560 .MR.C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 
The sori in size and position resemble those of P, angustatum. It is vain to found a 
new species on such material, and it is not improbable that it really is P. angustatum 
depauperated. 
LP. lanceolatum, Linn., is said by Beddome (Ferns Brit. Ind. Suppl. p. 22) to be 
* general" in India; but I have no example from North India. | 
tt Main veins distinct to the edge. or nearly to the edge. 
47. P. RHYNCOPHYLLUM, Hook. Sp. Fil. v. 65, 2nd Cent. Ferns, t. 54. Rhizome wiry, 
far-creeping, with lanceolate-subulate spreading yellow-brown scales; stipes long ; 
fronds somewhat dimorphic, firm in texture; sori principally confined to the cau- 
date prolongation of the fertile frond.—Hk. & Baker, Syn. Fil 359. Pleopeltis 
rhyncophylla, Bedd. Ferns Brit. Ind. t. 9. 
Khasia, alt. 4000-5500 feet, common.—Distrib. Burma. 
48. P. GRIFFITHIANUM, Hook. Sp. Fil. v. 62, 2nd Cent. Ferns, t. 51. Rhizome not very 
thick, far-creeping, with lanceolate-subulate brown spreading scales; stipes long; 
fronds subuniform, firm in texture; sori large, in a single row close to the main 
rhachis, often extending more than halfway to the base of the frond.—Hk. & Baker, 
Ben. Fil. 359. Pleopeltis Griffithiana, Bedd. Ferns Brit. Ind. t. 158. 
Sikkim and Bhotan;. alt. 6000-9000 feet; common.  Khasia, alt. 4000-5000 feet; 
frequent. ` i 
49. P. ovatuM, Wall. Cat. 276. Rhizome not very thick, far-creeping, with lanceolate- 
linear brown spreading scales; stipes long; fronds subuniform, herbaceous, broadly 
lanceolate ; sori large, in single irregular rows between the main veins, usually few. 
| —Hk. & Grev. Ic. Fil. t. 41; Hook. Sp. Fil. v. 64; Hk. & Baker, -— Fil. 359. 
Pleopeltis ovata, Bedd. Ferns Brit. Ind, t. 157. 
Sikkim, Sir J. D. Hooker; Chundaghiri, Wail. Bhotan, Griffith. Khasia, alt, 4000 
feet; in several places, but must be called rare, (Moosmai Cave; Bishop’s Falls, 
Shillong. )—Distrib. China. | 
P. ensatum, Thunb., seems very near. 
50. P. MEMBRANACEUM, Don, Prodr. Fl. Nep. 2. Rhizome stout, didi creeping, with 
ovate-lanceolate scales ; fronds large, lanceolate, thin, membranous, green, gradually 
narrowed at the base to a short stipe; primary parallel veins connected by secondary 
veins in several series parallel to the main rhachis ; sori very many, rarely coalescent, 
on the anastomosing veinlets included in the areola between the secondary veins.— 
Mett. Farngatt. Polypod.118; Hook. Sp. Fil. v. 70 (excl. syn. P. heterocarpum); Hk. & 
Baker, Syn. Fil. 360, partly. P. grandifolium, Wall. Cat. 282. (P1. LXXXII. fig. 3.) 
Himalaya, alt. 3000-8000 feet; from Gurwhal to Bhotan, very common. Khasia, 
alt. 2000-5000 feet, very common. Chota ame Poeni sit. Men "e C. a. 
o —Distrib. South India, Ove: | 
