PTERIDOrHYTA HALCONENSES. 127 
Lindsaya gracilis Bl. 
p 
Terrestrial in humid forests at 200 m. alt. (No. 5928). 
Throughout the Philippines, common. 
■Malava. 
E 
Lindsaya pulchella (,T. Sm.) Mett. 
Epiphytic on Ahophila at 850 m. alt. (No. 5927). 
Throiigliout the Philippines on tree-fern trunks. 
Malaya to Samoa. 
Lindsaya cultrata (\\ilhl.) Sw., var. minor Hook. Sp. Fil. 1: 204. 
* On bouhlers along the Alag River at 375 ni. alt. (No. 5930). 
India to Madagascar and Australia. 
This little plant, collected in Luzon by Cuming, and in Negros by Whitford, 
seems quite fixed in aspect, but the variety varia, common in Benguet, completely 
bridges the gap between it and the typical fuim. 
^ Lindsaya davallioides Bl. 
y ' Terrestrial in ridge forests at 700 m. alt. (Nos. 5925, 5920), the specimens 
j all hi pinnate, also in ridge forests at 1,800 m. alt. (No. 5929) the specimens all 
simply pinnate; but Merritt collected bipinnate plants on Mount Halcon at 1,700 
^ m. alt. in Jime, 1906 (No. 4403 Merritt). 
Other Philippine collections are from Luzon :uid Pahiwun. 
Malaya. 
Lindsaya orbiculata (Lam.) Mett. ? 
Terrestrial in forests at 200 and 700 m. alt. (Nos. COlO, 5924). 
This plant is Lindsaya javensis BL, a large form of which is L. fiahellata var. 
gigantea Hook. I am doubtful of the propri^ety of regarding this as conspecific 
with the small fern already kno^Mi from the Philippines as L. orbiculata. 
m WW 
y 
i 
1 
ATHYRIUM Roth. 
Athyrium toppingianum Copel. {Asplcnium, Copel. in Perk. Frag. Fl. Philip. 
(1905) 184). . 
J On damp ledges along streams at 375 m. alt. (No. 5921). 
Common in similar situations throughout the Philippines. No. 1218c Wichura, 
distributed as a variety of Asplenium Lasiopteris Mett., is probably this species. 
DIPLA2IUM >S\v. 
Diplazium japonicum (Thunb.) Bedd. 
On damp ledges along streams at 375 m. alt. (No. 5920), a small plant, differing 
from D. Oldhami Christ in being less glabrous. 
This plant is unquestionably congeneric with Athyrium foppingianttm which 
is an unmistakable Athyrium. Diplazium in this part of the World has had a 
phiral origin in Athyrium, and the naturalness of our classification would be 
promoted by ceasing to treat it as a distinct genus. 
D. japonicum is supposed to occur from Japan to Mindanao and India. 
Diplazium braciiysoroides Copel. n. sp. (PI. 1, Fig. A.) 
Stipite 20-40 cm. alto, 4 mm. erasso, basin versus nigro, supra sordide 
brunnco, rhachique paleis angustis horizontalibus 4-8 mm. longis sursum 
minoribus flexuosis sparsis vestitis; fronde 50-60 cm. alta, ca. 30 em. lata, 
acuminata vix bipinnata apice pinnatifida; pinnis maximis medialibuSj 
