SCAFANIA. 233 



retains, all the length of the stem, its relatively small size ; in 

 S. undulata the two lobes usually become more equal near the 

 apex, the cells are usually larger and the leaves more delicate ; in 

 8. irrifjaa the postical lobe is more or less acute, the antical never 

 reniform, and the lobes are more equal in size. 



Description of Plate XCIII. — Fig. 1. Plants natural size. 



2. Portion of stem, antical view x 24 (Lapland, S. O. L.). 



3. Portion of stem, postical view x 24 (Ben Lawers, West)- 



4. Portion of leaf x 290. 5. Perianth x 31 (5iO, G. & K). 



15. Scapania rosacea [Corda), Dniii. 



Jungermania rosacPM, Corda in Sturm. Deutschl. Fl. 11, xxli.-xxlii. p. !)G, f. 29 



(1832). 

 Scapania rosacea, Dum. Recueil. p, 14 (183.")). 



Plagiochila rosacea, M. & N. in Nees, Nat. Eur. Leberm. Ill, p. 525 (1838). 

 Scapania curta, var. rosacea, Carr. Brit. Hep. p. 87 (1874-76). 



Dioicous ; csespitose ; small ; claret coloured. Stems simple 

 or rarely sparsely innovant, erect or erecto-decumbent, somewhat 

 tender and fleshy; radiculose, rootlets dirty-white. Leaves 

 approximate, patent-divergent, distichous, unequally bilobed, 

 postical lobe obliquely obovate, cultriform, shortly cuspidate or 

 apiculate, plane or slightly concave, antical lobe much smaller, 

 subquadrate, obliquely ovate to cuneiform, acute, ascending ; 

 margin quite entire ; epidermis smooth, texture somewhat lax ; 

 cells small, roundish, walls and angles thickened, no trigones. 

 Bracts rather larger than the leaves, with apices of the lobes more 

 rounded. Perianth projecting about half way beyond the bracts, 

 ovate-oblong, compressed, subplicate, mouth truncate, entire or 

 slightly irregular. Male stems rather smaller ; perigonial bracts 

 on the upper half, approximate or imbricate, erecto-patent, more 

 equally bilobed than the leaves, lobes more rounded, swollen at 

 the base ; antheridia large, roundish-oval. 



Fruits March, April, May. 



Dimensions. — Stems J to |- inch long, 3' mm. thick, with 

 leaves 1"5 mm. to 2" mm. broad; leaves, antical lobe 'G mm. long 



