HANDBOOK OF BRITISH HEPATIC^. 183 



subquadrate, recurved, trifid ; perichaetial 

 leaves rather long ; perianth lateral, ovate, 

 plicate ; stipules none ; fruit at length lateral. 

 Jungermannia Lyoni, Tayl. Trans. Bot. Soc. 

 Edin. I., p. 116, t. 7; Spruce Trans. Bot. 

 Edin. III., 204; Carr. and Pears. Exs. 

 No. 31. 



Amongst moss. (Plate 4, fig. j"j.) 



Stems 2 or 3 inches long, erect, or ascending, with 

 entangled short, flat, simple, pale yellowish roots, 

 along the inferior side. Colour of stems dark chest- 

 nut brown when dry, paler above when wet. Leaves 

 pale brownish yellow, with a slight greenish hue 

 when moist, rounded quadrate, half embracing, 

 concave at the base, divided at the outer side into 

 three (rarely four) laciniae, middle tooth usually 

 smallest. Perichaetium of two leaves, the lower quad- 

 rind, the upper five or six fid, both recurved ; 

 calyx swollen and smooth, cylindrically obovate, 

 about five plaits at the top, mouth shortly ciliate. 

 Capsule oblong-rounded, pedicel short. Easily 

 distinguished from J. barbata by the absence of 

 stipules, more oblong calyx, less concave leaves, 

 which are less imbricated, and subsquarrose. It 

 differs from J. incisa by its greater size and ascend- 

 ing stems, by the leaves being rounded anteriorly, 

 and having the lower laciniae reflexed, by the more 

 tumid and less plicate calyx, by the squarrose 

 perichaetial leaves, by the greater distance between 

 the leaves, and their paler colour. Taylor. 



Jungermannia socia, Nees in Syn. p. in, 

 appears in British lists apparently on 



