166 



Sori marginal, capsules in minute spikes pro- 

 jecting from margin of frond. Lygodium. 



Capsules irregularly spread over under surface 



of frond. Acrostichum. 



Capsules large, on under surface of lower seg- 

 ments only. ToDEA. 



Capsules few (2-10 in each sorus) medial, frond 



rigid, opaque. Gleichenia. 



Capsules few, concrete, intramarginal. Mvh attta. 



IL FRUCTIFICATION .^PIOATR. 



Barren frond ovate, vernation straight. 

 Barren frond linear, vernation oircinate. 



OPHlOaLOSSUM. 

 SOHIZ.^A. 



Anemia. 

 Acrostichum. 



Gleichenia. 



POLYPODIOIDKS, Sm. 

 DICIIOTOMA, Willd 



in. FRUCTIFICATION PANICULATE. 



Fronds bi-pinnate, apex fertile. Osmunda. 



Fronds pinnate, barren and fertile distinct from 



each other. Erect. 

 Fronds pinnate, fertile bi-pinnate. Climbers. 



List of Species. 



A. GLBICHENIACEiE. 

 The only Natal genus. 



Gleichenia, Sm. 



Segments small, ovate. Capsules 8-5 in each sorus. 



On rocks in midland districts. 

 Segments oblong, a pair of pinnte at each fork. 



Umpumulo and Botha's Kill. 

 Segments olilong, racliis woolly. umbracilifeija, Mourt^. 



Midlands at edge of woods. " UmbreUa Fern." 



B. HYMENOPHYLLE^. 

 Hymenophyllum, Hook. 



A small moss-like plant with membranous toothed 



fronds. Involucres cut to base into two 



toothed lobes. 

 On damp rocks midlands, A variety with 



unitateral fronds is occasionally met with. 

 A small moss-like plant, fronds membranous, 



entire. Involucre cut half way down. 



Near Maritzlnirg (Sanderson) not seen by us. 



Trichomanes, Sm. 

 Frond pinnatifid ; rhizome creeping. 



Midlands on wet rocks, our plant is the 

 variety " quercifolium." 

 Frond tripinnatifid, rhizome creeping, fronds small, pyxidiferum, Liim. 

 On rocks and trees midlands and upper 

 districts. 



Tuxbridgense, Sm. 



gracit,e, Bory. 



PUSILLUM, Sw. 



