ITCOPODE^E. CXXvii. 



* * Spore-cases two-lobed, the lobes one-celled. 



179. TMESIPTEBIS, Bernhardi, Schrad. Journ. 1800, 



ii. 131, t. 2, f. 5. 



TMESEOPTEBIS, Kunze; LTCOPODII sp., And. ; PSILOII sp., B. Brown. 



Spore-cases (antheridia) two-lobed, the lobes divaricate sub- 

 acute, two-valved, opening by a vertical cleft j coriaceous, sessile 

 in a fork of the leaf. Spores oblong, with a single stria. 



Stems leafy angulate. Leaves vertical, sessile, decurrent, cori- 

 aceous, the fertile ones didymous or dichotomous, stipitate. 



Ex. : T. tannensis, Bernh. 



* * * Spore-cases three-celled. 



180. PSILOTUM, Swartz, Schrad. Journ. 1800, ii. 8, 109. 



BEBITHARDIA, WilUenow ; HoFFMAiririA, Willdenow; IPPHIA, Noronha ; 

 GAESAULTIA, Commerson MS.; BUCHOSIA, Commerson MS.; TEISTECA, 

 PaUsot de Beauvais ; LTCOPODII sp., Auct. 



Spore-cases (antheridia) three-celled, three-valved, coriaceous, 

 scattered; sessile in the axils of the minute bract-like leaves. 

 Spores oval, with a single stria. 



Stems compressed or angular, dichotomously forked. Leaves 

 none, or reduced to minute bractiform subulate scales, in the 

 axils of which are produced the scattered fructifications. 



Ex. :'P. triquetrum, Sw>. \ P. complanatum, Sw. 



(b) Fructifications comprising both antheridia and oophoridia, 



181. SELAGINELLA, Palutot de'Beauvais, Prod. AetJieog. 



101 (extens.) ; Spring, Mon. Lycopod. ii. 52. 



STACHYGYN ANDKIUM:, Palisot de Beauvais ; DIPLOSTACHTUM, Palisot de 

 Beaucais ; GrMffOGYNUM:, Palisot de Beauvais; MIEMAU, Adaneon ; 

 ACOPODICM, Necker ; LTCOPODII sp., Auct. 



Spore-cases of two kinds : (1) antheridia, one-celled, two- 

 valved, opening at the apex, erect, oblong or globose, containing 

 numerous small spores ; (2) oophoridia, one-celled, two to four 



