Ceratolejeunea. franz stephani. species hepaticarum (Voi . V, 1913). 

 iiiediiim solntiis, lanceolatus integerrimus \vl spiua armatiis. Amphi- 

 gastrium jtorale lobulis aequilongum, obovatum, Iiberum, ad V 3 inciso- 

 bilobatum, rima angusta, lobis anguste triangulatis, extus pauciden- 

 tatis. Andrctcia sessilia, bracteis paucijugis. 

 Hab. Insulx mascarense (Africa orientalis). 



56. Geratolejeunea mauritiana St. Bot. Gaz. 1890, p. 285. 

 Monoica minor, fusco-bruimea, corticola et loliieola. Caulis ad loniui. 



longus, sparsim invgulariterque ramosus. Folia caulinu imbricata, 

 recte patula, parum concava, in plano late ligulata (0,9 mm. longa, 

 0,67 iiiin. lata) apice late truncato-rolundala \el apiculo aucta, brevi 

 basi inserta, basi antica longe truncata. Cellutte supene 18 [i, basales 

 18 X 27 5X, ocetli geminati 27 X 54 ji. Lobulus majusculus, folio 

 quadruplo brevior, recte patens, oblongus, duplo longior quam latus. 

 carina arcuata, sinu subrecto in folium excurrens, apice quam basis 

 duplo angustiore, oblique tnmcato, angulo apiculato, sub apice leviter 

 constrictus. Amphigastria caulina magna, caule sextuplo latiora, 

 sinuatim inserta, late triangulata, inferne 0,67 mm. iata, ad medium 

 inciso-biloba, rima angusta lobis late triangulatis obtusis. Perianthia 

 uno latere innovata majuscula (1,4 mm. longa) oblonga, elliptica, 

 quadricornuta, cornibus angustis 0,4 mm. iongis attenuatis, superne 

 cylindricis obtusis porrectis vel leniter divergmtibus. Folia /toralia 

 perianthio duplo breviora, lanceolata acuta, superne remote denticu- 

 lata; lohulus duplo brevior, ad V 3 solutus, angustus acutus. Amphigas- 

 trium florale Iobulis asquilongum, obovato obconicum, liberum, ad V 3 

 inciso-bifidum, rima angusta, lobis obtusis vel acutis, extus sparsim 

 denticulatis. Andnnto s.-ssilia. bracteis trijugis. 

 Hab. Insula Mauritius (Africa orientalis). 



57. Geratolejeunea megalophysa S. Hep. Am. And., p. 202. 

 Autoica minor, rufo-brunnea, foliicola. Caulis ad 15 mm. longus 



irregulariter multiramosus. Folia caulina imbricata, recte patula, valde 

 concava apiceque decurva, in plano ovata (1 mm. longa, 0,67 mm. lata) 

 subsymmetrica, apice obtusa vel apiculata, paucidenticulata vel sub- 

 integra, brevissima basi inserta, basi antica longe truncata. Cellulne 

 superai 18X18 u., basales 27x36 p. validae. Ocellus 36X36 -x. 

 Lobulus majusculus folio quadruplo brevior, oblongus, duplo longior 

 quam latus, carina oblique adscendens substricta, levi sinu in folium 

 excurrens, apice quam basis parum angustiore, oblique truncato, 

 angulo obtuso, sub apice constrictus. Amphigastria caulina majuscuia, 

 caule plus duplo latiora, subrotunda, transverse inserta, ad medium 

 425 



