FERNS OF THE MALAY-ASIATIC REGION. 
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rowly lanceolate, acuminate, subsessile, coarsely dentate-pinnatifid, more 
or less entire toward the apex; veinlets pinnate; sori dorsal on the veins 
or in the lower axils; indnsium breaking into irregular lobes. 
Ceylon, with G. sinuata. 
4. Cyathea dulitensis Baker. 
Trunk short, 30 cm high; stipe 45 cm long, brown, clothed at the base 
with large linear-subulate, membranaceous, brown scales, naked upward ; 
frond 30 cm long, 12 to 15 cm broad, thick-coriaceous, green and glabrous 
on both sides, bipinnate ; pinnte 24 mm wide, lowest reduced and deflexed, 
the lower ones stalked ; pinnules 4 mm wide ; linear-oblong, subentire, 
margin deflexed, the lowest free but adnate ; veinlets forked, immersed ; 
sori medial, indusia campanulate, glabrous, persistent, breaking irregularly. 
Borneo (Sarawak, Mount Dulit, alt. 1,200 m.) 
5. Cyathea alternans (Wall.) Presl. 
Trunk 3 to 4 m high; frond bipinnate at base; pinnae up to 45 cm 
long, 15 cm broad, sometimes much smaller, stalked; pinnules entire 
or serrate, acuminate ; rachis smooth and glabrous, tawny-brown ; veinlets 
once or twice forked; sori more or less biseriate; indusium thin and 
fragile. 
Penang, Borneo. 
6. Cyathea podophylla (Hooker) Copel. ( Alsophila podophylla Hooker in 
Journ. Bot. 9 (1857) 334). 
Frond typically simply pinnate, but sometimes bipinnate with almost 
entire lobes, or even tripinnate; rachises hairy above, dark purplish; sori 
minute, globose, in one to several rows parallel to the costa, those nearest 
the costa medial on their veinlets, but those nearest the apex almost cos- 
tular ; indusium none. 
This is a variable fern, and not always distinct from C. glabra. 
Hongkong, Chusan, ( ?) Liu Kiu. 
Alsophila dubia Beddome in Journ. Bot. 26 (1888) 1, is intermediate 
between C. glabra and C. podophylla, but said to be nearer the latter. 
It is described as follows : Bachises purple-brown, slightly furfuraceous 
above, glabrous beneath; frond subcoriaceo-membranaceous ; pinnae 40 to 
50 cm long, pinnate, apex pinnatifid; pinnules 10 cm long, 15 mm broad, 
on petioles 2 to 3 mm long, very acuminate, more or less truncate at 
base, pinnatifid only about one-sixth of the way to the costa, lobes rather 
truncate; cost* scaly beneath or at length glabrous, furfuraceous above; 
veinlets simple; sori large, usually on the lowest 1 or 2 veinlets, some- 
times on 3 or 4 veinlets, then costular and not forming an inverted V 
as in C. glabra, 
Perak, alt. 1,200 m, Borneo, Java. 
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