. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 38 AILANTHUS AKEBIA _ a young state. For street planting, the fertile plant ' only should be used, because the male exhales a disa- greeable odor when flowering, and the pollen is said to cause catarrhal troubles. It grows in almost any soil, but best jn a light and some- whatmoist one, and stands dust and smok
. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 38 AILANTHUS AKEBIA _ a young state. For street planting, the fertile plant ' only should be used, because the male exhales a disa- greeable odor when flowering, and the pollen is said to cause catarrhal troubles. It grows in almost any soil, but best jn a light and some- whatmoist one, and stands dust and smoke well. Var. erythro- c£lrpa {A. erytJirocdrpa, Carr. A. rkbra, Hort.). Lvs. darker green above and more glaucous beneath : fr. bright red, very effective iu late summer and autumn. Var. Lvs. very large, drooping.—The Allanthus foliage gives a tropi- cal effect when the growth is very strong. If plants are cut back to the ground after they have become established{in two or three years after planting), they will throw up very strong shoots and make an excellent screen, as shown in Fig. 55. This practice may be repeated year after year. Sumacs, pau- lownias,basswoods, mulberries, and other fast-growing things may be treated in this way. The Ailanthus foliage is very like that of the Cedrela (which see for illustration of differ- ences) . A. excilsa, Roxbg. Tall tree: lvs. 3 ft. long, abruptly pinnate; leaflets 20-28, teeth without glands. India. Can be grown only in tropical re- gions or in the hothouse.—A. fla- v&scenSy Carr. = Cedrela Sinensis. Alfred Rehder. AIBA (an ancient Greek name for Darnel). Gramin- ece. Hair Grass. A genus containing delicate annual grasses, with slender, loose panicle-branches: spikelets very small, of two perfect contiguous flowers: flowering glume acutely 2-cleft at the apex, bearing a slender twisted awn below the middle. Eu., N. Afr. — This genus is much confused with Agrostis by florists. Nat. from Eu. and cult, for
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