CHARACTERS OF TRIBES AND GENERA. 369 
219.—HzrurNTBOsTACHYS, Kaulf. (1824). 
Fronds produced from a stout, short sarmentum, stipate 
1 to 14 feet long; sterile segments foliaceous, digitate, 
pedate. Veins forked, free. Fertile spike rising from the 
base of the leafy segment. Sporangia sub-globose, sessile, 
in pedicellate crested whorls, opening vertically by a slit 
on their exterior side. 
Type. Osmunda Zeylanica, Linn. 
Illust. Hook. and Bauer Gen. Fil., t. 47 B.; Moore Ind. 
Fil. p. 100 A.; J. Sm. Ferns, Brit. and For., fig. 156 ; 
Hook. Syn. Fil., t. 9, fig. 74. 
Sp. H. Zeylanica, Hook. (H. dulcis, Kaulf.). 
Ons.—First known as a native of Ceylon, and described 
by Linnzus under the name of Osmunda Zeylanica, but is | 
now found in India, Eastern Australia, and New Caledonia. 
290.—BornycHiUM, Sw. (1800). 
F'ronds erect, with dissimilar sterile and fertile segments. 
Sterile segments foliaceous, deltoid, bi-tripinnatifidly de- 
compound, rarely pinnate. Veins forked, free. Fertile 
e | segment rachiform, compound, paniculate. Sporangia sub- 
d globose, free, coriaceous, opening vertically in two equal 
.. valves. ! 
Type. Botrychium Lunaria, Sw. 
Illust. Hook. and Bauer Gen. Fil., t. 47 A. ; Moore Ind. 
Fil., p. 99 B. ; J. Sm. Ferns, Brit. and For., fig. 157 ; 
Hook. Syn. Fil., t. 9, fig. 75. : 
Sp. B. simplex, Hitch. (v v.); B. lunaria, Sw. (v v); 
B. ternatum, Sw. ; B. lunarioides, Sw. (v v.) ; B. — 
cum, Willd. (v v.). 
.. Oxs.—This is a very widely diffused genus, B. lunaria 
being found in both the northern and southern temperate ` 
AB 
