48 . ON GENERA AND SPECIES. 
** Spore cases without a jointed ring. 
(a). Sori dorsal. 
Orper.—MARATTIACE A, 
Tribe 1.—MaRaATTINEZ. 
§ 1. Angiopteridew (Genus 1, Angiopteris, Hoffm.) 
§ 2. Marattiee (Gen. 3, Marattia, Sm., Gymnotheca, 
Presl, Eupodium, J. Sm.) 
Tribe 2, —KAULFUSSINE X. 
(Gen. 1, Kaulfussia, Bl., K. esculifolia). ’ 
Tribe 3.—DANXINEX. 
(Gen. 1, Danea, Sm.) 
(b). Fructification marginal, on rachiform fronds 
or branches (venation straight). 
OrDER.—OPHIOGLOSSACEÆ. 
(Gen. 3. Botrychium, Sw., Helminthostachys, Klfs., 
Ophioglossum, Lin.) E 
Lycopodales.—Acrogenous plants with axillary radical — 
or one-four-or many-celled spore cases. a 
* Spore cases one-three celled, in the axils of the stem- 5 
leaves or bracts, S 
Orver.—LYCOPODIACE A, 
§ 1. Phylloglosses (Gen. 1 ; Phylloglossum, Kze). : 
$ 2. Lycopodiee (Gen. 4, Tmesipteris, Bernh., Psilotum, 
Sw., Selaginella, P. B.) 
** Spore-cases (conceptacles) one-four-or many-celledy 
radical or petiolar, 
Mining 
§ 1. Isoetew (Gen. 1, Isoetes, Lin.) 
$ 2. Salvinieae (Gen. 2, Salvinia, SEN Azolla, Tam) 
