. British ferns and their varieties. Fig. 228. P. ang, grandidens (centre of frond). Grandidens (Fig. 228).—This form has been repeatedly found,and although marred by irregularities, its subdivisions are so deeplytoothed and peculiar, that it figures in all collections ; the mostremarkable form of it is G. Pearson, in which the pinnulets are cut into very fine~seg-ments ; this was raised by Messrs. Pearson, of Nottingham, apercentage of it, singular to say, always occurring in sowings ofa very fine symmetrical decomposite form, decompositum Pearson,in association with a far superior plumose fo
. British ferns and their varieties. Fig. 228. P. ang, grandidens (centre of frond). Grandidens (Fig. 228).—This form has been repeatedly found,and although marred by irregularities, its subdivisions are so deeplytoothed and peculiar, that it figures in all collections ; the mostremarkable form of it is G. Pearson, in which the pinnulets are cut into very fine~seg-ments ; this was raised by Messrs. Pearson, of Nottingham, apercentage of it, singular to say, always occurring in sowings ofa very fine symmetrical decomposite form, decompositum Pearson,in association with a far superior plumose form (plumosum Pearsonii),a fair rival to the Jones and Fox plumosums. Hirondelle.—Found in Dorset by Dr. Wills ; pinnules, withswallow-like outline, whence name ; PLATE XXX. Polystichum annulare varimbricahmi Polystichum angulare varlineare P. ang. vartruncatum THE .POLYSTICHUMS 203 Imbricatum (Plate XXX) .—Found in Somerset by Mr. Elworthy ;fronds narrow, pinnae blunt, and pinnules dense and overlapping ;bulbiferous.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1912
