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Notes on the Trees of the South-west.* — Qucrcus Evwryi, Torr,, 



known as the '^ black oak/' is very common in the country of the 

 Upper Gila. It never grows on the hills, nor far from the beds of 

 the streams, though these may be dry during the greater portion of 

 the year. It delights in a fine gravelly, or sandy soil in open canons. 

 Although the growing wood is not subject to decay, as is the case 

 with the other oaks of this section, I do not know that it is highly 

 esteemed. It is here a tree 40 or 50 feet in height, and proportion- 

 ately stout. Its thick, dark, and glossy foliage would make it a very 

 handsome tree, but for the scraggy appearance given it by its dead 

 twigs and branches. Its acorns furnish the principal September food 

 supply of large flocks of wild pigeons. 



Quercus hypokuca, Engelm,— This handsome little tree I have 

 observed in the Bear Mountains, It scarcely exceeds 15 feet in 

 height, the trunk being stout for the size of the tree. Its long, 

 elegantly pointed, dark green leaves, silvery below, render it hand- 

 some in spite of its gnarled and twisted trunk and branches. It 

 grows only in deep canons, and in the rockiest places. It would be 

 a great favorite as an ornamental tree in those sections where it 

 could be successfully cultivated, 



Quercus undulata, Torr,, grows sparingly In the Bear aod Burro 

 Mountains, and very abundantly in the Mogollon Mountains, where, 

 with the sycamore, it forms about five-sixths of the tree-flora of the 

 canons. The young wood is quite tough and strong; but, as it grows 

 older, it soon becomes brittle and subject to decay. The trunks and 

 main branches, like those of Platamis^ are much twisted, and bent 

 or arched. It grows only in the bottom of the canons, 



QuercMs grisca, Liebm, — This is comparatively a rare tree in the 

 sections which I have visited.- A few trees grow in the San Fran- 

 cisco ^Mountains, and it is rather frequent in the Bear Mountains. 

 Its smaller leaved forms approach the next species in appearance, but 

 it seems to be distinguished from that by its more abrupt manner of 

 taking on fresh foliage; while in the color and appearance of its bark, 



the fruit, 

 Quen 



Q. hypoleuca. I did not see 



w 



I am somewhat in doubt as to whether 



the plants which I have called by this name do not constitute two 

 species, one a good-sized tree, the other shrubby. This tree, if we 

 include its shrubby forms, is probably more abundant than any other 

 in the basin of the Upper Gila, and the adjacent country.' It does 

 not grow upon the plains, but is everywhere abundant in the moun- 

 tams. It clothes many of the gravelly hills, from base to summit, 

 with a dense thicket of scraggy growth. On the higher summits it 

 IS not con>mon, while in partial shades in the canons and near water, 

 It becomes a good-sized, though rather low tree. Its form is strik- 

 mgly like that of a well-grown apple-tree; and a gentle slope, or 

 grassy hollow dotted with good-sized, scattered specimens reminds 

 one strongly of a New England orchard, and is a sight which a lover 



*Continued from page 53. In making up the April number of the Bulletin, 

 Mr. Rushy s name was accidentally omitled from his communication, and the 

 omission was overlooked by us till it was too late lo rectify the error.— Ed- 



