JUNGEIIMANIA. 387 



frontally flattened upper portion of stem, its pleasant li^lit ^reen 

 colour, the crisped, dentate leaves, and the leaf cells lilled with 

 numerous granules. When dry the specimens do not retain their 

 distinctive colour, but, on the contrary, turn a dingy black. 



Description of PL.vrE CXLIV. — Fig. 1. Plants natural size. 



2. Portion of male stem x K> (Bettws-y-Coed, W. H. P.). 



3. Upper portion of fertile stem x IG (France, Du Buysson). 

 4-6. Leaves x 24 (487 G-. & R). 7. Leaf x 24 (Ben Nevis, 

 West). 8. Ditto x 24 (Da Buysson). 1). Portion of leaf x 200 

 (487 Gf. &R). 10, IL Bracts x 24 (Du Buysson). 12. Ditto 



X 16. 13. Sub-bract x 24 (ditto). 14. Perianth x 16 

 (228 Gr. & E.). 15. Mouth of perianth x 16 (Du Buysson). 

 16. Cilia from mouth of perianth x 85. 17. S]iores x 290. 

 18. Elaters x 290. 19, 20. Perigonial bracts x 24. 21. An- 

 theridium x 85 (ditto). 



23. Jungermania exsecta, Schmid. 



Jungermania exsecta, Schmidel, Ic. et anal. p. 241, t. (12, f. 2 (excl. f. fi-uctif. et 



10, 20), (1747); Hook. Brit. Jung. t. 14 et suppl. t. 1 (1<S1G), 

 Loj)hozia exsecta, Dum. Recueil, p. 17 (1835). 



Dioicous, csespitose, small, of a green, yellowish or light brown 

 colour. Stems prostrate or suberect, simple or slightly branched ; 

 radiculose, rootlets few, dull white, sterile stems often depauperate, 

 apex gemmiparous. Leaves equitant, distichous^ imbricate, 

 ap[)roximate or distant, horizontal or slightly ascending, some- 

 times secund, convolute-complicate, concave ; outline, when 

 explanate sub-ovate, antical lobe small, broadly subulate, acute or 

 apic'ulate, postical lobe much larger, semi-ovate, entire or bidentate, 

 segments acute, minutely bidentate or erose, margin entire ; 

 texture gattulate, cells very small, roundish-quadrate, near central 

 base oblong, walls thick, angles thickened, no trigones. No 

 sti|)ules. Bracts roundish or roundish-quadrate in outline, when 

 explanate ; tri- or quadrifid, segments acute ; convolute-complicate 

 like the leaves. No bracteole. Perianth projecting about half 

 beyond the bracts, terminal, oblong, oblong-obovate or cj^lindrical, 



Y 



