(VOL. V, 1944). FRANZ STEPHANI. SPECIES HEPATICARUM Hygrolejeunea. 



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



Syn. : Lejeunea pallida L. et G. Syn. Hep., p. 762. 



Dioica raediocris, pallide virens vel flavicans, terricola et foliicola, 

 in ramulis arborum spongiose caespitans. Caulis ad 3 cm. longus, 

 sparsim breviterque pinnatus. Folia caulina conferta, recte patula 

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

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

 caulem superantia integerrima. Cellulse superae 27 X 27 ^ basales 

 27X45 ji, trigonis parvis. Lobulus parvus (ssepe obsoletus) folio qua- 

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

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

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

 caule sextuplo latiora, rotunda, leviter sinuatim inserta, basi late brevi- 

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

 gulatis acutis. Perianthia uno latere innovata, parva, optime obovata 

 fl mm. longa, 0,67 mm. lata) apice truncato-rotundata, plicis posticis 

 angustis, longissime decurrentibus, parallelis, rostro parvo. Folia 

 floralia periantbio a^quilonga, ovata obtusa, lobulus parum brevior, ad 

 medium vel magis profunde solutus, anguste lanceolatus obtusus. 

 Amphigastrium florale foliis floralibus aequilongum, ex angusta basi 

 abrupte ampliatum, subrotundum (0,9 mm. Iongum, 0,83 mm. latum) 

 ad 74 inciso-bilobatum, rima angusta, lobis late triangulatis obtusius- 

 culis. Andrazcia «'ssilia. 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 

 anticatruncato-rotundata. Cellulse supera; 18x18 (x, basales 27X36 |x, 

 trigonis nullis, cellula? marginales leviter crenulate. Lobulus maximus, 

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

 plano ovato oblongus, subduplo longior quam latus, carina oblique 

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

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

 gastria caulina rnagna, caule triplo latiora, late obovato-obconica, 

 sinuatim inserta, 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 



