138 
BOTANY 
Quercus densiflora, Hook . & Am. Bot. Beech, p. 391; Hook. Ic. 4. t. 380; Nutt. Sylv. 1 . p. 
11. t. 5. Hill-sides on the Yuba, near Dovvnieville, California. There are no acorns, and only- 
old decayed cups of the preceding season, which show the characters very imperfectly. We are 
not certain hut our specimens may belong to a form of the preceding species. 
Quercus Emoryi, Torr. in Emory’s Rep. Ip. t. 9. San Francisco Mountain, and Aztec Pass, 
New Mexico. A species of Phoradendron frequently grows on this oab. 
Quercus agrifolia, Nee. in Ann. Sc. Nat. 3, p. 211; Hook. Ic. 3, t. 317; Nutt. Sylv. 1 p. 5, t. 2. 
Corte Madera, and Laguna of Santa Rosa Creek, California ; April, May; with male catkins 
and old acorns. This is a dwarf species in most situations ; often loaded with fruit when only 
2 or 3 feet high. Sometimes, however, it becomes a tree 40-50 feet high, with a trunk of a foot 
or more in diameter. It varies greatly in the size, form, and dentures of the leaves, as well as 
in the size and shape of the acorns. Q. oxyadenia, Torr. in Sitgreaves’ Rep. t. 11, is this species 
with the acorns fully developed. 
Quercus tinctoria, Bartram. Trav. p. 31; Miclix. f. Sylv. 1, t. 24, var. Californica: sinuhus 
folii angustioribus, fructibus majoribus, cupula squamis triangulari-ovatis acutioribus. Hill> 
sides, Napa Valley. This is a common tree in California. It occurs throughout the valley of 
the Sacramento, and as far south as San Diego. We have not been able to point out characters 
sufficient to distinguish it specifically from the Q. tinctoria of the Atlantic States, and yet it is 
probably a distinct species. The qualities of the bark we had no means of determining. It 
presents some diversity in the size and lobes of the leaf; but the acorns vary more than in the 
eastern oak. They are generally larger, and the glands are sometimes more than two-thirds 
immersed in the cup, with the upper scales elongated ; but more commonly the cup is much 
more shallow and the scales more nearly uniform in size. The largest acorns are an inch and a 
quarter long. 
Quercus Garryana, Hook. FI. Bor.-Amer. 2, p. 159; Hook. & Am. Bot. Beech, p. 391; 
Nutt. Sylv. 1 ,p. 1, t. 1. Santa Rosa Creek, California. Dr. Bigelow found it growing only 
about 30 feet high ; but in Oregon Mr. Nuttall saw trees of this species 90-100 feet in height, 
with a diameter of from 3 to 6 feet. It belongs to the section of the genus that includes the 
White Oak. 
Quercus Hindsii, Bentli. Bot. Sulph. p. 55; Torr. Bot. of Calif. & Oregon , U. S. Expl. 
Exped. cum icon, (ined.) Q. longiglanda, Torr. in Fremont’s Geogr. Mem. of Calif. Plains 
near Marysville, Feather River, California. Common in the valley of the Sacramento. Dr. 
Parry found it as far south as Monterey. It is a tall tree with a trunk 3 feet in diameter, and 
is remarkable for the usually great length of its acorns. These are sometimes even two inches 
long, and either tapering to a point, or rather obtuse at the summit. Rarely they are somewhat 
curved. On some trees they are ovate. The cup is tuberculate with the thickened scales. 
SALICACEiE. 
Salix Hindsiana, Bentli. PI. Hartw. p. 336, No. 1956. Swamps and river banks, Mark 
West’s Creek ; April 30, (male ;) also valleys and ravines near Butte Mountains, Marysville, 
California; May 25, (in fruit.) Branches very slender, pale-brown, dull. Leaves about an 
inch and a half long and 2-3 lines wide, thinly pubescent, at first hoary, but when mature pale- 
green on both sides, very acute at each end. Aments appearing with the leaves, pedunculate, 
terminating the short lateral branchlets, about an inch long ; the male often 2-3 together. 
Filaments hairy below the middle. Capsules sessile, pubescent, abruptly narrowed to a long 
beak ; style short, but distinct; stigmas with 2 linear lobes. This species is allied to S. exigua. 
Nutt. Sylv. I, p. 15, but the leaves are narrower, perfectly entire, and not silky ; the fertile 
aments shorter, etc. It also resembles No. 1813, Wright, but that has glabrous fruit, bright 
reddish-brown branchlets, paler leaves, etc. 
Salix lasiandra, Bentli. 1. c. No. 1954. Near Bolinas Bay, California; April, in fruit. The 
