CRYPTOGAMIA HEPATIC^. 59 



to a slight dilatation of the extremities of the branches, 

 which is scarcely obvious even to a practised eye. 



3. J. platyphylla, stem appressed, flattened, pinnate; leaves 

 imbricate, distichous, unequally 2-lobed, entire, superior lobe large, 

 roundish, inferior ones and the stipules ligulate ; fruit lateral. (Tab. 

 v. f. 3.) LIGHTF. Scot. 784. WITH. iii. 1075. HOOK. Scot. ii. 

 117. Eng. Bot. t. 798. Loud. Encyclop. No. 14987. Dill. Muse. 

 t. 72, f. 3?, 33. 



Hab. At the roots of trees, and on rocks in woods, in im- 

 bricate patches of a dull deep-green colour. 



The leaves are minutely areolar, and of a soft thickish tex- 

 ture. Their true form is detected with difficulty. 



j- -j- Leaves bifarious ; stem plane. 



4. J. trilobata, stem creeping, ascending, more or less branched ; 

 leaves bifarious, imbricated above and convex, ovate, the apex 3- 

 toothed ; stipules large, subquadrate, coarsely crenate. HOOK. 

 Scot. ii. 116. (Tab. v. f. 21.) 



Hab. Shaded woods. In the woods at Murton Craigs. 



One of the largest species, approaching J. asplenioides in size 

 and habit. The stem throws out, from the under side, 

 numerous long filiform threads, which, besides the radicle 

 fibres, are clothed with minute and distant leaves, much 

 like those of J. bicuspidata, except that they are 3-toothed. 

 The structure of the proper leaves is pre-eminently beau- 

 tiful. Their cellular tissue forms a fine lace-work, the mi- 

 niature meshes of which are somewhat circular, and each 

 ornamented with a few spots or beads in their centre. 



5. J. bidentata^ stem creeping, sparingly branched; leaves 2- 

 rowed, adnate, subquadrangular, the apex widely bifid ; stipules 

 laciniate ; fruit terminal : calyx oblong. (Tab. v. fig. 4.) L.IGHTF. 

 Scot. 774. WITH. iii. 1065. Eng. Bot. t. 606. HOOK. Scot, ii, 

 116. GREV. Fl. Edin. 277- t. 1, f. 34. Dill. Muse. t. 70, f. 11. 

 and 12. 



Hab. Mossy banks, woods, &c., very common. Spring. 



This species may often be observed creeping over the fronds 

 of Peltidea canina. It is, in exposed situations, of a pale 



