276 TAKEDA—ASIATIC POLYPODIUMS. 
A careful examination of the type specimens of the above- 
mentioned three recognised species has led the writer to arrange 
them as under :— 
"ae 
P. subimmersum, Baker, in Kew Bull. (1895), p. 55. 
Syn. :—P. xiphiopteris, Bak. l.c. (1906), p. 13. 
Yunnan : Mengtsz (Hancock, n. 92, Henry, n. 11,826, 11,8264). 
or" Forma angustifrons, mh. 
Frondes latitudine 8 mm. non excedentes, saepe angustiores. 
Yunnan: Yungchang (Henry, n. 13,425). 
wae Forma mengtzeanum, (Bak.) mzhv. 
Syn. :— P. mengizeanum, Bak. |.c. (1906), p. 14. 
> Yunnan: Mengtsz (Henry, n. 11,827B). 
The name subimmersum is rather inappropriate, since the 
sori are superficial. 
‘o65l 6. P. sublineare, Baker, in sched. sp. nov. 
P. oligolepido, Baker affine, sed frondibus subfasciculatis nec 
distantibus, sessilibus nec stipitatis, ramentis longe acuminatis, 
clathratis, ciliato-dentatis, nec integris, fusco-brunneis differt. 
Rhizoma crassum, ramentis oblongo-ovatis, longissime acu- 
minatis, clathratis, ciliato-dentatis obtectum. Frondes sub- 
fasciculatae, 12-42 cm. vulgo circa 30 cm. lg., 2-5 cm. vulgo 3 cm. 
It., lanceolatae, apice longe acuminatae, basin versus longe 
decurrentes, subcoriaceae, nervis inconspicuis, utrimque glabrae, 
pagina superiore minutissime copioseque nigropunctata, margine 
plus minus repandae, costa prominenti. Sori plerumque inter 
costam et marginem medii, rotundi, globosi, 2-3 mm. diam., 
superficiales, juveniles paleis peltatis tecti. 
CutinaA. Yunnan: Tengchwan Lin Mt. forest, gooo ft. (Henry, 
n. 90624) ; Mengtsz, E. mts., 6000 ft. (Henry, n. 11,827, 11,828) ; 
f Yungchang, 6000 ft. (Henry, n. 13,603). 
Henry’s no. 9g062A has been determined and reported by 
Christ as P. simplex.* However, the locality given by that 
botanist is not identical with that of our plant, so that the 
writer presumes that there may have been some error in con- 
nexion with his specimen. 
7. P. oligolepidum, Baker. 
Rhizoma crassum, 2-3 mm. diam. fusco-nigrum, paleis 
deltoideis, anguste acuminatis, integris, dorso nigro-brunneis et 
reticulatis, margine late hyalinis vestitum. Frondes distantes, 
_ * Bull. Herb, Boiss. vi, p. 875 (1895). 
