48. POLTPODIUM, § ETJPHBGOPTERIS. 311 



41. P. (Ph^.) Oldhami, Baker ; st. tufted, 12-18 in. L, clothed at the base 

 with long dense linear-subulate bright-brown scales, and throughout with small 

 adpressed scales ; fi: 1^2 ft. 1., 1 ft." or more br., deltoid ; lower pinnae much 

 the largest ; pinnl. of the lower side 2-3 in. 1., with distinct lanceolate deeply- 



. pinnatifid segm. ; largest ittt. Ubes j in. 1., J in. br. ; texture herbaceons ; racMs 

 densely forfuraceous like the stem ; under side rather glossy ; sori very dense 

 and numerous, close to the midrib. 



Hab. Formosa, Oldham. 



42. P. (Pheg.) alpestre. Hoppe ; s*. tufted, 4-6 in. 1., scaly below ; fir. 1-2 ft. I., 

 6-8 in. Lr., oblcing-lanceulate : pinnas lanceolate, 3-4 in. L, 1-1^ in. br. ; pinnl. 

 lanceolate, deeply pinnatifid, with toothed lobes ; texture herbaceons ; racMses 

 and both sides nearly naked ; reinlets pinnate in the lobes ; sori small, 1-4 to each 

 lobe. — Brit. F. t. 6. — ft P. flexUe, Moore ; habit more flaccid ; pinnl. oblong, 

 with fewer lobes and a broad uncut centre. — Hh. Sp. 4. p. 2.51. Pseudathyrium, 

 Newm. 



HaK Lapland and Scotland to the Pyrenees, Alps, and Central Bnssia ; Sitka, Or^on, 

 California. — Habit oi Athyrium filix-ftBmina, whidi see. 



43. P. (Ph^.) Bajeri, Hk. ; gt. firm, erect, polished, stramineous ; fir. 2 ft. or 

 more 1., 12-18 in. br. ; lower pinnce the largest, 6-10 in. 1., 2 in. or more br., 

 lanceolate ; pinnl. lanceolate, ^-§ in. br., cut down nearly to the rachis below 

 into close entire blunt lobes ; textttre herbaceous ; rachis and nnder surface 

 slightly pubescent ; veinlets of the lobes simple ; sori small, copious. — P. sessili- 

 foUnm, Mi. Sp. 4. p. 251. Aspidinm crudatum, JVilld., oldest name. 



Hab. Mauritiiis and Bourbon. 



***** Fronds ample, decompound. Sp. 44-55. 



44. P. (Pheg.) erinale, H. & A. ; st. tufted, stout, densely clothed with 

 squarrose fibrillose scales ; fi: 2-3 ft. L, 1 ft. or more br. ; pinncB ovate-lan- 

 ceolate or subdeltoid ; pinnl. lanceolate, blunt, 1^2 in. 1., wiUi rounded blunt 

 lobes 1^2 lin. br., the lower ones reaching down to the midrib ; texture 

 coriaceous ; racMses densely fibrillose ; both surfaces naked ; ultimate veinlets 

 forked ; sori (in our specimens) 1 to each lobe near the upper edge. — Bi. Sp. 4. 

 ^.266. 



Hab. Sandwich Isles. 



45. P. (Pheg.) asperulum, J. Sm. ; st. firm, terete, brownish, pubescent ; fir. 

 1^2 ft. 1., 1 ft. or more br. ; lower pinna 6-9 in. 1., 2-3 in. br. ; pinnl. lan- 

 ceolate, \ in. br., nnequal-sided, cnt down to the rachis below into oblong- 

 pinnatifid unequal-sided segm.; texture snbcoriaceous ; racAis and both sur&ces 

 villose ; veinlets immersed ; sori copious, one to each ult. lobe. — Hi. Sp. 4^ p. 257. 



Hab. Philippines, Cuming, 63. 



46. P. (Pheg.) afguilinum, Thonars; rhizome creeping; st. 1-2 ft. 1., stout, 

 erect, brown, pubescent, densely scaly at the base ; fr. 2-4 ft. L, 12-18 in. br. ; 

 pinn<B much imbricated, the lowest 6-9 in. L, 4-5 in. br. ; pinnl. lanceolate or 

 oblong-lanceolate, with linear-oblong, entire or sinuato-pinnatifid segm.; texture 

 coriaceous ; rachis and nnder side TiUose ; veins immersed ; sori minute, copious, 

 the margins recurved. — Hi. iSp. 4. p. 270. 



Hab. Tristan d'Aconba. — General habit of Pteris aguilina, and all the aspect of a 

 plant grown in a very exposed situation. 



47. P. (Ph^.) HillebrancU, Hk ; 82. 2 ft. or more 1., stout, clothed below 



