4. CYATHEA. 25 



scarcely 3 lines 1., from a broad base linear, acute, subfalcate ; veins sunk, incon- 

 spicuous ; sori near the middle of the pinnl., occupying the whole space between 

 the costule and the recurved margin ; invol. thin-membranaceous, white and 

 delicate, breaking into variously lobed and laciniated segments. 



Hab. Island of Ternate, De Vriese & Teijsmann, n. 1141. Judging from the solitary 

 but very perfect specimen in my possession, this is a very distinct species. 



45. C. Korthalsii, Mett. \fr. bipinnate, subcoriaceo-membranaceous, dull green ; 

 jyrim. pinnae 1 ft. 1. ; pinnl. sessile, 2-2^ in. 1., \ in. w., oblong, acuminate, sparingly 

 bullato-paleaceous beneath ; lobes narrow-oblong, obtuse, scarcely serrate, subfal- 

 cate ; sori more or less copious, chiefly in the lower part of the lobe close to the 

 costule ; invol. firm-membranaceous, breaking firstly at the summit, at length 

 falling away in fragments. Mett. in Miq. Ann. Mm. Bot. L. Bat. 1. p. 57. 



Hab. Sumatra, KortJials ; Java (ex Herb. Miquel.) . My named specimens from 

 Sumatra have old fructifications : those from Java (without name) have the involucres 

 exactly as described by Mettenius. Perhaps too near his Hemitelia (not Cyathea) crenulata. 



fft Species of Australia, N. Zealand^ and the Pacific Islands ; these latter 9 of 

 the N. Pacific, may be expected occasionally to extend to the Malay Archipelago and 

 Peninsula. Sp. 46-55. 



46. C. Lindsayana, Hk. ; main and second, rachises quite unarmed ; fr. mem- 

 branaceous, glabrous, except on the costce and costules which are subvillous and 

 have many scattered, small, bullate scales ; prim, pinnce 2 ft. ]., pinnate nearly to 

 the apex ; pinnl. 3-4 in. 1., oblong, acuminated, deeply pinnatifid ; lobes oblong, 

 subfalcate, serrated ; sori on the lower half of the lobes on the forking of the 

 veins ; invol. globose, firm-membranaceous, brown, opening with a circular, rather 

 small and jagged mouth. 



Hab. N. E. Australia, Mr. Lindsay, Walt. Hill. The first true Cyathea found in 

 Australia. My specimens are very perfect as far as the primary pinnae and fructifications 

 are concerned. It might pass for a membranaceous form of 0. Javanica; but the cup- 

 furmed involucre is much more permanent. 



47. C. medullaris, Sw. ; caud. lofty ; st. glaucous-black, and the rachises muri- 

 cated with short, spinous tubercles ; fr. ample, bi-tripinnate, coriaceous ; second, 

 pinnce 5-6 in. 1., f-1 in. br., deeply pinnatifid or again pinnate ; pinnl. or segm. 

 oblong or linear-oblong, obtuse, coarsely serrated in the sterile specimens, lobato- 

 pinnatifid in the fertile ones, with the margins re volute ; sori one to each lobule 

 of the pinnl. or lobe, intermediate between the subpaleaceous costule and the 

 margin ; invol. firm, membranaceous, brown, soon breaking open irregularly at the 

 apex with an irregular, often 2-lobed, margin (young/r. densely-paleaceous, with 

 soft, deciduous hairs). Hk. Sp. 1. p. 27, and Gard. Ferns, t. 25. 



Hab. N. Zealand. A Fern similar to this, but differing chiefly in the ultimate pinnules 

 or lobes bearing sori, is found in Norfolk and other of the Pacific Islands, which may 

 possibly prove distinct : this is the C. Mertensiana, Bong., and perhaps the C. extensa, 

 Sw. & Sc/ik. Fit. p. 127. t. 132. In our dried native specimens of C. medMans, the 

 stipes and main rachises are often pale-brown. See C. affinis, our n. 54. 



48. C. Cunningham*, Hk. f. ; caud. 12-15 ft. 1. ; st. and main rachises stra- 

 mineous and asperous ; fr. subcoriaceous, but flaccid (" soft, withering on the 

 trunk"), tripinnate ; prim, pinnce 1^-2 ft. 1. ; second, ones 3-5 in. 1., f-1 in. w., 

 oblong, acuminate, pinnatifid only at the apex ; lobes or ultimate pinnl. 4-6 in. 1. 

 linear, obtuse, pinnatifid some way down with great regularity ; lobules entire 

 veins forked ; sori one to each lobe, rather nearer the costule than the margin 

 invol. at first entire, globose, very thin, afterwards breaking down very irregularly 

 often leaving a large patent lobe or scale on the underside, as in Hemitelia ; costce 

 and costules villous and sparingly narrow-paleaceous. HTc.fil. in Ic. PL t. 985. 



Hab. N. Zealand. Perhaps too near C. medullaris. I possess it among Forster's 

 plants from N. Zealand, as well as from Colenso and Allan Cunningham. It is well 

 represented in the Icones plant. I. c. 



