272 TAKEDA—ASIATIC POLYPODIUMS. 
medium frondis occurrunt, adproximati, sed vix confluentes. 
Rhizoma gracile, paleis ovatis, acuminatis, distincte reticulatis, 
parce ciliato-denticulatis tenuiter obtectum 
Distr.—Japonia occidentalis et borealis (ubi rarior), Corea, et 
Manchuria. 
This variety is fairly invariable, and is distinguished from 
the others by the fronds of thinner texture, distantly arranged 
on the rhizome, and generally stalked, as well as by the sori and 
the ramenta on the rhizome smaller than in the others. The 
margin of the frond does not roll up very strongly, but I have 
seen a specimen collected by Ross in Manchuria, which at first 
glance appears as if it were a Thunbergianum forma contortum. 
I have examined the following specimens from Manchuria :— 
. Fenghwangcheng, shady rocks (Ross, Apr. 1876); Lao 
yeh Ling, near Moukden (James, 1886) ; Changpaishang (do.) ; 
Tang-ho-ko, Sungari R. to Hui Fa R. (do.). 
6. loriforme, (Wall.) Takeda. 
Syn. :—P. loriforme, Wall. List, n. 271 (1828); Mett. Polyp. 
p. 92 (1857); Hooker, Gard. Ferns, sub tab. 14, excl. syn. (1862). 
P. excavatum var. loriforme, C. Christ. Ind. Fil. p. 541 (1906). 
Luxurians. Frondes saepe subcaespitosae, ultra 30 cm. 
vulgo 20 cm. lg., 2 cm. It., coriaceae, anguste oblanceolatae, 
longe acuminatae, basin versus in stipitem breve sensim attenu- 
atae, costa prominenti, im sicco plerumque longitudinaliter 
tenuiter rugosae. Sori partem frondis apicalem occupant 
et saepe ultra medium occurrunt, distantes, inter costam et 
marginem medii vel leviter ad marginem dispositi; in sicco 
frondis margo revoluta, atque sori marginales videntur. Rhi- 
zoma crassum, paleis ovatis longissime acuminatis, ciliato- 
dentatis, nigro-clathratis, patentibus dense vestitum. 
Distr.—India, China, et Ins. Hawaii. 
This is a very luxuriant form, and is easily distinguished 
by the thick texture and the peculiar longitudinal wrinkles, 
which are more prominent than in the others. In dried speci- 
mens the margin of the frond rolls up as far as the line of the sori, 
so that the sori appear as if marginal. The sori are large and 
not very close together as in a, but sometimes some of them 
become confluent. 
In the Wallichian Herbarium there are specimens of P. 
loriforme (n. 271) from two localities. Those from Nepal (1823) 
are fine representatives of our plant, reaching over a foot in 
length, while those from Ladakh, collected by Moorcroft (1822) 
and named P. loriforme by Wallich himself, are, however, not 
the real P. loriforme. The Ladakh specimens are 5~-7.5 cm 
in length, and poets the sori nearer the midrib than the margin. 
