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FOREST-TREES OF THE UNITED STATES. 1d 
The leaves and young twigs are employed in tanning, and are thought 
to be equal in strength to those of the Sicilian Sumac. 
No. 66. Rhus glabra, L.—Smooth Sumac.—Hastern United States. 
No. 67. Rhus microphylla, Eng.—Small-leaved Sumac.—Texas and 
Southwest. 
No. 68. Rhus copallina, L.—Dwarf Sumac.—EHastern United States. 
No. 69. Rhus Metopium, L.—Coral Sumac.—South Tlorida, This 
grows in South Florida, where it attains a height of 20 to 30 feet. It is 
very poisonous. In the West Indies, it is called Mountain Manchineel 
and Burnwood. 
No. 70. Rhus venenata, DC.—Poison Sumac.—EKastern United States. 
No. 71. Rhus integrifolia, Nutt.—One-leaved Sumac.—South California. 
This species and the succeeding do not have pinnate leaves. They are 
found in Southern California. The red berries of this species are used 
by the Indians to make a cooling acid drink. 
No. 72. Rhus Laurina, Nutt.—Laurel Sumac.—South California. A 
low spreading tree, much branched and very leafy, and exhaling to a 
considerable distance an aromatic odor. The flowers are somewhat 
showy, and the plant would be fine in cultivation. 
No. 73. Pistacia Mexicana, H. B. K.—Mexican Pistacia-tree.—Texas. 
No. 74. Schinus molle, L.—Pepper Tree.—Southwestern United States. 
Cultivated as an ornamental tree in California and in Mexico. It is preb- 
ably introduced. ‘The berries have the taste of black pepper. 
VITACEA. 
No. 75. Vitis estivalis, Michx.—Summer Grape.—Eastern United 
States. 
No. 76. Vitis cordifolia, Michx.—Winter or Frost Grape.—Eastern 
United States. 
LEGUMINOS 4. 
No. 77. Robinia Pseudocacia, L.—Common Locust.—Pennsylvania and 
southward. Hardly found north of the fortieth degree of latitude ex- 
cept in cultivation. It is chiefly foundin the Alleghanies and the mount- 
ainous parts of Kentucky and Tennessee. Itis a beautiful tree, attain- 
ing a height of 50 feet and upward. The wood is hard, compact, and 
very durable, much used in ship-building. 
No. 78. Robinia viscosa, Vent.—Clammy Locust.—Virginia and south- 
ward. A smaller tree than the preceding, and much more rare, being 
confined to the mountains of Georgia and North Carolina. 
No. 79. Robina Neo-Mexicana, Gray.—New Mexican Locust.—New 
Mexico and Arizona. A small tree, rarely exceeding 20 feet. Very 
tborny. Grows in stony ravines at the foot of mountains in New Mex- 
ico and Arizona. 
No. 80. Olneya tesota, Gray.—Palo de Hierro.—New Mexico and Ari- 
zona. . 
No. 81. Piscidia Erythrina, l.—Jamaica Dogwood.—South Florida. 
A tolerably large tree of South Florida; also grows in the West Indies. 
Its blossoms resemble those of the Locust. The wood is heavy, coarse- 
grained, and durable. 
No. 82. Cladrastris tinctoria, Raf.—Yellow Wood.—Tennessee and 
Kentucky. This is one of the handsomest flowering-trees of the Locust 
kind. It grows chiefly in the mountainous regions of Kentucky and 
Tennessee. The wood is yellow, and has been used in domestic dyeing. 
