CHARACTERS OF TRIBES AND GENERA. - 6$ 
both the Old and New World, which, as in many other 
instances, has led to their being considered as distinct 
species. 
211.—Osmunpa, Linn. (1737). 
Vernation fasciculate, erect, acaulose, sub-arboroid, pro- 
ducing outgrowing aerial, mossy roots, forming a spongy 
mass. Fronds pinnate or bi-pinnate, 3 to 10 feet high, 
pinne articulated with the rachis. Veins forked; venules 
` free. Fertile fronds wholly, or the upper or middle portion, 
contracted, forming simple or compound sporangiferous 
panicles. 
Type. Osmunda regalis, Linn. ; 
‘Ilust. Hook. and Bauer Gen. Fil., t. 46 A.; Moore Ind, 
Fil., p. 94 B.; J. Sm. Ferns, Brit. and For., fig. 148; 
Hook. Syn. Fil., t. 8, fig. 62. 
* Fertile fronds wholly contracted (Osmundastrum, Pr.). 
Sp. O. cinnamomea, Linn. (v v.) ; O. lancea, Thunb. 
— ** Lateral pinne of fertile frond contracted ( Plenasium, Pr.) 
O. Javanica, Blume.; O. Claytoniana, Linn. (v v.); O. 
bipinnata, Hook. Fil. Exot., t. 15. ! 
*** Terminal pinne of fertile frond contracted (Euosmunda). —— 
` O. regalis, Linn. (v v.); O. spectabilis, Willd. (vv.); O. ` 
gracilis, Link. (v v.). , "ui 
. Omns.—0. cinnamomea and O. regalis have a wide geo- — 
graphical range, the first being found throughout tropical 
and temperate America, Eastern China, and Japan, the — 
Second being found in most countries conducive to Fern ` 
