70 POLYPODIUM, § PHYMATODES. 



irregular areoles with free included veinlets, sori mostly com- 

 pital rather large arranged in a single regular series nearer 

 the costa than to the mai'gin or in a waved line partially 

 scattered or very copious and irregularly dispersed over the 

 whole under-surface of the frond. — Metten. Polyp, p. 86. t. 1. 

 f. 41-43. — Var. a, normalis ; frond 1-1^ foot long ^ an inch 

 to 1 inch wide. Polypod. normale, Don, Prodr. Nep. p. 1. 

 Phymatodes, Pr. Drynaria, J. Sm. — Var. /S, latijrons ; fronds 

 1-1^ foot long 1-2 inches wide, sori regularly uniserial. — 

 Var. 7, sparsisora ; fronds 2-.3 feet long ^-1 inch wide, sori 

 irregularly scattered and copious. P. longifrons. Wall. Cat. 

 n. 274. Hook, and Grev. Ic. Fil. t. 65. Drynaria, Fee. 



Hab. Var. a and 7. Nepal, and throughout northern Bengal, Khasya, and As- 

 sam, alt. 4000-6000 feet, Wallich, Griffith, Hooker fil. and Thomson.— y ax. ^. 

 Malacca, Griffith. Moulraeine, Parish, n. 65, 176 (alt. 4000 feet), Thos. Lobb. 

 China, Hance, Alexander. Formosa, Swiiihoe. — I cannot doubt but Mettenius is 

 correct in uniting the P. lonffifrons. Wall., with the P. normale of Don, notwith- 

 standing the different arrangement of the sori ; my numerous intermediate speci- 

 mens quite justify such a union, and my var. y exhibits intermediate states be- 

 tween those two. 



350. P. (Phymatodes) membrayiaceum, Don ; caudex creep- 

 ing stout the younger portion paleaceous with blackish-green 

 ovate acuminate scales, stipites distant or subaggregated 1-5 

 inches long if longer winged above with the decurrent base 

 of the frond, fronds 6 inches to 2-3 feet long by less than an 

 inch to 6 inches broad ! thin-membranaceous and translucent 

 or tirm-meuibranaceous and opaque lanceolate or oblongo- 

 lanceolate or oblanceolate acuminate the base long attenuated 

 and much and gradually decurrent upon the stipes glabrous, 

 the margin entire or more or less deeply sinuato-lobate or 

 pinnatifid and even fimbriated throughout the whole length 

 with long narrow unequal segments, venation very distinct, 

 costules horizontal or nearly so slender usually remote con- 

 nected by transverse veins which form the primary areoles 

 and these are filled up with irregular network of which the 

 areoles are very unequal and include copious free veinlets, 

 sori compital rather small usually in two series between the 

 costules more or less numerous according to the width of 

 the frond rarely reduced to one sorus near the costa where a 

 single series parallel with the costa isf ormed, not unfrequently 

 there are 3-4-5 series (not very regular) between the costa 

 in one instance a single series only appears between the cos- 

 tules and those of a verv large size and abnormal in form 



