426 62. OSMUND A. 



from a subcuneate disk, the barren divisions narrow-ligulate, the fertile ones 

 quite different in shape, reniform, stalked, C-8 in br., the outer edge rounded, 

 entire. Hk. Sp. 5. p. 285. 



Hab. Philippines and Malay Peninsula and Isles. The only species with a distinct 

 uniformly fertile segment, which in a specimen from Mr. Prout is nearly a foot broad. 



SUB-ORD. III. OSMUNDACE.E. 



Caps, tvvo-valved, opening across the apex, furnished with a short horizontal 

 ring. Vernation circinate. GEN. 62-63. 



GEN. 62. OSMUNDA, L. 



Son quite distinct from the leafy part of the frond, forming a panicle made up 

 of copious thyrsoid clusters. A genus of striking ferns, very clearly marked by 

 habit, containing few species, hardly at all tropical, and only one known in South 

 temperate regions. TAB. VIII. fig. 62. 



1. O. javanica, Blume ; st. tufted, 6-12 in. 1., firm, erect, naked ; fr. 1-3 ft. 1., 

 8-12in.br., simply pinnate, the lower or central pinnse fertile; barren pinnce 

 4-8 in. 1., -f in. br., cuneate at the base, and often slightly stalked, the edge 

 entire or sharply toothed ; texture coriaceous ; rachis and both sides naked ; 

 fertile pinnce shorter, made up of numerous close but distinct oblong sessile 

 clusters. Kunze, t. 3. O. Vachellii, Hk. Ic. 1. 15. 0. Presliana, J. Sm. 



Hab. Kamschatka to Java and Ceylon. 



2. 0. Claytoniana, L. ; st. tufted, 1 ft. or more 1., clothed with loose woolly 

 ferruginous tomentum when young, naked when mature ; fr. 1-2 ft. 1., 8-12 

 in. br., the upper, central, or lower pinnae fertile ; barren pinnce lanceolate, 4-6 

 in. 1., 1 in. or more br., cut down nearly to the rachis into close oblong entire 

 lobes ; texture herbaceous ; fertile pinnce similar but shorter ; pinnl. dense, 

 cylindrical. 0. interrupta, Miclix. O. pilosa and monticola, Wall. 



Hab. Canada, Newfoundland, and throughout the United States, Himalayas up to 

 10,000 ft. The station of Rio Janeiro, which rests on Wallich's authority, is perhaps 

 given by some confusion with 0. cinnamomea. 0. glaucescens, Link, is the form with a 

 terminal panicle. 



3. O. cinnamomea, L. ; st. densely tufted, the barren and fertile ones distinct, 

 the young plants densely clothed with ferruginous tomentum ; barren fr. 

 simply pinnate, naked when mature, the st. 12-18 in. 1., the/r. 2-3 ft. 1., 6-9 in. 

 br. ; pinnce close, ligulate-lanceolate, 3-4 in. 1., f-1 in br., cut down nearly to the 

 rachis into close entire blunt oblong lobes ; teatfwesubcoriaceous ; fertile fr. much 

 smaller, the pinnce lanceolate, with close dense cylindrical pinnl. 



Hab. Canada and Newfoundland to Mexico, West Indies, Guatemala, New Granada, 

 and Organ Mountains (0. imbricaia, Kunze, Fil. 2. t. 112), Japan, Mantchuria, Amur- 

 land. There is a form (var. frondosa, A. Gray) with some of the fronds sterile below 

 and sparingly fertile above. 



4. O. bipinnata, Hk. (not Linn.) ; st. tufted, 1 ft. or more 1., rather slender, 

 glossy, stramineous ; fr. 1^-2 ft. L, 6-10 in. br., bipinnate, the upper pinnce 

 barren, the uppermost linear-oblong, simple, below these several pinnate, 3-4 

 in. L, 1 in. br., with a winged rachis and numerous entire oblong imbricated 

 pinnl. on each side, and lowest of all, 3-4 opposite pairs of fertile pinnae with 

 several cylindrical pinnl. on each side, J-f in. 1., 1^-2 lin. apart; texture sub- 

 coriaceous ; rachis and both sides naked. Fil. Ex. t. 9. 



Hab. Hong-Kong, Dr. Harland. 



