. 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. 508 DRTNABIA DRYOPTERIS DBYNABIA (Greek, oak-like). Polypodictcece. A gen\i* of 10 or more Bast Indian ferns, with round naked sori, allied to Polypodium, but with a fine net-work of veins, with free included veinlets, and with either a separate oak-like leaf or with the lower portion of the spur-bearing leaf d
. 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. 508 DRTNABIA DRYOPTERIS DBYNABIA (Greek, oak-like). Polypodictcece. A gen\i* of 10 or more Bast Indian ferns, with round naked sori, allied to Polypodium, but with a fine net-work of veins, with free included veinlets, and with either a separate oak-like leaf or with the lower portion of the spur-bearing leaf deeply pinnatiild like an oak leaf. D. querciJdlia, with two sorts of Its., the spore-bearing 2-3 ft. long, is the commonest species. D. rigidola, Sw. (I>. diversifdlia, R. Br.), a similar but larger species from the same region, also appeared at one time in the American trade, but the species are seldom seen in cultivation in this country. D. mnscsfdlia is occa- sionally seen in fine collections, where it is grown for its striking, simple foliage, which reminds one -of the Bird's Nest Fern (Thamnopteris). It is really a Polypodium, which see for description. L. M. Undekwood. DKT6PTEEIS (Greek, oak-fern). Polypodihcem. "Wood Fern. A widely distributed genus of handsome ierns with dissected foliage and bearing round sori covered with heart-shaped or reniform indusia, which are ibced at the center or along the sinus. The veins are either wholly free or the lowest united. A consider- able number of our common wood ferns belong to this genus. The species have been variously known under the names Lastrea, Aspidium, and Nephrodium. Other species sometimes referred to under this genus may be found under Polystichum. For D. acrostichoides, see Polystichum ; for D. decurrens, see Sagenia. In North America, known mostly as Aspidiums. For culture, see Perns. Not the same as Doryopteris. A. Veins entirely free. B. Pinnce lobed less than one-third to midrib. hirtipes, Kuntze {JVephrd
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