208 HEPATIC^. 



1. Scapania compacta {Hot It), Dum. 



Jumjermania compacta, Roth, Tent. Fl. Germ. 3, p. 375 (1800). 



Jungermania resupinata, Web. et Mohr Crypt. Germ. p. 427 (1807) ; Hook. 



Brit. Jung. n. 23 (1810). 

 Radula resupinata, Dum. Oomm. Bot. p. 112 (1823). 

 Scapania compacta, Dum. Recueil, p. 14 (1835). 

 Plagiochila compacta, M. et N. in Nees Nat. Eur. Leb. Ill, p. 510 (1838). 



Paroicous, loosely ceespitose, small, yellowish-brown. Steins 

 firm, flexuose, simple or innovantly branched, suberect or prostrate, 

 radiculose up to apex, rootlets dirty-white. Leaves subtrans- 

 versely inserted, approximate, accrescent, shortly and subequally 

 bilobed, antical lobe slightly smaller than the postical, lobes 

 rotund or semi-oval, entire or rarely denticulate, texture firm, 

 epidermis smooth, cells smallish to medium, subguttulate, walls 

 somewhat thick, trigones large. Bracts simihir to the leaves but 

 larger, often denticulate. Perianth large, projecting much beyond 

 the bracts, broadly obovate or turbinate, mouth wide, entire or 

 irregularly denticulate. Antheridia (about 4 to 6 in each bract) 

 oval, situated immediately below the perianth at the base of the 

 bracts, which are slightly swollen. 



Fruits April, May, June. 



Dimensions. — Stems \ inch long, -3 mm. to '4 mm. diam., 

 with leaves 2' mm. wide; leaves, upper, antical lobe TS mm. x 

 1-25 mm., postical 1"75 mm. x 1-25 mm., lower, antical lobe 

 1- mm. X 75 mm., postical 1-25 mm. x 75 mm. ; cells -03 mm. ; 

 bracts, antical lobe 1"5 mm. x 1' mm., postical 175 mm. x P mm. ; 

 perianth 3* mm. x 2" mm. wide at the mouth, 2-25 mm. x 1-5 mm., 

 antheridium '2 mm. x -175 mm. 



JJab. — Growing on clayey and sandy banks, and on mud- 

 covered walls. Generally distributed. 



1. Common, West Cornwall, W. Curnow. 2. Isle of Wight, 

 G. E. Bavies. 3, 4. About Edgefield and Hempstead Hill, 

 Norfolk, Rev. R. B. Francis. Norfolk and Sufi'oik, Br. W. J. Hooker. 

 7. Penmaenpool, Merionethshire, E. M. Holmes, Dolgelly, 

 Merionethshire, W. H P. Festiniog, Carnarvonshire, Br. Car- 



