512 POLYPODICJM. 



mineons ; fr. suberect, oblong-lanceolate, 1-2 ft. I., 8-12 in.br., simply pinnate ; 

 pinnce 10-20-jugate, ligulate -acuminate, faintly inciso-crenate, ^-f in. br., many 

 free distant, lowest not reduced ; texture membranous ; surfaces bright-green, 

 naked ; areolce and sori uniserial, the latter not close, nearer the midrib than 

 the edge. HTc. Sp. 6. p. 32. 



Hab. Himalayas, temperate region. 



2.55*. P. (Gonioph.) sessilifolium, Licbm. ; st. and rachises naked stramineous ; 

 fr. 2-3 ft. 1., l-l ft. br., oblong-lanceolate, simply pinnate ; pinnce 20-30-jugate, 

 ligulate, acuminate, -| in. br., faintly inciso-crenate, many lower not at all 

 adnate, lowest not reduced ; texture membranous ; ribs below finely pubescent ; 

 areolce and sori 1- rarely 2-serial, the latter not close, in a line near the midrib. 

 Gonioph. serratum, Fee, Mem. 8. p. 95. 



Hab. Mexico, Bourgeaw, 2891, and a deeply-crenate form cut nearly or quite down to 

 the rachis at the base, Bourgeau, 3071, bis. General habit of subauriculatum. 



262*. P. (Gonioph.) platylepis, Mett. ; rhizome %in. thick, firm, wide -creeping ; 

 scales large, lanceolate, pale-brown ; st. 3-4 in., erect, scaly ; fr. lanceolate, 

 6-8 in. 1., 1^-2 in. br., simply pinnate; pinnce close, patent, 20-25-jugate, 

 2 lin. br., blunt, inciso-crenate, alldilated at base, lowest not reduced ; texture 

 rather thick ; lower surface coated with minute lanceolate lepidote scales with a 

 dark-brown centre and pale border ; areolce and sori uniserial. Mett. Kuhn, 

 Linn. 36. p. 137. 



Hab. Guatemala and New Granada. 



263*. P. (Gonioph.) thyssanolepis, A. Br. ; rhizome slender, ^ in., firm, wide- 

 creeping ; scales dense, minute, lanceolate, pale-brown ; st. stiff, erect, scaly, 

 3-12 in. ; fr. lanceolate, 3-9 in. 1., 2-4 in. br., simply pinnate ; pinnce ascending, 

 ligulate, blunt, entire, distant, -| in. br., all except lowest dilated at base, lowest 

 not reduced ; texture thick, subcoriaceous ; upper surface dull-green, nearly 

 naked, lower densely clothed with ciliated lepidote minute scales with a brown 

 nucleus and broad scariose border ; areolce and sori uniserial. P. rhagadio- 

 lepis, Fee, Gen. p. 237. 



Hab. Mexico to Peru. 



262*. P. vittosum, Karst. ; rhizome woody, in. thick ; scales dense, large, pale- 

 brown, lanceolate-acuminate ; st. 3-5 in., stiff, erect, scaly ; fr. lanceolate, 

 |-1 ft. 1., 2-2 in. br., gradually reduced at the base ; pinnce 20-30-jugate, blunt, 

 ligulate, entire, 2-3 lin. br., all dilated at the base ; texture subcoriaceous, very 

 thick ; upper side dull-green, nearly naked, lower densely clothed with imbri- 

 cated pale-brown lanceolate scales ; areolce and much-raised sori uniserial. 

 Fl. Columb. t. 144. 



Hab. Andes of New Granada. 



280. The Himalayan differs from the typical Japanese Lingua by its broader 

 oblong-lanceolate fronds, and is separated by Mett. and Kuhn, Linn. 36. p. 140, 

 as a species under the name of P. Heteractis, and by J. Smith as Niphobolus 

 latus. 



280*. P. (Niph.) pannosum, Mett. ; rhizome wide-creeping, as thick as a 

 quill, with small brown adpressed linear scales; st. 1-6 in., matted with 

 brown tomentum ; fr. lanceolate, 2-6 in. 1., 1-lj in. br., narrowed to both 

 ends ; texture subcoriaceous ; under surface matted with close pale-brown 

 cottony tomentum ; main veins erecto-patent, in. apart ; sori crowded, 5-G in 

 a row between the main veins, ceasing a space from the edge. Kuhn, Linn. 36. 

 p. 141. 



