8 FOREST-TREES OF THE UNITED STATES. 
ZANTHOXYLACEA. 
No. 21. Zanthorylum Americanum, Mill.—Prickly Ash; Toothache Tree. 
—Northeastern United States. A shrub or small tree. The bark is 
very hot and aromatic, and is somewhat used medicinally. 
No. 22. Zanthoxylum Carolinianum, Lam.—Southern Prickly Ash.— 
Southern States. A small tree found from South Carolina to Florida 
and westward. The bark is aromatic and tonic. The young stems are 
Spiny, and the old ones more or less covered with tubercles, which have 
developed from the spines. 
No. 23. Zanthoxylum Floridanum, Nutt. _ Satin *Wood. 1,—South Florida. 
No. 24. Zanthexylum Pierota, H. B. K.—False Iron Wood; Yellow 
Wood.—The Gulf States. A small shrubby tree occurring from Florida 
to Texas. The wood is yellow and close-grained. 
No. 25. Pitelea trifoliata, L.—Hop-tree.—Eastern United States. This 
is seldom more than atall shrub. The fruit, a wafer-like seed, grows in 
clusters; is a bitter tonic, and has been used as a substitute for hops. 
No. 26. Ptelea angustifolia, Benth.—Narrower-leaved than the preced- 
ing.—Rocky Mountains; Texas to California. 
SIMARUBIACEZ. 
No. 27. Simaruba glauca, DC.—Quassia; Bitter-wood.—South Flor- 
ida. Found in South Florida by Dr. Blodgett. It occurs in the West 
Indies with another species, the Simaruba amara, the bark of which is 
medicinal, and possesses the same properties as quassia. 
BURSERACE. 
No. 28. Bursera gummifera, Jacq—West India Birch; Gummo 
Limbo. —South Pl orida. The largest of South Florida trees, abounding 
in gum. 
No. 29. Amyris Floridana, Nutt.—Torch Wood.—South Florida. Mostly 
a Shrub, but becoming a small evergreen and elegant tree. 
OLACINEZ:. 
No. 30. Ximenia Americana, L.—Hog Plum.—South Florida. Mostly 
shrubby, but sometimes 20 feet high. It bears a drupe the size of a 
plum, which is yellow and pleasant-tasted. 
MELIACE.Z:. 
No. 31. Melia Azederach, L.—Pride of India; Bread 'Tree.—Natural- 
ized in Southern States. A native of Persia, but quite freely natural- 
ized in some parts of the South. It is there one of the commonest 
ornamental trees. The wood is of a reddish color, solid, durable, and 
taking a beautiful finish. 
ILICINEZ. 
No. 32. Ilex opaca, Ait.—Evergreen Holly.—Southern States. In fa- 
vorable localities, this tree attains a pretty large size, frequently 40 feet 
high, and 12 to 15 inches diameter. The wood is very heavy, compact, 
and fine. grained. It is employed in some parts of cabinet-work. It 
very closely resembles the European Holly. 
No. 33. Ilex Dahoon, Walt.—Dahoon Holly.—Southern States. 
No. 34. Ilex decidua, Walt.—Deciduous Holly.—Southern States. 
No. 35. llex monticola, Gr.—Holly.—Southern States. 
