(VOL. V, 1914). FRANZ STEPHANI. SPECIES IIEPATICARUM Hygrokjeunea. 



31. Hygrolejeunea pallida (L. et G.) St. 



Syn. : Lejeunea pallidu L. ei G. Syn. Hep., p. 762. 



Dioica mediocris, pallide virens vel flavicans, terricoia et foliicola, 

 in raniulis arborum spongiose csespitans. Caulis ad 3 cm. longus, 

 sparsim breviterque pinnaius. Folia caulina conferia, recte patula 

 concava apiceque decurva, in plano ovala (1,17 mm. longa, 0,83 mm. 

 lata) apice rotundata, brevi basi inserta, basi antica late rotundata, 

 caulem superaniia integerrima. Cellulx superse 27 X 27 [i basales 

 27X45 (x, trigonis parvis. Lobulus parvus (saepe obsoletus) folio qua- 

 druplo brevior, recte patens, late ovaius, carina leviter arcuata, levi 

 sinu in folium excurrens, apice quam basis duplo angustiore, recte 

 truncato, angulo acuto, rarius apiculato. Amphigastria caulina magna, 

 caule sexiuplo latiora, rotunda, leviter sinuaiim inseria, basi laie brevi- 

 terque rotundata, ad medium biloba, sinu recto acuio, lobis late trian- 

 gulaiis acuiis. Perianthia uno latere innovata, parva, opiime obovaia 

 (1 mm. longa, 0,67 mm. lata) apice truncato-rotundaia, plicis posticis 

 angusiis, longissime decurreniibus, parallelis, rostro parvo. Folia 

 floralia periantbio aequilonga, ovata obtusa, lobidus parum brevior, ad 

 medium vel magis profunde solutus, angusie lanceolatus obtusus. 

 Amphigastrium florale foliis floralibus aequilongum, ex angusia basi 

 abrupte ampliatum, subroiundum (0,9 mm. longum, 0,83 mm. latum) 

 ad V^ inciso-bilobatum, rima angusta, lobis late triangulatis obtusius- 

 culis. Andrmcia sessilia, bracteis 3-5 jugis. 



Hab. America tropica, valde communis. 



32. Hygrolejeunea patellifera S. Hep. Am. And., p. 234. 

 Dioica minor pallide virens, aliis hepaticis consociata. Caulis ad 



15 mm. longus, sparsim breviterque pinnatus. Folia caulina conferta, 

 oblique patula, valde concava, navicularia, in plano late triangulata 

 (0,83 mm. longa, 0,9 mm. lata) apice obtusa, ad medium accreta, basi 

 aniicatruncato-rotundata. Cellulx supera^ 18x18 jx. basales27x36[x, 

 trigonis nullis, cellulaf marginales leviier crenulatae. Lobulus maximus, 

 folio duplo brevior, in situ fusiformis, involutus ex parte occulius, in 

 plano ovato oblongus, subduplo longior quam laius, carina oblique 

 adscendens, leviter arcuata, levi sinu in folium excurrens, apice quam 

 basis subduplo angustiore, oblique truncato, angulo acuio. Amphi- 

 gastria caulina magna, caule iriplo latiora, laie obovato-obconica, 

 sinuatim inseria, apice breviter inciso-biloba, sinu angusto, lobis 

 acutis. « Perianthia anguste obpyramidata vel subpyriformia, vix com- 

 pressa, alte quinque-carinata, carinis sparse celluloso-tuberculosis, ex 



538 



