26 4. CYATIIEA. 



49. C. dealbata, Sw. ; unarmed or slightly asperous ; rachises and costce clothed 

 with pale, ferruginous, deciduous tomentum ; fr. subcoriaceous, bi-tripinnate ; 

 pinna? oblong, acuminate, pure white beneath from the presence of a deciduous 

 powder, deeply pinnatifid or pinnate at the base ; lobes oblong, acute, falcate, 

 serrated ; sori copious, sometimes confined to the lower half of the lobes ; invol. 

 rather small, globose, membranaceous, fragile, soon breaking down in an irregular 

 manner, the base often remaining an orbicular membrane. Hk. Sp. 1. p. 27. 

 Rich. Fl. N. Zeal. p. 77. t. 10. /? subglaucous, but not white, beneath. 



Hab. N. Zealand, where it seems generally to retain its pure white beneath. Penang, 

 Sir W, Norris^ sterile. Lord Howe's Island (along with var. (3), Milne & McGilivray. 

 This latter island may be reckoned as in the N. Zealand group. 



50. C. aneitense, Hk. ; unarmed ; main and second, rachises ebeneous, purple- 

 black, quite smooth ; fr. coriaceo-membranaceous ; prim, pinnae 1-1^ in. 1., 4-5 

 in. w., sessile, or nearly so, oblong, shortly-acuminate, pinnatifid nearly to the 

 rachis ; lobes rather distant, oblong, acute, subserrated ; veins forked ; sori copious 

 intermediate between the costa and the margin ; invol. thin-membranaceous, per- 

 sistent, soon breaking down, and generally opening at the back so as to form a large, 

 lax, almost transparent, 2-lobed and ragged cup, often again irregularly lacerated ; 

 ult. rachises and costce villous, with narrow scales. 



Hab. Isle of Aneiteum, N. Hebrides, Milne, McGilivray. Ternate, Herb. Hort. Qalc. 

 This is quite new, and not known, apparently, to Brackenridge. 



51. C. nigricans, Mett. ; "fr. coriaceous, opaque, green above, paler beneath, 

 bipinnatisecto-pinnatipartite ; rachis unarmed, purplish, glossy ; prim, pinnae 

 subovato-lanceolate ; second, ones subsessile, elongato-oblong, acuminate, caudate 

 at the apex and sharply serrated, subglabrous above, beneath squamulose at the 

 costse and costules, with imbricated, white, bullate, ciliated scales ; lobes sub- 

 distinct, contiguous by the dilated base, elongato-oblong, subfalcate, attenuated 

 at the apex, obtuse or nearly so, serrated ; veins forked, rarely bifurcate ; sori 

 3-6 on each side the costule, the lowest ones distant from the costule, the rest near 

 to it ; recept. hemispherical ; paraphyses few, filiform, curved, generally torulose, 

 formed of cells tumid in the middle, the terminal cell subglobose, or more or less 

 dilated." Mett. in Miq. Ann. Mus. Bot. L. Bat. 1. p. 36. 



Hab. " Ualan, of the Caroline Islands, Mertens." Unknown to me. 



52. C. leucolepis, Mett. ; unarmed, and hairy only on the costce above ;fr. ample, 

 firm-membranaceous, bipinnate, lurid-green, paler beneath ; prim, pinnae 1^ in. ]. ; 

 pinnl. sessile or subpetiolate, paleaceous, with whitish bullate scales on the costse 

 and costules beneath, 3-4 in. L, from a broad base 1 in. w. (narrowest on the 

 inferior side), oblong, suddenly acuminate, pinnatifid f of the way to the 

 costule ; lobes oblong, obtuse, subfalcate, subentire ; veins all forked at the middle, 

 distant ; sori copious, rather distant, and forming a line on each side between the 

 costule and the margin ; invol. rather firm-membranaceous, of the same lurid- 

 green as the frond, long - persistent, then breaking away at the summit, and 

 eventually forming irregular lobes. Mett. in Miq. Ann. Mus. Bot. L. Bat. 1, 1. c., 

 p. 66. 



Hab. Aneitum, Milne. We now regard the plants from Fiji and the Solomon Islands, 

 placed here in the first edition, as distinct. 



53; C. Milnei, Hk. ; caud. 30 ft. 1., 9 in. diam. ; fr. subcoriaceous, dark 

 blackish-green above, paler beneath ; rachises palish-brown, asperous, woolly, 

 as well as the under side of the pinnce, near their base, with copious deciduous 

 tomentum ; pinnce H-2 ft. 1., 6-10 in. w. ; pinnl. elongato-oblong, deeply to the 

 costules pinnatifid ; lobes oblong, falcate, subobtuse, crenato- serrate, the margins 

 a little recurved ; sori copious, moderately large, mostly situated at the base of 

 the lobes, near the costule ; invol. membranaceous, rather firm, long-persistent 



