Radula.~\ 
V. HEPATIC.®. 
531 
1-3 in. long, vaguely branched. Leaves dirty yellow or olive-green, subim- 
bricate, distichous, spreading ; upper lobe oblong-orbicular, with a thickened 
quite entire margin ; lower lobes obliquely ovate-lanceolate, obtuse, suberect, 
appressed. Perianth terminal, elongate, flattened, narrowed below ; margins 
thickened; lips truncate, quite entire. — Syn. Hep. 261. 
Northern and Middle Islands : Bay of Islands, J. D. H . ; Auckland, Sinclair ; Nelson, 
Mantell . — The thickened margins of the leaf at once distinguish this curious species. 
7. R. dentata, Mitten , mss.—'Lejeunia dentata, Mitten in PL N. Z. ii. 
159. Leaves orbicular, unequally 2-dentate, with an obtuse sinus, dorsal 
margin 3-dentate ; ventral quite entire ; lobule large, ovate-oblong, obtuse, 
quite entire. 
Northern Island, Herb. Mitten ; Auckland, Sinclair. 
21. MADOTHECA, Dumortier. 
Stems creeping or pendulous, often large, pinnately branched. Leaves dis- 
tichous, incubous, with an indexed membranous lobule at the ventral base. Sti- 
pules large, decurrent. Inflorescence dioecious. Fruit lateral, nearly sessile. 
Involucral leaves, 2 or 4, 2-lobed. Perianth obovoid, 2-convex ; mouth 2- 
lipped, entire or lacerate. Calyptra globose, persistent, bursting below the 
apex. Capsules on short fruitstalks, globose ; elaters free, with 2 spiral fibres ; 
spores large, angular. Antheridia as in Frullania. 
A considerable and widely distributed genus, both tropical and temperate. 
1. M. Stangeri, Gottsche ; — FI. N. Z. ii. 155. Stems 3-12 in. long, 
erect ; branches spreading. Leaves yellow-green, closely imbricate, very con- 
vex, decurved, suborbicular ; apex incurved, quite entire or with the ventral 
margin waved ; lobule triangular-ovate, outer side somewhat reflexed ; involu- 
cral unequal, toothed. Stipules ovate, obtuse, gibbous in the centre ; margins 
subrecurved, quite entire. Perianth lateral, sessile, 2-lipped; lips toothed.— 
Syn. Hep. 281. M. 'partita. Hook. f. and Tayl. in Lond. Journ. JBot. 1844, 
392 ; Syn. Hep. 279. M. elegantula, Mont. Yoy. au Pole Sud, 232. t. 18. f. 3. 
Throughout the Northern and Middle Islands : abundant, Menzies, etc. Lord 
Auckland’s group : on trunks of trees, J. D. H . — A very fine but variable species, the 
southern representative of the European M. platyphylla, Dum. 
22. LEJEUNIA, Libert. 
Stems prostrate or creeping. Leaves distichous, incubous. Stipules 
usually present. Inflorescence dioecious. Fruit lateral or terminal on proper 
branches. Involucral leaves 2, 2-lobed. Perianth ovoid or obovoid, terete 
or angled; angles winged or crested; mouth 3-4-lobed. Calyptra ob- 
ovoid, persistent, bursting below the apex. Capsule on short fruitstalk, 
globose, pale, 4-cleft halfway ; elaters adhering to the valves, erect, upper 
end truncate, with 1 spiral fibre. Antheridia as in Frullania, on proper 
branches. 
A very large tropical and temperate genus, of which 236 species were published in the 
‘ Synopsis Hepaticarum ’ in 1844, and many have been added since. 
