FOREST-TREES OF THE UNITED STATES. LG 
RUBIACE2. 
No. 161. Cephalanthus occidentalis, L., var. Californica.—Button-bush. 
—Oalifornia. This is seldom more than a shrub; but in California it 
sometimes grows 25 to 30 feet high, with a trunk 12 to 20 inches in diam- 
eter. 
No. 162. Guettarda Blodgettti, Suttle-—South Florida. 
No. 163. Randia clusiefolia, Chap.—Seven-years Apple.—South 
Florida. 
No. 164. Pinckneya pubens, Michx.—Georgia Bark.—South Carolina to 
Florida. A small tree in the lower districts of Georgia and in Florida, 
rarely exceeding the height of 25 feet and a diameter of 6 inches. The 
bark is extremely bitter, and has been employed in the treatment of 
intermittent fevers. It is closely related botanically to the Cinchona, 
which furnishes the Peruvian bark of commerce. 
ERICACE A. 
No. 165. Vaccinium arborewm, Marshall.—Farkleberry.—Virginia and 
southward. A shrub or small tree sometimes 20 feet high, growing from 
Virginia and Southern Illinois southward. 
No. 166. Oxydendrum arboreum, DC.—Sourwood or Sorrel-tree.— 
Pennsylvania and southward. This tree grows chiefly in the mountain- 
ous districts of the Alleghanies from Pennsylvania southward. In fertile 
valleys, at the foot of the mountains, in North Carolina and Tennessee, 
it attains a height of 50 feet. The common name sour-tree is derived 
from the acidity of its leaves. The flowers are white, and in spikes 5 
or 6 inches long. They are very ornamental, and begin to be produced 
when the tree is 5 or 6 feet high. 
No. 167. Kalmia latifolia, L.—Calico-bush or Mountain Laurel.—Penn- 
sylvania and southward. <A _ beautiful evergreen shrub, sometimes 
attaining the size of a small tree. Itis very ornamental and deserving 
_ of cultivation. 
No. 168. Rhododendron maximum, L.—Rose Bay or Great Laurel.— 
Pennsylvania and southward. Like the preceding, an evergreen shrub 
of great beauty. It has been much improved by cultivation. 
No. 169. Rhododendron Californicum, Hook.—California Rhododen- 
dron.—Pacific coast. 
No. 170. Arbutus Menzies, Pursh.—Madrone-tree.—California and 
_ Oregon. 
No. 171. Arbutus Texana.—This species or variety grows in Texas. It 
is mostly a large shrub; sometimes, however, becoming 25 feet high 
and 8 or 10 inchesin diameter. The leaves are smaller and the flowers 
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less panicled than in the California species. The timber is said to be 
almost imperishable. 
No. 172. Arctostaphylos glauca, Lind].—Manzanita..—Oregon and Cali- 
fornia. There are several species of this genus on the western coast, 
_mostly shrubs or small trees, which bave been much confused. The 
) 
_ Specimen under this number is from Southern California, and has a large 
_ drupe-like fruit, with a consolidated nut. These berries are pleasant to 
the taste, and much employed as food by the Indians of that region. 
No. 173. Arctostaphylos tomentosa, Doug.—Manzanita.—California and 
Rocky Mountains. 
No. 174. Arctostaphylos pungens, H. B. K.—Manzanita.—Ca‘ifornia 
and Rocky Mountains. 
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