1887.] 



HEPATICAE KNYSNANAE. 



15 



rounder leaves which are more toothed and no mention is 

 made of the presence of underleaves or the striking light 

 yellowish green color. 



In the axils of the stem leaves there are often deve- 

 loped processes of 3 — 4 single cells (pedicels of abortive 

 antheridia?) which sometimes develope into branchlets. 



Measurements. Stems Vs i Q - to 1 in.; .25 mm. to .3 

 mm diam.; leaves 1.3 mm long X .7 mm broad. 1. mm X 

 .9 mm. 1. mm X .7 mm, .9 mm X .7 mm; cells 7*0 mm 

 .02 mm X .02 mm, .025 X .02, .03 X .025; underleaves 

 .075 mm long X .075 mm broad, .1 mm x .075 mm, .1 mm 

 X .1 mm; antheridia .2 mm. 



Habitat. On rocks by the side of rivulets Knysna 27,. 

 28. 10. 83 (no. 38 et 43 Hb. Kiaer.) 



Description of Pl. VI. Fig. 1. 2. Plants nat. size. 3. 

 Plant antical vie w X 11. 4. Portion of branch postical 

 view x 24. 5 — 11. Leaves X 24. 12. 13. Perigonial leaves 

 X 24. 14. Portion of leaf X 290. 15-20. Underleaves X 

 85. 21. Antheridium X 64. 



16. Riccardia fastigiata (L. et L.) 



Aneura fastigiata L. et Lindenb. in Lehm. Hep. Cap. 

 Linnaea IV p. 370 (1829.) Pugill. pl. III p. 56 (1831.) GL 

 L. N. Syn. Hep. p. 500 (1844.) 



Hab. Knysna. 



17. Marchantia tabularis N. 



Marchantia polymorpha L. et Lindenb. in Hep. Cap. 

 Linnaea IV 3 p. 370 (1829.) Hook.-f. T. in Hook.-f. Fl. 

 antarct. vol. 1 p. 168 (1844) vol. II p. 446 (1847.) 



Marchantia tabularis Nees Nat. eur. Leb. IV p. 71 

 (1838.) Gottsch. Icon. Hep. inedit. Mitt. in Hook.-f. Fl. N. 

 Zel. 2 p. 168 (1855.) Mitt. in Hook. Fl. Tasm. vol. II p. 

 240 (1860.) 



Hab. Knysna April 1883 (no. 35 Hb. Kiaer.) 



