. The book of choice ferns : for the garden, conservatory, and stove : describing and giving explicit cultural directions for the best and most striking ferns and selaginellas in cultivation. Illustrated with coloured plates and numerous wood engravings, specially prepared for this work . Ferns; Ferns. PTERIS. 299 divided at its summit and each division terminating in a deeply-cut or fimbriated, fan-shaped crest. P. S. gracilis—grac'-il-is (slender),, il^fay. A compact and very distinct variety. Its slender, arching fronds, which are of the same length as those of the typical P. serrulata, are
. The book of choice ferns : for the garden, conservatory, and stove : describing and giving explicit cultural directions for the best and most striking ferns and selaginellas in cultivation. Illustrated with coloured plates and numerous wood engravings, specially prepared for this work . Ferns; Ferns. PTERIS. 299 divided at its summit and each division terminating in a deeply-cut or fimbriated, fan-shaped crest. P. S. gracilis—grac'-il-is (slender),, il^fay. A compact and very distinct variety. Its slender, arching fronds, which are of the same length as those of the typical P. serrulata, are furnished with very narrow leaflets, Avhich do not show any signs of cristation, but are of a most elegant outline. P. S. Leyi—Ley'-i (Ley's), Moore. Of all the freaks of nature in connection with P. serrulata, this variety is undoubtedly the most extraordinary. Its fronds, of normal size, are of upright habit, and their leafy portion is reduced to a broad wing which runs along the rachis and for about lin. at the base of the leaflets. The leaflets are reduced to a narrow, thread-like process 2jin. to 4in. long, curved upwards and very elegant. This curious plant reproduces itself true from the spores, which are disposed on the margins of the broad wing only, the other parts of the leaflets never showing any sign of fructification. It frequently happens that among seedlings of it plants with more or less crested fronds are found, and this character is retained, though it hardly adds to the beauty of the subject. P. s. polydactyla—pol-yd-ac'-tyl-a (many-fingered), Moore. This variety, which is normal as far as size and habit are concerned, has all the points of its leaflets several times forked and frequently much lengthened out.—Nicholson, Dictionary of Gardening, iii., p. Fi^. 86. Pteris serrulata tenuifolia, showing Habit and portion of detached Frond (Habit, 4 nat. size; Portion ol Frond, nat. size). P. S. tenuifolia—ten-ii-if-ol'-i-a (slender-fronded), Moor
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectferns, bookyear1892
