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 ; 

 prim.pinnce I 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. Mus. Bot. L. Bat. 1. p. 57. 



Hab. Sumatra, Korthah ; Java (ex Herb. Miguel.) . 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, 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. 1., 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, firrn-membranaceous, brown, opening with a circular, rather 

 small and jagged mouth. 



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

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

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

 formed 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 revolute ; son 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//-, densely-paleaceous, 

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



Hab. N. Zealand ; and the same, or a very closely allied form, has lately been sent 

 from the colony of Victoria by our indefatigable correspondent Baron von Mueller. 



48. C. Cunninghami, 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, pinna? 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. Hk. fil. in Ic. PL t. 985. 



Hab. N. Zealand. Perhaps too near C. inedullaris. 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. 1. C. 



