. British ferns and their varieties. Ferns. 70 BRITISH FERNS ^5?; this species of leaves rubbed down to dust with plenty of coarse silver sand. Its fronds spring from a tufted rootstock, and have a black, shiny stalk, whence the name. Its subdivisions vary considerably in the direction of greater obtuse- ness or acuteness, the latter appearing to de- pend to some extent on climate. The imported Fern fronds sold in our markets as the "French Fern " are of this species, and are always of the acute variety (Fig. 23). Several marked varieties have been found. Grandiceps (Fig. 24).— Heavi
. British ferns and their varieties. Ferns. 70 BRITISH FERNS ^5?; this species of leaves rubbed down to dust with plenty of coarse silver sand. Its fronds spring from a tufted rootstock, and have a black, shiny stalk, whence the name. Its subdivisions vary considerably in the direction of greater obtuse- ness or acuteness, the latter appearing to de- pend to some extent on climate. The imported Fern fronds sold in our markets as the "French Fern " are of this species, and are always of the acute variety (Fig. 23). Several marked varieties have been found. Grandiceps (Fig. 24).— Heavily crested at frond tip, and with fan-shaped, serrate pinnae. Found in Ireland by the Rev. R. Travers Smith. A similar Fig. 24. Asf^. ad. nig. grai/dice/>s. form was found in Devon. LiNEARE.—A form found by the writer in Cornwall, with very narrow fronds and linear Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Druery, Chas. T. (Charles Thomas), 1843-1917. London : G. Routledge and Sons, Limted ; New York : E. P. Dutton and Co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectferns, bookyear1912
