Ricciella. franz stephani. spegies hepaticarum. 363 



multiramosa, ssepe uno latere magis furcata, furcis longis simplicibus 

 mixta, ramificatio dein valde irregularis; ceterum anguste linearis, apice 

 breviter biloba, antice posticeque plana, marginibus longe attenuatis. 

 tenerrimis; costa humillima 2-3 cellulas alta, duplo angustiore quam 

 stratum anticum i. e. marginibus ultra costam late exstantibus; cavernce 

 amplas 8 in diametro frondis, lamellis subhorizontalibus. Sporae ol (i, 

 rufo brunnese, late alatse, ala eroso-dentata, reticulatim lamellatEe., foveo- 

 lis 5 [JL, ex angulis papillatae. 

 . Hab. Brasilia ad flum. Ramos (Spruce). 



X. Frons magis costata, alis attenuatis costam late superantibus. 



90. R. muscicola St. Hedwigia 1885. 



Dioica. mediocris, muscicola vel terricola, subc8espitosa,rosulas40mm. 

 latas formans; frons 8 mm. longa, bi-trifurcata, furcis siiblinearibns, 

 apice triincato-rotundatis, breviter bilobis. sub apice leniter canaliculatis, 

 ceterum subplanis, alis tenerrimis, ultra costam late exstantibus, ob 

 lamellas perlucentes pulchre reticulatis. Costa angusta. postice plana. 

 lateribus brevibus abrupte adscendentibus. Spora? 60 [i. late alatse, dense 

 lamellatEe, lamellis regulariter ramosis, ad reteni, sxpe interruptum con- 

 fluentibus. 



Hab. Australia, Trinity Bay (Karsten) Ord River (Nyasly), 



91. R. purpurascens L. et L. Pugill. pl. lY (1832), p. 23. 

 Dioica, major, stolonifera, tenerrima, hyalina vel rosea, irregulariter 



furcata, furcis seepe brevibus, aliis elongatis attenuatis in stolones abeun- 

 tibus, normaliter apice profunde biloba, antice plana, costa angusta, 

 abrupte producta postice plana alis tenerrimis costam late superantibus ; 

 stratum anticum humile, cavernis amplis formatum ; squamae nullse. Sto- 

 lones longi, hyalini, e niedio postico costae orti, distincte bilaterali, i. e. 

 postice tantum radicelliferi, convexi, antice profunde canaliculati, mar- 

 ginibus conniventibus, strato lamellifero nullo, ubique cellulis parenchy- 

 maticis, haud chlorophylliferis, aedificati. Spora3 juveniles solum adsunt 

 — planta mascula ignota. 



Hab. Caput Bonae Spei, in monte Tabulari (Ecklon). 



Die Stolonen entwickeln hier also keine knollenformigen Reservestoli'- 

 hehalter, sondern stellen nur reducirte Laubsprosse dar, w^elche unter 

 der Mutterpflanze am Boden wurzelnd hinkriechen und sobald sie an die 

 freie Erdoberflache gelangen, zum Thallus auswachsen. 



38 



