. British ferns and their varieties. Laati-ea Hlix mas varWiUisonii PLATE XIX L. p. m. cristataangustata L. f. m. abbreviate. ct-istata THE LASTREAS 155 Producta Forster.—Fine slender —A handsome robust, crispy, congested form,resembles pseudo-mas in its tough make and scaly character. Lastrea Pseudo-mas Abbreviata cristata (Plate XIX).—Prettily crested ; found inBorrowdale, Cumberland, by Mr. R. D. Harrison ; a comparativelysmall grower, a foot to eighteen inches. Apospora percristata.—Raised by Mr. Cropper, presumablyfrom L. ps. cristata ; a lovely small - growing Fern, wi
. British ferns and their varieties. Laati-ea Hlix mas varWiUisonii PLATE XIX L. p. m. cristataangustata L. f. m. abbreviate. ct-istata THE LASTREAS 155 Producta Forster.—Fine slender —A handsome robust, crispy, congested form,resembles pseudo-mas in its tough make and scaly character. Lastrea Pseudo-mas Abbreviata cristata (Plate XIX).—Prettily crested ; found inBorrowdale, Cumberland, by Mr. R. D. Harrison ; a comparativelysmall grower, a foot to eighteen inches. Apospora percristata.—Raised by Mr. Cropper, presumablyfrom L. ps. cristata ; a lovely small - growing Fern, with fine fim-briate and crested subdivisions ; any portion layered and keptclose produces prothalli in abundance and young plants shortlyafter ; a unique variety, but unfortunately very delicate in con-stitution ; one of the most interesting varieties of all, since besidesits beauty it is both aposporous and apogamous ; see Life History. Congesta cristata.—A dwarf gem raised by Dr. Lyell.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1912
