50. KOTHOCIIL^XA, CIKCINALIS. 373 



entire lobes on each side, the lowest pair much the largest, deeply pinnatifid on 

 the lower side ; texture very thick ; under surface densely matted with yellowish- 

 brown tomentum ; veinlets forked ; sort copious, marginal, Polypodium, Hk. 

 Sp. 4. p. 229. Ic. t. 991. 



Hab. South Brazil, Gardner, 2390. A very distinct species, with the habit of 



Doryopteris. 



18. N. Buchanani, Baker ; st. tufted, slender, villose, bright chesnut-brown, 

 3-4 in. 1. ; fr. 1^-2 in. 1., 1-1| in. br., subdeltoid, with 2-3 pairs of distinct/wwee 

 below the deeply-pinnatifid apex, the lowest much the largest, cut down to tht 

 rachis at the base into oblong blunt repand pinnl., that on the lower side j-| 

 in. 1. ; texture herbaceous; rachis and both sides densely clothed with spreading 

 whitish or ferruginous hairs ; sori copious, brownish, quite marginal. 



Hab. Natal, Buchanan and McKen, 32. This is very like the last in outline, but is 

 more deeply divided, not so thick in texture, and though very hairy, yet not matted. 



19. N. tenera, Gill. ; st. densely tufted, 4-6 in. 1., chesnut-brown, naked, glossy 

 fr. 3-6 in. 1., l|-2 in. br., ovate, tripinnate ; pinnae distant, the lower ones deltoid 

 thepinnl. long-stalked, with blunt oblong segm. \-\ lin. br. ; texture subcoriaceous 

 rachises rigid ; both surfaces naked ; sori brown. Hk. Sp. 5. p. 112. Bot. Mag. 

 t. 3055. 



Hab. Chili and Andes of Bolivia. Very doubtfully distinct from N. nivea, from which 

 it differs only by being without white powder beneath. 



Cincinalis, Dcsv. Fronds coated beneath with white or yellow powder. 

 Sp. 20-27. 



20. N. (Cine.) trichomanoides, R. Br. ; rhizome thick, bulbiferous, the scales 

 black, fibrillose ; st. tufted, 2-4 in. 1., firm, erect, chesnut-brown, slightly scaly ; 

 fr. 6-12 in. 1., f-1^ in. br., simply pinnate ; pinnae sessile, ovate-oblong, blunt, 

 pinnatifid, with blunt lobes ; texture subcoriaceous ; upper surface pale-green, 

 nearly naked, lower clothed with white powder and fine ferruginous woolly hairs, 

 the edge inflexed. Hk. Sp. 5. p. 109. 



Hab. Jamaica and Cuba. Differs from all the following by being tomentose as well as 

 farinose, and sometimes the powder is quite bidden beneath the tomentum. 



21. N. (Cine.) affinis, Hk. ; st. tufted, 2-3 in. 1., wiry, glossy, naked, nearly 

 black ; fr. 4-5 in. 1., |-| in. br., bipinnatifid ; pinnae short-stalked, deltoid-oblong, 

 in. 1., J in. br., deeply pinnatifid, with close entire lobes, the lower ones distant 

 and dwindling down gradually ; texture subcoriaceous ; upper surface and ebe- 

 neous rachis naked, lower densely matted with sulphur-coloured meal ; sori 

 marginal, brownish. Hk. Sp. 5. p. 109. 



Hab. Mexico and Guatemala. Our description is taken from a set of specimens 

 gathered by Messrs. Salvin and Godman, and does not entirely agree with that of Mette- 

 nius. In habit our plant agrees with the preceding, but is perfectly without tomentum. 

 Specimens from Cuba (C. Wright, 1075-6) are very similar, but are rather more slender, 

 and the farina is pure-white. 



22. N. (Cine.) sulphurea, J. Sm. ; rhizome creeping, the scales dense, rigid, 

 linear, nearly black ; st. tufted, 4-6 in. 1., ebeneous, wiry, naked ; fr. 2-3 in. each 

 way, deltoid ; upper pinnce simple, central ones lanceolate, cut down to the rachis 

 at the base into oblong lobes ; lowest pair with the lowest pinnl. much prolonged, 

 TT in. or more 1., pinnatifid or pinnate ; texture subcoriaceous ; upper surface 

 naked, pale-green, lower coated with white or yellow powder, the ribs ebeneous ; 

 sori black. Pteris, Cav. Cheil. pulveracea, Hk. Sp. 2. p. 78. N. Candida, Hk. 

 Sp. 5. p. 111. 



