(Vol.V, 1914). franz stephani. species hepaticarum Rectolejeunea. 



Rectolejeunea Evans 



Plantae parva?, saepe exiguse, flaccidse, corticolae vel foliicolse, vulgo 

 dense depresso-cgespitantes. Caulis multiramosus, ramis inasqualibus 

 imequaliter distributis. Folia caulina imbricata, ssepe contigua, in 

 ramis remota, vulgo recte patula, parum concava, ovata vel ovato- 

 oblonga, rarius subrotunda, brevi basi inserta et facile decidua, basi 

 antica truncata, caulem haud superantia, marginibus integerrimis, 

 interdum celluloso-crenulatis. Cellulss foliorum, majusculse, vulgo 

 regulariter hexagonse, parietibus validis subtrabeculatis, trigonis nullis, 

 basales longiores, ocelli rarissimi. Lobulus folii valde variabilis, ovatus 

 vel oblongus, rarius rectangulatus, apice truncatus vel excisus, angulo 

 obtuso vel acuto, rarius spina armato. Amphigastria caulina majuscula 

 vel magna, rarius parva, transverse vel sinuatim inserta, vulgo sub- 

 rotunda, apice bifida. Inflorescentia monoica vel dioica, rarius autoica. 

 Perianthia uno veJ utroque latere innovata vel terminalia, pyriformia, 

 levia, quinqueplicata, plicis angustis longe decurrentibus, plica antica 

 s;epe obsoleta, plicis posticis interdum in unam latam confluentibus. 

 Folia floralia magna, obovato-oblonga, integerrima, rarius celluloso- 

 crenulata, lobulus magnus, plus minus profunde solutus, acutus vel 

 obtusus. Amphigastrium florale semper liberum, magnum, plus minus 

 profunde bifidum. Andrcecia sessilia, rarius in ramulis terminalia, 

 interdum ex apice vegetativa, bracteis 2-8 jugis. 



leunea apiahyna St. n. sp. Brasilia. 



irgens (S.) St. Rio Negro 

 i (G.) Evans India 



