5 o HEPATICAE 



1 1. Stomata simple. 



1. Sporogone opening by a circular slit. 

 x Receptacle slightly lobed at the edge. 



o Perianth finally deeply cleft t multipartite. 



(4) 34. Fimbriaria 



00 Perianth none. 



(1) 35. Grimaldia 



x x Receptacle cleft to the middle. Perianth none. 



(1) 36. Reboulia 



2. Sporogone longitudinally split into valves. Frond areolatc on the 



upper side. 



x Bulbilliferous receptacles crescent-shaped. Antheridia in clusters 

 sessile on upper side of frond. Frond hi furcate, small. 



(1) 37. Lunularia 

 One cosmopolitan species (L. cruciata) frequent in 



conservatories and sheltered places. 



x x Bulbilliferous receptacles cup-shaped, with dentate margin. 

 Antheridia in clusters on a stipitate stellate capitulum. 



(3) 38. Marchantia 



Three S. A. species. M. polymorpha ubiquitous in 

 damp places. (Plate 5 ; Fig. 41.) 



Order 111. ANTHOCEROTALES. 



The only genus. (Fig. 38.) 



(2) 39. Anth6ceros 



Plate 6. 



A. Sphagnum capense Hornsch. 1. Plant. 2. Leaf. 3. Margin of leaf. 

 4. Transverse section of leaf. 5. Sphagnum sauarrosum Hornsch. the perichaetium 

 with pseudopodium and ripe capsule. 



H. Andreaea subulata Harv. 1. Plant. 2. Leaf. 3. Andreaea petrophila Khrh. 

 Dehiscing capsule, the calyptra removed. 



C. Archidium capense Hornsch. 1. Plant. 2. Same, enlarged. 3. Apex of leaf. 

 4. Basis of leaf. 5. Capsule in long, section. 



D. Leucoloma Zeyheri C. Muell. 1. Plant. 2. Leaf. 3. Apex of leal". 4. Basis 

 of leaf. 



¥.. Fissidens fasciculatus Hornsch. 1. Plant. 2. Leaf. 3. Apex of leaf. 4. Peri- 

 stome. 



F. Syrrhopodon pomiformis (Hook.) Hampe. i. Plant. 2. Leaf. 3. Cells from 

 middle portion of leaf. 



G. Aitomuw tetragonum (Harv.) Broth. I. Plant. 2. Plant, enlarged. \. Peal. 

 4. One half of apex of leaf. 5. Isolated cells from central portion ot leaf, showing the 

 annular papillae. 



H. Glyphomitr'tum [Brachysteleum) crispatum Hook. & Grew 1. Plant. 2. Leaf. 

 3. Apex of leaf. 4. Capsule with calyptra. 5. Peristome. 



Figs. A 5, H 13, F 1-3, G 1-5, from Engler ..n; Prantl, the others from nature. 



