08” 
288 TAKEDA—ASIATIC POLYPODIUMS. 
P. superficiale var. semilinearis, Clarke, Ferns of N. India, 
p- a (1880). 
e: subhemionitideum, Chr. in Bull. Herb. Boiss. vii, p. 5 
(1899). 
Sori per totam aream frondis irregulariter disparsi. 
Inp1A. Nepal (Wallich. n. 274, partim, s.n. P. longifrons) ; 
Bhotan (Griffith). 
MELANESIA. New Guinea: Bismarck Mt. (R. Schlechter, 
Nn. 13,920). 
CuinA. Yunnan: Mengtsz (Hancock, n. 98; Henry, n 
92658). 
Formosa. Bankingsin Mts. (Henry, n. 1489). 
Monstr. anomalum, (Christ) Takeda. 
Syn. :—P. anomalum, Chr. in Bull. Herb. Boiss. vi, p. 201, 
tab. ii, fig. 3, a—d (1808). 
P. heterolobum, C. Chr. Ind. Fil. p. 532 (1906). 
Luzon. Mt. Data, 2250 met. (Loher). 
This is only a monstrous form of this plant. The tendency 
to lobing of the frond is occasionally met with in several species 
-of this genus such as P. excavatum (v. supra), P ovatum, P. 
leucosorum, P. trisectum, P. pteropus, and P. hastatum. This 
phenomenon is very interesting, as it shows how the pinnatifid 
forms of toi ict have been derived from the simple-leaved 
forms. 
8. marginale, Takeda, var. nov. 
Differt a typo soris marginem frondis versus aggregatis, ita 
frons secus costas nuda. 
. Yunnan: Mengtsz (Henry, n. 9265A) ; Yung-chang, 
5000 ft. (Henry, Nn. 13,340). 
18. P. ensatum, Thunberg. 
This fern is not uncommon in the warmer parts of Japan, 
growing on rocks in wet shady localities. As is the case with 
P. normale, the sori are sometimes uniseriate, but sometimes 
i-, tri- or multi-seriate on each side of the midrib, with the 
result that they become more or less irregularly distributed. 
This species has several times been recorded from China in 
various floristic works.* However, there seems to have been 
some confusion with P. ovatum, Wall., and the true P. ensatum 
appears to be of rather rare occurrence in China. So far as I 
know, the only specimens I can safely refer to P. ensatum, 
Thunb. were collected in Milé District, Yunnan (Henry, n. 
ull. Acad. Intern. Geogr. Bot. xi, p. 210 a tht Diels, Fl. Centr. 
= nin, p 95 20) Masten se JounsEine . Soc. xxxix (1911). 
