426 C2. osiiuxDA. 



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

 quite different in shape, reniform, stalked, G-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. OSMUNDACEtE. 



Caps, two-valved, op?hing across the apex, furnished with a short horizontal 

 ring. Vernation circinate. Gen. 62-G-3. 



Gen. 62. Osmunda, L, 



Sori quite distinct from the leafy part of the frond, foiTnino; a paniclemade up 

 of copious tli_yrsoid clusters. A genus of strihing ferns, very clearly marked by 

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

 temperate regions. Tab. VIII. fig. 62. 



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

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

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

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

 fertile 2)inn(e sliorter, made up of numerous close but distinct oblong sessile 

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



Hab. Kamschatka to Java and Ceylon. 



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

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

 in.br., the upper, central, or lower pinnse fertile ; barren pinnae l^niieoXaie, 4i-Q 

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

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

 cylindrical. — O. interrupta, Michx. 0. pilosa and monticola, Wall. 



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

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

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

 terminal panicle. 



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

 the young jdants densely clothed with feriuginous tomentum ; barren fr. 

 simply pinnate, naked when mature, the st. 12-18 in. 1., the fr. 2-3 ft. 1., 6-0 in. 

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

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

 smaller, the pinnce lanceolate, with close dense cylindrica.! pitinl. 



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

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

 land. — There is a form (var. froadosa, 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 ]., rather slender, 

 glossj', stramineous;/)'. T^-2 ft. 1., 6-10 in. br., bipinnate, the upper pinnae 

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

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

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

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

 coriaceous ; rachis and both sides naked. — Til. Ex. t. U. 



Hab. Hong-Kong, Dr. JIarland. 



