22 4. CYATIIEA. 



beneath ; the costce and costules paleaceo-hirsute on both sides ; pinnae 6-8 in. 1., 

 sessile, oblong acuminate, pinnated, or very deeply pinnatifid nearly to the 

 costa ; pinnl. or lobes 7-8 lines 1., obtuse, subfalcate, serrato -dentate ; veins 

 forked ; sori at the fork ; invol. very thin, membranaceous, fugacious, leaving a 

 shallow ragged cup, most permanent at the inferior side. 



Hab. Cameroon Mountains, alt. 3-4,000 ft., Q. Mann. Habit, of C. Welwitscliii, but 

 not tubercled on the rachis, quite glabrous on the fronds, except on the costae and 

 costules ; and the lower pinnae are not dwarfed. 



30. C. angolensis, Welw. ; " caud. 12-15 ft. 1., 8 in. in diam. ; fr. 6-8 ft. 1." 

 (probably including the St., which in the specimens is 1J ft. or more, castaneous, 

 slightly muricato-tuberculate and fusco-paleaceous at the base, the rest smooth), 

 bipinnate, glabrous, subcoriaceo-membranaceous, paler and subglaucous beneath ; 

 prim, pinnce \\ ft. and more 1., oblong-acuminate ; pinnl. 3 in. 1., sessile, oblong, 

 pinnatifid nearly to the base, sometimes ferrugineo-tomentose in the axils, deeply 

 and nearly to the rachis pinnatifid (subpinnate at the very base) ; lobes oblong, 

 subfalcate, obtuse, the margin a little thickened, subserrate ; sori at the forking 

 of the veins, chiefly on the lower half of the lobe and- near the costule ; invol. cup- 

 shaped, short, but broken down and sublobed at the margin. Welw. Phys.- 

 Geogr. in Ann. Cons. Ultram. 1858, p. 358. 



Hab. Benguilla, distr. Huilla, Trop. W. Afr., alt. 3,500-5,550 ft. ; very rare, Welwitsck, 

 n. 186 and 83. The sori are rather old, and the involucres do not probably represent their 

 earlier form. Doubtfully distinct from C. 



31. C. KirJcii, Hk. ; main rachis unarmed, and, as well as the second, ones, deci- 

 duously pubescent and paleaceo-crinite with subulate, often spreading, black 

 scales, pale at the margin ; fr. firm-membranaceous, dark-green, a little paler 

 beneath, glabrous, hirsutulous on the costae on both sides ; prim, pinnce 22 in. 1., 

 8 in. w., oblong-acuminate ; pinnl. J-f in. w., oblong, rather suddenly acuminate, 

 deeply pinnatifid (almost pinnate) ; lobes or ult. pinnl. approximate, oblong, obtuse, 

 slightly crenate ; veins forked ; sori near the costule, and in my solitary specimen 

 near the base of the lobe ; invol. membranaceous, breaking down into irregular lobes, 

 but with the largest lobe generally at the inferior base of the sorus, hence some- 

 what hemitelioid. 



Hab. Johanna Island, alt. 2,000 ft., Dr. KirTc. Unwilling as I am to found a new 

 species on a mere fragment, though perfect in itself, I am, on the other hand, very 

 unwilling to leave unnoticed a tree-Fern from so little known a country as Johanna 

 Island. 



32. C. sechellarum, Mett. ; st. tuberculato-asperous, and, as well as the main 

 rachis, ebeneous-purple ; fr. subcoriaceous, glabrous, dark-green above, paler 

 beneath ; prim, pinnce 1^-2 ft. L, 8-9 in. w. ; pinnl. 6-8 lines w., oblong, acu- 

 minate, deeply pinnatifid ; lobes linear-oblong, acute, falcate, serrated ; veins 

 distinct, forked ; sori mostly in the lower half of the lobes, and near the costule ; 

 invol. membranaceous, pateriform, persistent. Mett. in Miq. Ann. Mm. Bat. 

 L. Bat. \.p. 68. 



Hab. Seychelles, PervilU, n. 365, lis, and 76a (ex Herb. Mus. Par. in Hb. Nostr. ; 

 since received from Swinburne Ward, Esq. (No. 2). My own specimens are from the same 

 source as those described by Metteniue, who observes that the species has the habit of 

 C. spinulosa, Wall, (from India), but the frond is coriaceous, the rachis muricate, not 

 Bpinulose, the invol. entire, persistent, not soon breaking down into fragments. 



33. C. excelsa, Sw. ; unarmed ; fr. bipinnate, coriaceo-membranaceous ; prim. 

 pinnce 2 ft. 1., 6-8 in. w. ; pinnl. 3-4 in, 1., | in. w., sessile, deeply pinnatifid, sub- 

 pinnate at the base ; lobes oblong, obliquely subacute, serrated, scaleless ; veins 

 once forked near the base ; sori in the fork near the costa ; invol. membranaceous, 

 very glossy, fragile, bursting irregularly into lobes, rarely sub-2-valved. Hk. 

 Sp. 1. p. 24. t. 12. B. 



Hab. Bourbon and Mauritius. 



