48. POLYPODIUM, EUPHEGOPTERIS. 311 



41. P. (Pheg.) Oldhami, Baker ; st. tufted, 12-18 in. 1., clothed at the base 

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

 adpressed scales ; fr. 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 scgni. ; largest ult. lobes j in. 1., J in. br. ; texture herbaceous ; rachis 

 densely furfuraceous like the stem ; under side rather glossy ; sort very dense 

 and numerous, close to the midrib. 



Hab. Formosa, Oldham. 



42. P. (Pheg.) alpestre, Hoppe ; st. tufted, 4-6 in. 1., scaly below ; fr. 1-2 ft. 1., 

 6-8 in. br., oblong-lanceolate ; pinnae lanceolate, 3-4 in. 1., 1-1J in. br. ; pinnl. 

 lanceolate, deeply pinnatifid, with toothed lobes ; texture herbaceous ; rachises 

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

 lobe. Brit. F. t. 6. /3, P. flexile, Moore ; habit more flaccid ; pinnl. oblqng, 

 with fewer lobes and a broad uncut centre. Hk. Sp. 4. p. 251. Pseudathyrium, 

 Newm. 



Hab. Lapland and Scotland to the Pyrenees, Alps, and Central Eussia ; Sitka, Oregon, 

 California. Habit of A thyrium filix-fosmina, which see. 



43. P. (Pheg.) Bojeri, Hk. ; st. firm, erect, polished, stramineous ; fr. 2 ft. or 

 more 1., 12-18 in. br. ; lower pinnae 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 ; texture herbaceous ; rachis and under surface 

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

 folium, Hk. Sp. 4. p. 251. Aspidium cruciatum, HVilld., oldest name. 



Hab. Mauritius and Bourbon. 



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



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

 squarrose fibrillose scales ; fr. 2-3 ft. 1., 1 ft. or more br. ; pinnae ovate-lan- 

 ceolate or subdeltoid ; pinnl. lanceolate, blunt, l-2 in. 1., with rounded blunt 

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

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

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

 p. 266. 



Hab. Sandwich Isles. 



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

 l|-2 ft. 1., 1 ft. or more br. ; lower pinnce 6-9 in. 1., 2-3 in. br. ; pinnl. lan- 

 ceolate, in. br., unequal-sided, cut down to the rachis below into oblong- 

 pinnatifid unequal-sided segm.; texture subcoriaceous ; rachis and both surfaces 

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



Hab. Philippines, Cuming, 63. 



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

 erect, brown, pubescent, densely scaly at the base ; Jr. 2-4 ft. 1., 12-18 in. br. ; 

 pinnce much imbricated, the lowest 6-9 in. 1., 4-5 in. br. ; pinnl. lanceolate or 

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

 coriaceous ; rachis and under side villose ; veins immersed ; sori minute, copious, 

 the margins recurved. Hk. Sp. 4. p. 270. 



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

 plant grown in a very exposed situation. 



47. P. (Pheg.) Hillebrandi, Hk ; st. 2 ft. or more 1., stout, clothed below 



