(Vol. V, 1944). franz stephani. species hepaticarum Hygrolejeuneu. 



III. Asia tropica 



54. Hygrolejeunea crassicaulis St. n. sp. 



Sterilis magna, robusta flaccida, dilute brunnea, in cortice csespitans. 

 Caulisad 5 cm. longus, remote breviterque pinnatus, ramis longioribus 

 interjectis similiter pinnatis. Folia caulina conferta, valde concava 

 apiceque decurva, in plano ovato-triangularia (1,33 mm. longa, basi 

 1,25 mm. lata) apice rotundata, ad medium inserta, basi antica valde 

 ampliata, caulem excedentia. Cellulse 27 X 36 jx, ubique aequales, tri- 

 gonis majusculis, superne nullis ; cuticula minute aspera. Lobulus 

 magnus, in situ fusiformis, valde involutus, ex parte occultus, in plano 

 ovato-triangulatus, folio triplo brevior, carina oblique adscendens, 

 arcuata amplo sinu in folium excurrens, apice quam basis triplo angus- 

 tiore, oblique truncato, angulo obtuso vel mamilliformi. Amphigastria 

 caulina maxima, late reniformia, in plano 1,33 mm. lata, 0,67 mm. 

 longa, integerrima, apice arcte recurva, leviter sinuatim inserta. 

 Hab. Borneo. 



55. Hygrolejeunea decurrens St. Hedwigia, 1896, p. 101. 

 Monoica, magna robusta olivacea, in cortice dense depresso-caespi- 



tans. Caulis ad 6cm. longus, irregulariter ramosus, ramis simplicibus, 

 sub flore tantum innovatis. Folia caulina imbricata, recte patula concava 

 apiceque decurva, in plano subrotunda (1,58 mm. longa, 1,41 mm. 

 lata) apice obtusiusula, ad medium accreta, basi antica truncato- 

 rotundata. Cellulfe 18x18^, basales 18x36jj., trigonis magnisacutis. 

 Lobulus exiguus ( vulgo obsoletus) late conicus, carina oblique adscen- 

 dens substricta, levi sinu in folium excurrens, apice quam basis triplo 

 angustiore, oblique exciso, angulato apiculato. Amphigastria caulina 

 maxima, reniformia (1,1 mm. lata, 0,67 mm. longa) profunde sinuatim 

 inserta, apice late truncato-rotundata, integerrima. Perianthia uno 

 latere innovata, grosse clavata, gigantea (2 mm. longa, superne 0,83 mm. 

 lata) medio infero angusto quasi pedicellato, medio supero ovato, apice 

 rodunta, rostro valido, plicis posticis angustis breviter decurrentibus, 

 repando-angulatis. Folia floralia perianthio duplo breviora, obovato- 

 oblonga, apice rotundata, integerrima ; lobulus duplo brevior, anguste 

 lanceolatus, profunde solutus, acutus vel obtusus. Amphigastrium florale 

 550 



