4.^8 SOUTH AFRICAN HEPATIC.l'.. 



Genus 7. Fimbriaria. Special perianth present, consisting 

 of many membranous segments, permanently protruding from 

 the involucre. 



14. F. Bachmannii St. Pondoland. 



15. F. marginata Nees. Common. 

 10. F. muscicola St. 



17. F. Wilmsii St. 



Section 2. Compositae. Each involucre contains a grouj) 

 of archegonia. Capsule splitting into 4 to 8 teeth. 



Gouts 8. Lumularia. I'eduncle of receptacle not grooved. 

 Antheridia clusters sessile ; antheridia stalked. Gemmae-cups 

 crescent shaped. 



18. L. crnciata (Linn.) Dum. = Marchaiitia cniciata 



Linn. 

 Lnnuloria vuhjavis Mich. Exotic? usually in green- 

 houses or verandahs. Not seen fertile in South 

 Africa. 

 Genus 9. Dumortiera. I'eduncle 2-grooA'ed. air chambers 

 and pores usually absent ; antheridiophores nearly sessile. No 

 gemuKC-cups, or gemmse. 



19. D. hirsuta (Sw.j R. Bl. t^c N. =^Marchantia liir- 



siiio Sii'.; 

 D. irrigua R. BJ. & N.: /). hirsuta Tcir irriijua 

 Spruce. Frecitient in forest streams. 

 Genus 10. Marchantia. Peduncle 2-grooved ; air-chambers 

 and pores conspicuous ; antheridiophore pedunculate. Gemmge- 

 cups round. 



20. M. Berteroana L. & L. 



21. M. tabularis Nees. = pclyinorpha L. cr L. (not 



Linn. ). 



22. M. Wilmsii St. 



23. M. ])olymorpha Linn. 



Order IIL jUNGERMANNL\LES. 



Plant foliose in most cases, tlialloid in some ; when thalloid 

 the thallus is not ditterentiated mto layers of different tissue, 

 and is without ]iores. Tubercular rhizoids not present. Sexual 

 organs usually in groups, but not on special pedunculate recep- 

 tacles, and seldom immersed. Caiisule, which is usually on a 

 long seta, is destitute of lid, opens by 4 valves, and contains 

 spiral elaters as well as spores. Apical growth of stem or 

 thallus proceeds from a single apical cell. 



Sul)-()rder t. ANACRC XiYN.E. Archegonia on the upper 

 surface, not terminal ; involucre of sexual organs conseciuently 

 not representing leaves. 



b^amily 5. Aneurace.i-:. Plant thalloid. Sexual organs 

 from marginal or ventral branchlets. Elaters unispiral. Ela- 

 terophores remain as tufts on tlie apex of the capsule valves. 



