In California the favorite avenue palm of this feather-leaved type is the Canary Island palm, whose stout trunk, covered with interlacing leaf-bases, wears a crown of plumes that reach fifteen feet in length and touch the ground with their drooping tips. Huge clusters of bright yellow, dry, olive-shaped berries ripen in midsummer.
The date palm of commerce, once confined to the tropical deserts of Asia Minor and North Africa, has been successfully established by the Government in hot, dry localities of the Southwest. Fruit equal to any grown in plantations of the Old World is marketed now from the Imperial and Coachella valleys in California, and from orchards near Phoenix, Arizona. Dry air and a summer temperature far above the hundred degree mark is necessary to insure the proper sugar content and flavor in these fruits, which are borne in huge clusters and ripen slowly, one by one.
Fan-shaped leaves plaited on the ends of long stalks that are usually spiny-edged are borne by the stocky Florida palmettos and the tall desert palm of California, planted widely in cities of the Southwest and in Europe. Several genera of this fan-leaved type are represented in palm gardens, and in the general horticulture of warm regions of this country.
_Abies balsamea_, 258 _Abies concolor_, 257 _Abies Fraseri_, 253 _Abies grandis_, 256 _Abies magnifica_, 254 _Abies nobilis_, 256 _Acacia dealbata_, 187 _Acacia Melanoxylon_, 186 _Acacia_, Palo verde, 190 Acacias, The, 184-187 _Acer circinatum_, 197 _Acer glabrum_, 199 _Acer macrophyllum_, 197 _Acer nigrum_, 195 _Acer Negundo_, 199 _Acer Pennsylvanicum_, 198 _Acer pseudo-platanus_, 200 _Acer rubrum_, 195 _Acer saccharinum_, 196 _Acer saccharum_, 194 _Acer spicatum_, 198 _Aesculus Californica_, 68 _Aesculus glabra_, 67 _Aesculus Hippocastanum_, 65 _Aesculus octandra_, 67 "Ague tree", 131 Alder, Black, 91 Alder, Oregon, 93 Alder, Red, 93 Alder, Seaside, 92 Alders, The, 91-93 Alligator pear, 129 Almond, 152 _Alnus glutinosa_, 91 _Alnus maritima_, 92 _Alnus Oregona_, 93 _Amelanchier alnifolia_, 160 _Amelanchier Canadensis_, 159 American beech, 42 American elm, 210 American holly, 145 American hornbeam, 85 American larch, 278 American linden, 70 Annual rings, 12 _Anona cherimolia_, 171 _Anona glabra_, 170 Apples, The, 147-149 Arbor-vitaes, The, 268-270 Arboreta, xiv _Arbutus Menziesii_, 121 Arnold arboretum, xiv Ash, Black, 204 Ash, Blue, 206 Ash, European, 208 Ash, Green, 206 Ash, Oregon, 207 Ash, Red, 205 Ash, White, 202 Ashes, Mountain, 116-118 Ashes, The, 201-209 _Asimina triloba_, 168 Aspen, 78 Assam rubber tree, 166 Autumn leaves, 19 Avocado, 129