98 
BEAUTIFUL FERNS. 
p. 105. — Ruprecht, Distr. Krypt. Vase, in Imp. Ross., p. 35. — 
Kunze, in Sill. Journ., July, 1848, p. 83. — Mettenius, Fil. 
Hort. Lips., p. 92; Aspidium, p. 55. — Eaton, in Gray’s Man- 
ual, ed. V., p. 666. — Milde, in Nov. Act. Acad. Nat. Cur., 
xxvi., ii., p. 507: Fil. Eur. et Atl., p. 118. — Miquel, Prolusio 
FI. Jap., p. 1 1 7. 
Polypodium Filix-mas, Linn^us, Sp. PI. p. 1551. 
Polystichum Filix-mas, Roth, “FI. Germ., iii., p. 82.” — Koch, Syn. FI. 
Germ, et Helv., ed. iii., p. 733. 
Nephrodium Filix-mas, Richard, “in Desvaux, Mem. Soc. Linn., vi., p. 
60.” — Hooker, Brit. Ferns, t. 15; Sp. Fil., *iv., p. 117. — 
Hooker & Baker, Syn. Fil., p. 272 (excl. vars. y and <5). 
Dryopteris Filix-mas, Schott, Gen. Fil. — Newman, Hist. Brit. Ferns, 
ed. iii., p. 184. 
Lastrea Filix-mas, Presl, Tent. Pterid., p. 76. — Moore, Brit. Ferns, 
Nat. Pr., t. xiv, xv, xvi, xvii. 
Var. incisum, Mettenius: — Frond ample, two to three feet long, 
scantily chaffy on the rachis; segments rather distant, lanceolate, taper- 
ing to a sub-acute point, incised on the margins with serrated lobules; 
indusium rather delicate, in age shrivelling or falling off. — Aspidium, 
p. 55; Milde, Fil. Eur. et Atl., p. 120. — Lastrea Filix-mas, var. incisa, 
Moore, l.c. — Nephrodium Filix-mas, var. affine. Hooker & Baker, l.c. 
Var. paleaceum, Mettenius: — Frond ample, two to three feet long, 
stalk and rachis very chaffy with ferruginous or blackish scales; seg- 
ments oblong, truncate, nearly entire on the margins; indusium coria- 
ceous, the edges much incurved, sometimes splitting in two. — Aspidium, 
p. 55; Milde, Fil. Eur. Atl, p. 12 1. — Lastrea Filix-mas, palcacea, 
Moore, l.c. — Aspidhmi paleaceum, Don, “Prodr. FI. Nepal., p. 4;” 
Fournier, PI. Mex., Crypt., p. 92. Aspidium parallelogram 7 num, Kunze, 
