CHARACTERS OF TRIBES AND GENERA. 
H 
definite froide, and the other scandent and indefinite, the 
at Gyst. 
latter forming the genus Stenoloma of Fée. 
* Fronds definite, not scandent. 
Sp. O. tenuifolia (Sw.) (v v.). 
Oss.—This is a widely spread species, being found in 
India, Malayan, and Polynesian Islands, also the Sandwich 
Islands, the latter being the nearest approach to the con. 
tinent of America, where it has not yet been found. ; 
O. bifida (Kaulf.) ; O. microphylla (Sw.); O. chinensis 
(Linn.) ; O. retusa (Cav.) ; O. clavata (Sw.) 
** Fronds scandent (Stenoloma, Fée.). 
O. divaricata (Schlecht.) (D. Schlechtendahlii, Hook.) ; O. 
aculeata (Sw.) (v v.) ; O. famarioides (Sw.). 
146.—DzxxsrzpTA, Bernh. (1800). 
Sitibolium, Desv. (1827) ; J. Sm. (1841) ; Patania, Presl. 
(1836) ; Dicksonia, Hook. Sp. Fil. 
S Vernation uniserial and sarmentose. Fronds bi-tripinnate, 
8 to 6 feet high. Veins simple or pinnately forked, the ` 
exterior veinule or more soriferous, Receptacles terminal. 
~ Sori globose, reflexed. Special. and accessory indusia united, — 
. and forming a reflexed, bilabiate, or subentire calyciform ` 
Type. Dennstedtia punctiloba, Bernh. 
Illust. Hook. and Bauer., Gen. Fil., t. 61; Moore Ind. 
Eh, 5.79 A; J. Ben Ferns, Brit. ee en fig. 
125 ; Hook. geg, Fil, t. 2, fig. 18, 
Ups, This genus was originally founded by Bernhardi 
SS on Trichomanes flaccida of Forster, but was afterwards with 
its allies better known as Dicksonia, with which they agree 
in the technical character of the sori, but their sarmentose 
