Handbook of British Hepaticae : containing descriptions and figures of the indigenous species of Marchantia, Jungermannia, Riccia and Anthoceros . llii, Gottsche remarks that the former has nonerve, the latter has a nerve. In the former allthe cells are alike, and no midrib with ligneousfibres is present. Genus 38. BLASIA, undivided, bladdery, adnate to HANDBOOK OF BRITISH HEPATICiE. 255 the apex of the frond ; peduncle emerging from the apex. Perianth internal. Capsule four - valved, coriaceous, naked. Elatersdouble, naked, deciduous. Plants without leaves, frondose, the fronds
Handbook of British Hepaticae : containing descriptions and figures of the indigenous species of Marchantia, Jungermannia, Riccia and Anthoceros . llii, Gottsche remarks that the former has nonerve, the latter has a nerve. In the former allthe cells are alike, and no midrib with ligneousfibres is present. Genus 38. BLASIA, undivided, bladdery, adnate to HANDBOOK OF BRITISH HEPATICiE. 255 the apex of the frond ; peduncle emerging from the apex. Perianth internal. Capsule four - valved, coriaceous, naked. Elatersdouble, naked, deciduous. Plants without leaves, frondose, the fronds havingnerves. Blasia pusilla, Linn. Utricular involucre immersed, adnate to thefrond ; elaters double, free. Form j3 capsulifera, Hubn. Jungermannia blasia, Hook. Br. Jung., t. 82,84. Blasia pusilla, Linn. Sp. 1605 ; Carr. andPears. Exs. No. 145, 146, 287 ; Cooke Hep. fig- 173- On the margin of ditches. (Fr. Mar. Apr.) Growing in patches, often imbricating. Radiclesmore or less numerous, and on different parts, fre-quently along the | ^,/-vs Aiunderside of the nerve. /|\ G )\ r Jr^il /3/Frond horizontal, ,-ixOprostrate, the apices rXj£0^S. often erect, \ to 1inch long, for the mostpart oblong, some-times simple, or witha single lateral branch, i77- but sometimes more divided dichotomously; atothertimes the ramification is almost palmate, having theends forked, extremities always wider than thebase, more rarely the fronds are stellate, substance 256 HANDBOOK OF BRITISH HEPATIC*. between fleshy and membranaceous, thinnest at themargin, which is waved and obtuselylobed, the lobesoften incurved (fig. 177). Throughout the centreof the frond, and its divisions, runs an evident andbroad nerve, most prominenton the underside, wholeplant pale green. Closely adpressed to the nerve onthe underside are scattered small, oval scalesresembling stipules, which are unequally oblong-lanceolate, and acuminate, inflated,semi-transparent. Capsule ovately globose, whitishat the base,
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