JUNGERMANNIA HAMATIFOLTA. 
(TAB. LI.) 
Jungermannia, surculo repente, filiformi, flexuoso, vage ramoso ; foliis distichis, bilobis ; lobis 
inaequalibus, superioribus majoribus, ovatis, acuminatis, apice saepissimb curvatis ; inferioribus 
involutis : stipulis ovatis, acute bifidis : fructu laterali ; calycibus obovatis, pentagonis ; ore 
contracto, elevato, dentato. 
/S. echinata ; foliis elegantissimb echinatis. 
Hab. Rocks upon Ingleborough, Yorkshire ; and in the Den of Rechip, near Dunkeld. — 
About Bantry, upon the stems of Ulex nana, and in other situations in that neighborhood, 
frequently intermixed with J. calyptrifolia. Miss Hutchins. — Mr. Lyell also finds it 
growing with the same species near Keswick, Cumberland. — On heath in the county of 
Keriy. Dr. Taylor. — /3. was discovered upon the trunks of trees at Torquay, Devonshire; 
and has likewise been found at Woodlands, near Dublin, by Dr. Taylor. — (Its fructifi- 
cation, both male and female, is produced in the early spring months.) 
Plant growing in small, crowded, green patches, appearing to the naked eye like clusters of 
minute granules. 
Roots very small, whitish fibres, distantly scattered, as in J. serpyllifolia, along the under 
side of the stem ; not unfrequently issuing in little bundles from near the base of the 
stipules. 
Surculi from two or three lines to half an inch in length, extremely slender, filiform, 
flexuose, procumbent, lying over each other in an imbricated manner, or creeping in a less 
clustered form. Each individual is irregularly once or twice divided in a subdicliotomous 
manner, the segments varying much in their length, as well as in their direction. The 
texture is delicate, composed of oblong cellules : the color a pale green. 
Leaves (f. f. 5. 6- 7) rather closely placed, though seldom so much so as to be imbricated, 
bifarious and alternate, erecto-patent with regard to the stem, formed of two unequal 
portions, or lobes, of which the upper one is the largest, yet scarcely exceeding the tenth 
