2 
TAKEDA—ASIATIC POLYPODIUMS. 269 
vulgo 15 cm. lg., 5-11 mm. vulgo 8 mm. lt., coriaceae, rigidae, 
supra atropunctatae, apice longé acuminatae, basin versus in 
stipitem brevissimum vel breve sensim attenuatae, margine in 
sicco saepius revolutae. Sori rotundi vel ovales, adproximati, 
et adulti saepe subconfluentes, supremam frondis partem (saepius 
apice excepto) occupantes, medii inter costam et marginem. 
Rhizoma paleis nigris, clathratis, e basi cordato-ovata longissime 
acuminatis, margine ciliato-dentatis vestitum. 
Distr.—Japonia media et australis, Formosa, Corea, China, 
Tibet, Ins. Hawaii, et Java. 
This is the form which was first described in 1784 by Thunberg 
from Japan as Polypodium lineare and later by Kaulfuss from 
Owahu under the name of Pleopeltis elongata.* Kaulfuss, 
probably unaware of the identification of Thunberg’s plant 
with his species, and in order to distinguish it from his Pleopeltis 
linearis * (=P. lanceolatum, L.=Pl. lanceolata, Kaulf.), proposed, 
in 1827, to call it Pl. Thunbergiana.t The same form again 
received a fourth name, P. atropunctatum, Gaud., which was given 
to an Hawaian specimen, and in recent years it has been dis- 
tinguished by Makino as P. lineare a, typicum. 
The frond is thick and persistent, and the colour is a deep 
green on the upper surface, and paler on the under side. In the 
dry season the fronds curl up, and unroll again in damp weather. 
This form is very common in Japan, and is found growing on 
trunks or rocks, and sometimes also on old thatched roofs. 
Outside Japan, 5 ee: and the Sandwich Islands, I have 
seen the following specim 
COREA. Quelpaert Tanaet, n. 3656). 
CuInA. Kwantung: Lo Fou Shan (ex hb. bot. Hongk., n. 
140); Fukien: Amoy (Hance, n. 1410. Swinhoe, 1870) ; 
Chekiang : in ins. parva Toon doon ding san lacus Taihu (Forbes, 
n. 1874) ; Kiangsi: Kiukiang (Forbes, n. 541 ; Shearer, 1873) ; 
Szechwan: Mt. Omei (Faber, n. 1069); Yunnan: Mao-kon- 
tchang (Delavay, 1883) ; Szemao (Henry, n. 10,062), Mengtsz 
(Henry, 2: 10,0874). ag eee 
TIBET. Yatung, 27° 51’ N., 88° 35’ E. (H. E. Hobson, 1897). 
Java. No precise locality u. H. Walker, 1876). 
Forma caudato-attenuatum, Takeda. 
Frondes apice longissime caudato-attenuatae saepe elongatae, 
20-30 cm. lg., ceterum uti in typo. 
apan. Yokosuka (Savatier, n. 1541, part.); Oshima 
(C. Wright, 1853-56, ex hb. U.S. Pacif. Expl. Exped.). 
- en Enum. Fil. p. 246 (1824). 
+ Kaulfus (Das Wesen der Farrnkrauter, G 115 [1827]) regards P/. nuda, Hook. 
(1823), asa pabette of Pl. elongata, Kf. (18 Besides this case, he disregards 
older names and prefers using new names of ‘his own. 
