﻿26 1. CYATHEA. 



small, acuminate scales. Pinnae oblong-lanceolate, + 4S c.M. long, 12 — 15 

 c.M. broad. Pinnulae lanceolate, 1 ^2 — 2 c.M. broad, narrowed from the middle 

 to the apex, cut down to the rachis into linear, entire or rarely crenulated 

 divisions ± ^'/^ m.M. broad, with a distinct space between them. Texture 

 firm, subrigid; both surfaces green; rachises and under surface densely covered 

 with small, ovate-lanceolate, cuspidate scales on the midribs; veins 9 — 10 on 

 each side, distinct, forked from the base. Sori close to the midribs; indusium 

 fragile, membranaceous, soon breaking down to the base. 

 Sumatra. 



* (32) C arachnoidea, Jifc., Hk. Bk., Syn. Fil., 24. 



Fronds 3-pinnate; rachises all dark-coloured, opaque, clothed with rusty 

 tomentum and muricate with short, black, sharp spines Pinnulae 10 — 12 

 c.M. long, 1 — 2 c.M. broad, oblong, pinnate, pinnatifid only near the narrow, 

 acuminate point. Teiliary divisions scarcely 7^2 m.M. long, linear from a 

 broad base, acute, subfalcate. Texture coriaceous; under surface cobwebby; 

 veins immersed, inconspicuous. Sori near the middle of the pinnulae, occupying 

 the whole space between the midribs of the ultimate divisions and the recurved 

 margin; indusium thin-membranaceous, whitish, breaking down into variously 

 lobed and laciniated segments. The javan plant (Leg. Scheffer) has the ultimate 

 segments crenate, + 1 c.M. long. 



Ternafe, Java; Queensland. 



* (33) C celebica, r>. a. v. n. ' 



Fronds large, 3-pinnate; main rachis prickly and furfuraceous like the 

 secondary ones; the prickles blackish, strong, sharp; the tomentum ferrugineous. 

 Pinnae 50—60 c.M. long, + 20 c.M. broad, on stalks ± 3 c.M. long. Pin- 

 nulae sessile, the lower ones stalked, + 2 c.M. broad, the apex short-acumi- 

 nate, crenate; lowest pimmlae distant, ± 3 c.M. apart. Tertiary divisions 

 linear, the highest sessile, subfalcate, crenate, blunt, the lowest ± longest, 

 + 2 m.M. broad, spreading, subpctiolate, lobed towards the base, with the 

 lowest segments free, the lowest anterior segments often larger than the other 

 ones. Texture coriaceous but not firm; tertiary rachises tomentose above ; sur- 

 faces naked or the under surface sparingly and minutely scaly on the veins; 

 veins distinct, + 8 on each side, mostly forked. Sori filling up the space 

 Itetween the costae and the edge, occupying all the veins except the simple 

 highest and the 2 — 3 X f^^'^ed lowest ones; indusium thin, gradually evanishing. 



Celebes, (Teysmann, No. 13681). 



