478 PTEKIS. 



linear-lanceolate, obtuse, straight or slightly falcate, central 1-1| in. 1., base 

 2 lin. br., lower much reduced ; rachis clothed with subulate scales ; texture 

 rigidly subcoriaceous ; upper surface naked, lower scaly on the midribs ; veinlets 

 bifid or simple, tumid at the tip, Jess divided and more spreading than infalcata. 

 Allosorus Zippellii, Miq. Ann. Mus, Lug. Bat. 4. p. 98. 



Hab. New Guinea, Zippelius. 



37*. P.pallida, Baker ; st. 3-4 in. 1., grey-brown, with minute, squarrose, linear 

 scales, like rachises ; basal scales minute, linear, brown, with a black keel ; jr. 

 oblong-lanceolate, bipinnate, 9-10 in. 1., 2-2^ in. br. ; pinnae lanceolate-deltoid, 

 short-stalked, lower distant, - in. br. ; lowest rather reduced ; pinnL 

 3-5-jugate, oblong, blunt or subacute, 2-3 lin. br., upper adnate, entire, lower 

 free, slightly bluntly lobed ; texture subcoriaceous ; surfaces pale grey-green, 

 lower thinly pilose ; veins immersed, obscure ; inv. narrow, soon hidden. 



Hab. Mexico, Consul Qlemie. 



37*. P. nitida, Baker ; st. tufted, slender, castaneous, 6-9 in. 1., with a few 

 fibrillose scales near the base ; fr. 4-6 in. 1., deltoid, 2-3-pinnate; upper pinnce 

 simple, lowest much largest, stalked, deltoid, produced on lower side ; 

 pinnl. few, distant, ligulate, patent, 1-2 in. 1., 1-2 lin. br., simple, or lowest 

 2-3-nate ; texture thin but firm ; surfaces grey-green, naked ; costce castaneous 

 in lower half, veinlets hidden ; inv. very narrow. Pteris nitida, /?. Br. Prod. 

 155 ? non Mett. 



Hab. Tropical Australia, Daintree, Schultz. Combines the narrow Platyloma involucre 

 with general habit like less-divided forms of P. angustifolia. 



37*. P. depilata, Baker ; st. 3-6 in. 1., naked, castaneous ; basal scales linear 

 pale ; fr. lanceolate, 4-8 in. 1., 1^-3 in. br., tripinnatifid or tripinnate ; rachises 

 castaneous, slightly pilose ; pinnae deltoid, nearly sessile, lower distant, several 

 subequal ; lower pinnl. sessile, lanceolate, blunt, deeply pinnatifid ; segm. 

 ligulate-oblong, adnate, 1-1^ lin. br. ; texture subcoriaceous ; surfaces dull- 

 green, with a few deciduous pale scale-like hairs ; inv. narrow, soon hidden by 

 the sorus. 



Hab. Ovalau Viti, Darnel. Habit of Cheilanthes subvillosa, and Notochlcena hirsuta. 



38*. P. leucomelas, Baker ; rhizome short ; scales dense, setaceous, keeled with 

 black ; st. 3-4 in. 1., black, naked, like the rachises, the latter deeply channelled in 

 front with a winged border ; fr. deltoid, 5-6 in. 1., bipinnatifid ; pinnae short- 

 stalked, ascending, lanceolate, lowesfl| largest, 1 in. br. ; pinnl. sessile, lower 

 5-G-jugate, blunt, upper oblong, entire, lower 3-4 lin. br., free, bluntly lobed ; 

 texture firm but thin ; surfaces pale-green, naked ; veins fine, distinct ; inv. 

 narrow, soon hidden. Mett. Kuhn, Fil. Afr. p. 83. 



Hab. Cape Colony, Breutel, and sent lately by Ecv. J. Bucbanan from the Transvaal 

 territory, gathered by Mr. Todd. 



XXXI. PTERIS. Page 153173. 



1*. P. longula, Mett. ; rhizome short-creeping ; st. 1-5 in. 1., castaneous, clis 

 tantly scaly ; fr. simple, ligulate, 1-4 in. 1., 2-4 in. br., or with 1-2 similar 

 divisions from the base, blunt, entire, cordate ; texture very thick, rigidly 

 coriaceous ; costce castaneous at base ; veinlets hidden, simple or forked ; surfaces 

 naked, pale-green ; edge narrowly revolute ; sorus continuous from base to tip. 

 Kuhn, Linn. 36. p. 88. P. triphylla, Baker, Ft. Bras.fasc. 49. p . 596. Pellrea 

 subsimplex, Fee, Fil. Bras. t. 4. Jig. 3. 



Hab. Rio Janeiro, Glaziou, 31GO. 



