Handbook of British Hepaticae : containing descriptions and figures of the indigenous species of Marchantia, Jungermannia, Riccia and Anthoceros . 200 HANDBOOK OF BRITISH HEPATIC/E. Gymnocolea affinis, Wih., Bum. Stem procumbent, without stipules, leavesrounded, hyaline, acutely bifid ; laciniae ob-tuse; perichaetial leaves spreading. Perianthpear-shaped, contracted at the apex, mouthdentate. Jungermannia affinis, Wils. in Brit. Fl. V.,iii. Jungermannia turbinate!, Wils. Eng. Bot.Supp. t. 2744. Jungermannia IVilsoniana,Nees Eur. Leb. III., 54S ; Gott. and Rab.Exs. 447 ; Cooke Hep. f. 74. Gymno

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Handbook of British Hepaticae : containing descriptions and figures of the indigenous species of Marchantia, Jungermannia, Riccia and Anthoceros . 200 HANDBOOK OF BRITISH HEPATIC/E. Gymnocolea affinis, Wih., Bum. Stem procumbent, without stipules, leavesrounded, hyaline, acutely bifid ; laciniae ob-tuse; perichaetial leaves spreading. Perianthpear-shaped, contracted at the apex, mouthdentate. Jungermannia affinis, Wils. in Brit. Fl. V., iii. Jungermannia turbinate!, Wils. Eng. Bot.Supp. t. 2744. Jungermannia IVilsoniana, Nees Eur. Leb. III., 54S ; Gott. and Rab.Exs. 447 ; Cooke Hep. f. 74. Gymnocoleaaffinis, Dumort. Hep. Eur. p. 65. In moist shady places under banks. (EarlySpring.) Stems procumbent, simple or branched, leaves roundish, concave, acutely bifid, coarsely reticulated, the seg-ments obtuse, thoseof the in volucre largerthan the rest; fruitterminal ; perianthpear-shaped, plicate, contracted, andtoothed at the mouth. (fig- H3)• Separated from J. inflata, to which its trivial name applies, I43- by the procumbent stems, large reticulations, and less obtuse segments. HANDROOK OF BRITISH HEPATICiE. 201 of the leaves, and, above all, the plicated upperportion of the perianth. Perigonial leaves onseparate shoots crowded, concave, sometimes three-toothed, anterior segment in flexed, forming anauricle. Genus 28. HARPANTHUS, Nees. Dioicous. Involucre small-leaved, lateral, incurved from the interposition of two sti-pules, dissimilar to the leaves. Perianth fusi-form, terete, mouth three or four fid, laciniaeunequal, entire, connate at the base with thecalyptra, which is adherent up to the middle, apex free. Capsule four-valved, coriaceous, naked. Elaters double, naked, deciduous.—Nccs Eur. Lcb. II., 351. Plants stipulate, leaves subcurrent, flattened, divided. Fertile shoots very short, ventral, at length sub-lateral. Perianth exscrted, terete, the lower halfthickened; mouth contracted, three to four toothed.Calyptra fleshy, confluent two-thirds with theperianth. Invol