MARSUPELLA. 377 



of stem and leaves, subrotund leaves, with shallow sinus 

 and broad rotimdate' segments. Var. mccala N. (?) is a very 

 graceful form, leaves orbicular, sinus shallow, segments broad, 

 rotundate. 



From the dioicous M. sphacckda, Faiickii, and Ccsia alpuia, see 

 notes under those species for distinguishing characters. 



Dkscription of Plate CLXIII. — Fig. 1. Plants natural 

 size. 2. Portion of fertile stem x 24 (Mael Tarmachan, C. J. 

 Wild). 3. Leaf x 24 (Langdales, G. Stabler & W. H. P.). 

 4-6. Leaves x 24 (Snowdon, Nuttall). 7. Leaf x 24 (Festiniog, 

 W. H. P.). 8-10. Leaves x 24 (Arthog, J. Whitehead). 11. 

 Portion of leaf x 2U0 (Mael Tarmachan, C. J. Wild). 12, 13. 

 Bracts x IG (ditto). 14, 15. Linermost bracts with portions of 

 perianth adhering. IG. Antheridium x 85 (Arthog, J. White- 

 head). 



Description of Plate CXLIV. — Fig. 1, 2. Marsupella emar- 

 (jinata var. robust a. Leaves x 24 (Glyder Vavvr, W. H. P.). 

 3-5. Ditto X 24 (Finland, S. 0. Lindberg). G. Perigonial bracts 

 with antheridia x 24 (Glyder Vawr, W. J I. P.). 



Fig. 7. Marsupella emarginata var. saccafa Nees ? . Portion 

 of stem X 16 (Killin, G. A. Holt). 8-10. Leaves x 24 (ditto). 



2. Marsupella sphacelata [Gieseke), Bum. 



Junrjermania sphacelata, Gieseke in Lindeub. Syn. Hep. p. p. 7(> t. i. f. D-12 



(1839-41). 

 Marsivpella sphacelata, Dum. Recueil Jung. p. 24 (1835). 

 Sarcoscijphus sphacelatics, Nees Eur. Leberm. i. p. 129 (1833). 

 Xardia sphacelata (Gieseke), Carr. Trans. Bot. Edin. 5, 10, p. 878 (1870). 



Dioicous, loosely crcspitose, from medium to large in size, 

 pale or dark green, with apices tinged brown, or sometimes black 

 in colour. Stems simple or slightly ramose, flagelliferous, leafless 

 below, erect or procumbent, slender, flexuose, rootlets few. Leaves 

 usually distant, erect-patent, decurrent, amplexicaul at the base, 

 concave, cordate, bilobed to about I, sinus obtusate or acute, 



