. 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. A sorus or fruit- dot of a Fern. greater number of genera, ranging from 150 to 250, or even more. In the very unequal treatment by Diels in Die Natiii'liolien Pflanzeufamilien (Engler-Prantl), some 120 genera are recognized. A somewliat similar difference prevails in regard to the number of species. The Synopsi
. 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. A sorus or fruit- dot of a Fern. greater number of genera, ranging from 150 to 250, or even more. In the very unequal treatment by Diels in Die Natiii'liolien Pflanzeufamilien (Engler-Prantl), some 120 genera are recognized. A somewliat similar difference prevails in regard to the number of species. The Synopsis Pilicum of Hooker and Baker(1874), supplemented by Baker's New Ferns (1892), recognizes some 2,700 species, i It is the too common tendency j in this work (1) to fail to rec- ognize many valid species which have been described by German and French botanists, and (2) to mass under one name very diverse groups of species from distant quarters of the worldâ from 8 to 10 species not infre- quently appearing as a single so-called "variable ; When we add to the number represented by these two omissions the species recently described, the num- ber of Perns will approximate 4,000, and possibly exceed that number. New forms are constantly coming in from the less explored parts of the world, and within the last few years several new species have been described from the United States, including some from the bet- ter known portions. Of this number some 200 species are in occasional cultivation in America, but the spe- cies that form the bulk of the Fern trade do not exceed two dozen. In Europe several hundred species have long been in cultivation. Most of the species thrive best in the insular regions of the trop- ics, the island of Jamaica alone furnishing 500 species and Java nearly 600. About 165 species are native in the United States, representing some 35 genera; our native species are so widely dis- ti'ibuted that not more than from 25 to 50 will be found with-
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