160 
CHRIST. 
Var. Foxworthyi n. var. 
Pinna terniinali lineari vel oblonga acuminata grosse dentata longe 
decurrente interdum raclicante, pinnis duabus lateralibus rudimentariis 
minutis, 0.5 cm. ant ultra diametro,- ellipticis aut rotundatis, pinna fertili 
terminali 1 inear i-lanceolata duobus lobulis lateralibus ovatis suffulta. 
Planta vix 20 cm. alta. 
Luzon, Province of Rizal, Bosoboso (68 Foxworthy) January, 1906. 
Small, very narrow and very simple in comparison with the type, but closely 
related by the shoots developed along the upper parts of the leaves. 
Var. inconstans (Copel. in Govt. Lab. Publ. 28 (1905) 43 pro specie). 
In view of the fact that two varieties show a progressive intergradation 
between the type and the species described by Copeland, I have not hesitated to 
consider the latter as a variety of Leptoohilus heteroclitus, a form still more 
reduced than the preceding, characterized by its very small size, the apices of the 
leaves often linear, the shoots very irregular. Var. Foxworthyi is almost exactly 
intermediate between the type and the variety inconstans. 
Luzon, Province of Bataan, Lamao River (3128 Merrill ) April, 1904; (251 
Copeland) January, 1904; (1124 Whitford) March, 1905; Province of 'Rizal, 
Mabacal (Loher) March, 1906. 
This variety seems to be rather widely distributed in the Philippines; I have 
specimens from Christmas Island (Straits Settlements) leg. Ridley that closely 
approach it. 
Var. Linnaeanus (Fee Acrost. 87 pro specie). 
I believe that this form can be reduced, with a sufficient degree of surety, as 
a variety of Leptoohilus heteroclitus, as a derived form of that species, in spite 
of its uniformly elongated and very narrow leaves. Its texture, its nerves, 
although strongly • simplified, its proliferous leaves and the strong resemblance 
of its offshoots to those of the normal form support this contention. We have 
then a series almost complete from the type, that seems to be always tripliyllous 
in the Philippines, to the form with absolutely linear and undivided leaves. 
Luzon, Province of Rizal, Mariap River, near Montalban (Loher) 1892. 
24. Leptoohilus diversifolius Blume, Enum. 103 et Fil. Jav. Tab. 12. 
Mindanao, San Ramon (1543 Copeland) November, 1904, alt. 100 m. 
Discovered by Blume in Java and generally confounded with L. heteroclitus, 
from which it is sufficiently distinct. Conf. Raciborski Pterid. Buitenz. 48. 
ATHYRIUM Roth. 
25. Athyrium anisopteron Christ, Ann. Acad. Mans. (1907). 
Luzon, Province of Benguet, Mount Tonglon (Loher) 1894, alt. 2,250 m. ; 
Pauai (1967 Copeland) November, 1905, alt. 2,150 m. 
This is the plant that I have previously considered as Aspidium Fauriei var. 
datum Christ, 5 and which Copeland, MSS., referred to Nephrodium. Makino 6 
treats it with reason under Athyrium. After an examination of abundant material 
I have divided this species into several, the representative in the Philippines 
being A. anisopteron, a species of a Chinese group already known from Yunnan, 
leg. Henry et P. Ducloux. 
5 Bull. Herb. Boiss. 6 (1898) 193. 
0 Bot. Mag. Tokyo 17: 160. 
