74 
CATALOGUE OP PERNS. 
1. la. priamata, Fresl. Poly podium pruinatum, Sw. Alsophila 
pruinata, Kaulf. Polypodium griseum, S 'chic. Fil. t. 25. 
— Tropical America. 
## Sporangia globose ? sessile , opening vertically ; ring 
transverse or sub-obligue. 
Tribe YIII. GLEICHEETjE, J. Sm. 
Sporangia globose or pyriform ; ring transverse. Sori punc- 
tiform, naked. 
111. 6LEICHENIA, R. Br. 
(Mertensia, Willd.) 
Vernation uniserial and sarmentose. Fronds 1-6 feet high, 
once or more times dichotomously branched ; pinnae linear, pin- 
natifid, ultimate divisions small, plane, or the margin revolute, 
forming a cucullate cyst. Veins simply or pinnately forked; 
venules free, the exterior one bearing 2-4 sporangia on its apex ; 
receptacle punctiform, superficial or immersed. 
1. G. micropliyXla 5 R. Br. — New South Wales and Tasmania. 
2. G. dicarpa, F. Br. ; Hook. Sp. Fil. v. 1. t. 1 C; Kunze , 
Fil. t. 70. — Tasmania. 
3. G. speluncse, R. Br.; Hook. Sp. Fil. v. 1. t. 1 A . — New 
South Wales and Tasmania. 
4. G. flabellata, R. Br.; Labill. Sert. Nov. Baled, t. 12. — 
Australia and Tasmania. 
5. G. dichofcoma, Hook. Mertensia dichotoma, Willd. ; Schk. 
Fil. t. 148 ; Lang, et Fisch. Ic. Fil. t. 29. Polypodium 
dichotomum, Thunb. FI. Jap. t. 37. Gleichenia Her- 
manni, R. Br. — General throughout the Tropical and 
Subtropical regions of the Southern Hemisphere. 
