus of New Mexico and 
Utah. It is traversed by a number of profound canyons, with 
precipitous walls a mile or more in height, and by many others 
of less depth. Itsupports some isolated ridges and peaks besides 
the second region above-named. Upon them occurs some good- 
sized timber, including trees like Pinus ponderosa, Dougl.; P. 
edulis, Eng.; Juniperus occidentalis, Hook.; var. monosperma, 
Eng.; J. pachyphiea, Torr.; Frazinus pistaciefolia, Torr., and 
Quercus of several species; the largest and most important 
being Q. undulata, var. Gambelii, Eng., and Q. oblongifolia, 
Torr. Occasionally we see a tree of Juglans rupestris, Eng. 
Among the smaller trees and shrubs, the most conspicuous are 
Morus microphylla, Buckley; Cercocarpus parvifolius, Nutt. ; 
Forestiera -Neo-Mexicana, Gray; Garrya Fremontii, Torr.; 
Ribes aureum, Pursh; Arctostophylos pungens, H. B. K., and a 
number of small oaks, notably Q. grisea, Liebm., and Q. hypo- 
leuca, Eng. These elevated portions, with some river-bottoms, 
where we often find cotton-woods and sycamores and the 
gigantic Alnus oblongifolia, Torr., constitute about the whole 
of the forest area of this division. The entire level portion of 
the plateau is destitute of everything larger than shrubbery, 
characteristic among which may be mentioned the Yuccas, 
chiefly Y. baccata, Torr., and Y. angustifolia, Pursh, Arte- 
