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



Macrolejeunea Spriice 



Planta? luediocres vel parvse, rarius elatse, corticolse. Caulis irre- 

 gulariter raniosus, ramis brevibus. Folia caulina late ovata, acuta vel 

 apiculata vel late rotundata, integerrima vel sub apice paucidentata, 

 parum imbricata, recte patula, subplana, basi antica semper truncata. Cel- 

 lulse foliorum majusculae, basales elongatae, trigonis parvis, in una specie 

 dense minuteque asperge. Lobulus vulgo parvus, apice recte truncatus, 

 angulo semper obtuso. Amphigastria cauliua magna, plus minus pro- 

 funde sinuatim inserta, bifida, sinu angusto, lobis acutis. Inflorescentia 

 dioica. Perianthia in ramulis terminalia (innovatione nulla) quinque- 

 plicata levia. Folia floralia paucijuga, intiraa parva, biflda, lobulis lan- 

 ceolatis integerrimis. Amphigastrium florale intimum magnum, lobulis 

 connatum vel liberum, breviter bifldum. Androeeia parva, in caule ses- 

 silia, bracteis confertis paucijugis. 



1. Macrolejeunea Knyana St. n. sp. 



Dioica, minor, dilute brunnea corticola. Caulis ad 15 mm. longus, 

 irregulariter multiramosus. Folia caulina integerrima, parum imbri- 

 cata, subrecte patula, parum concava, in plano, ovata, optime symme- 

 trica (1 mm. longa, 0,75 mm. lata) apice obtusa, ad medium accreta, 

 basi antica truncato-rotundata breviterque decurrens. Cellulse 27x27 ji, 

 basales 27X36 ijl, trigonis parvis. Lobulus parvus, folio quintuplo 

 brevior, ovato-triangulatus, carina oblique adscendens, leviter arcuata, 

 levi sinu in foliurn excurrens, apice quam basis duplo angustiore, recte 

 truncato, angulo obtuso. Amphigastria caulina majuscula, caule triplo 

 latiora, subrotunda, leviter sinuatim inserta, ad medium biloba, sinu 

 semirecto obtuso, lobis triangulatis obtusiusculis. Perianthia in ramo 

 terminalia, in statu juvenili pyriformia, matura optime obconica, apice 

 late truncato-rotundata (1,17 mm. longa, sub apice 0,83 mm. lata) inte- 

 gerrima, plicis posticis angustis, ad medium decurrentibus, late diver- 

 gentibus. Folia floralia intima pusilla 0,5 mm. longa, lanceolata acuta 

 vel obtusiuscula, lobulus parum brevior, lanceolatus acutus, ad medium 

 solutus. Amphigastrium florale intimum foliis floralibus aequilongum, 

 obovato-obconicum, liberum, ad V^ inciso-bifidum, rima angusta, lobis 

 triangulatis apiculatis. Andrcecia desunt. 



Hab. Insula Madeira. 



511 



