176 HEPATICJE. 



Desceiptiox of Plate LXVI. — Fig. 1. Plants natural size. 

 2. Portion of stem (after Hooker). 3. Portion of stem, antieal 

 view X 24 (Sweden, S. 0. Linclberg, also the following). 4-9. 

 Leaves x 24. 10. Portion of leaf x 290. 11-15. Stipules x 

 24. 16-20. Sub-bracts x 24. 21. Sub-bracteole x 24. 22. 

 Bract X 24. 23. Bracteole x 24. 24. Perianth x 24. 25. 

 Cross-section of perianth near the base x 24. 26. Ditto, near 

 the middle. 27. Ditto, near the apex. 



Subgenus 3. CEPHALOZIELLJ, Spnice. 



Plants small or minute, often creeping amongst mosses or 

 other hepatics, or densely csespitose, sublurid. Stem for the size 

 of the plant very often firm, generally at the base subrhizomatous, 

 but flagella wanting ; cortical cells 10-20, hardly different from the 

 interior. Lower leaves distant subobliquely inserted (succubous) ; 

 upper more crowded, or almost exactly transverse, the length 

 (•1--15 mm.) rarely exceeding the breadth of the stem, very often 

 cuneate, to the middle or more bifid, carinate, segments subcompli- 

 cate or divergent, entire or in one species subdenticulate, rarely 

 spinulose ; cells small-minute (diam. vg-yVr nim.) subquadrate 

 or guttulate. Stipules very variable, sometimes in one and the 

 same species everywhere present, now altogether obsolete ; always 

 (where present) small, narrow, entire or bifid. Inflorescence for 

 the most part dioicous, in few monoicous ; ? very often terminal 

 on the chief stem, in other species cladogenous, or in various 

 places. Bracts moderately large 3 -pairs (or more) bilobed, tristi- 

 chous, very often with the bracteole highly connate, lobes generally 

 denticulate or spinulose. Perianth for the most part elongate and 

 narrow, leptodermous, acutely prismatic, keels rarely reduced to 3, 

 sometimes 3, 4, 5, and also 6 in the same species, mouth denticu- 

 late or ciliolate, rarely submuticous. Calyptra delicate. Capsule 

 oblong-globose. Androecia in the middle or at the end of the 

 chief stem or elongated branches, bracts not smaller than the 

 leaves, very rarely produced on slender postical branches. 



