TAKEDA—ASIATIC PoLyPopIuMs. 299 
The nearest affinity of this species is perhaps P. malacodon: 
Baker * united the former with the latter, and has drawn up a 
description which would fit both the species. 
Our plant is characterised by the comparatively short stipe, 
a large graceful frond with long falcate pinnae, the margin of 
which is denticulate with low and not cuspidate teeth. The 
ramenta on the rhizome are much the same as in P. malacodon, 
being long-subulate, pale brown, fimbriate on the margin, 
and shiny black in the centre, but are generally longer. The 
spore of this species is almost smooth, as in P. malacodon. 
P. cyrtolobum is not rare in Northern India, but seems to be 
not common in China. I have seen only one specimen from that 
country, which is very small, trifid with short basal lobes, 
resembling P. hastatum on the whole. + 
P. cyrtolobum has been correctly described and figured by 
Clarke.t ’ 
32. P. oxylobum, Wall. 
There is little doubt about the identity of P. oxylobum, Wall. 
with P. trifidum, Don. As there is another P. trifidum published 
earlier than Don’s species, this name, though older than P. 
oxylobum, cannot be used. 
This species has been confused particularly with P. hastatum 
of Thunberg in many pteridological works, in spite of the fact 
that these two species are absolutely distinct. 
P. oxylobum varies from ternate to pinnatifid, or may even 
be simple. In any case this species can be distinguished from 
P. hastatum by the absolutely entire margin of the frond, and by 
the larger size of the ramenta on the rhizome. When this 
species produces a lobed frond, it is always pinnatifid, whereas 
P. hastatum never produces pinnatifid fronds, but invariably 
pedate. However, both the species may become trifid in certain 
cases, which probably has caused the confusion. The spore of 
this species is echinate as in P. hastatum. : 
The following specimens have been examined from China 
and Formosa :— 
Cuina. Kwangtun;: Canton (Ford, Dec. 1878); Yunnan: 
Szemao, W. mts., 6000 ft. (Henry n. 10,0808) ; Mengtsz, rocky 
precipice in deep, dark glen (Hancock, n. II); Szemao Mts., 
6500 ft., on dry rocks (Henry, n. 13,074); Upper Yangtze 
(Francis) ; W. China (Wilson, n. 5331 §). 
Formosa. South Cape (Henry, n. 1241). 
i : Yunnan (Delavay, n. 3997). 
; z= eae Ne cae je Man ges Soc. sec. met 563, tab. lxxxiii (1880). 
§ The specimen has been recorded as P. podobasis, Chr.; see Bull Acad. Intern. 
Geogr. Bot. xvi, p. 106 (1906). The same number has agai been described as 
P. trifidum var. catadromum, Christ, in Lecomte, Not. Syst. i, p. 33 (1909)! 
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