Coinplemeiit au Bidletm de VHerbier Boissier, aniiee 1917. 



SPECIES HEPATICARUM 



AUGTORE y^ ^ gV 



Franz STEPHANI "^ TAt^*^^'' 



Riccia 



1 . Riccia acutisulca St. 



Pusilla, pallide virens, gracilis. Fro7is 1 cm. longa, repetito furcata, 

 antice profunde acuteque sulcata, alse convexse, marginibus subacutis, 

 iaxse reticulatse. Costa strato antico latior, ventre subplana, utrinque 

 umbonatim prominens. Squamoe posticse hyalinse. Sporm maturse desunt. 



Hab. Australia. (Goebel legit.) 



2. Riccia Ghevalieri St. 



Dioica, mediocris, pallide virens, gregarie crescens. Frons 6mni. 

 longa, furcata, furcis late iinearibus, brevibus, parum divergentibus, 

 subplanis, sub apice tantum breviter canaliculatis, postice late convexa, 

 alis leniter attenuatis, obtusis, in sectione transversa quadruplo latior 

 quam crassa; costa humilis plano convexa, stratoantico duplo humilior 

 et paruin angustior, cavernis sub 20 in frondis diametro. 



Hab. Africa. Ubangi. (Chevalier legit.) 



3. Riccia Chudoana St. 



Dioica, exigua, pallide flavicans. Frons ad 3 mm. longa, 1 mm. lata, 

 repetito furcata, in sectione transversa 2,75 mni. lata, 1,5 mm. alta, 

 antice plana, marginibus obtusis; costa huraillima 1,5 mm. lata; squa- 

 mse posticse magnse, hyalinse. Sporx fuscse 54 \x, cuticula muriculata. 



Hab. Africa. Sahara. (Chlideau legit.) 



23 Avril 1917 1 " 1 



