(Vol. V,t943). FRANZ STEPHAM. species HEPATICARUM Prionolejeunea . 

 0,5 mra. lata) apice late rotundata, superne crenata, inferne nuda, lo- 

 bulo duplo breviore, lanceolato, ad l /s soluto, obtuso vel rotundato, 

 crenato. Amphigastrium florale lobulis duplo longius, obovatum, ad l /* 

 inciso-bilobatum, lobis angnste triangulatis. oblusis. ncnatis. Reliqua 

 desunt. 



Hab. Jnsulte Dominica et Guadeloupe. 



44. Prionolejeunea grossepapulosa St. n. sp. 



Dioica, mediocris, rufo-brunnea. in cortice dense depresso-eaispitans, 

 Caulis ad 25 mm. tongus, irreguJariter pinnatus. Folia caulina imbri- 

 cata, recte patula, valde roncava, apiceque arcte decurva, in plano 

 ovata (0,83 mm. longa, 0,67 mm. lata) apice rotundata, brevi basi in- 

 serta subnuda, ceterum ubique dense crenulata, subpapulosa. CeUmte 

 superae 27 |x, trigonis parvis, basales 27x36>, trigonis magnis acutis. 

 iobulus majusculus, foliotriplo brevior, oblongus, carina valde arcuata, 

 recto sinu in folium excurmis, apicc quam basis duplo angustiore, 

 oblique truncato, sub apice constrictus. Amphigastria caulina maxima, 

 c^ute quintuplo latiora, reniformia basi profunde cordata, ad V* inciso- 

 biloba, sinu ampio, lobis late triangulatis, marginibus ubique crenato- 

 papulosis. Folia floralia (in flore sterili) caulinis parum longiora, obo- 

 vato-oblonga, triplo longiora quam lata, crenulata apice rotundata, 

 tobulo vix breviore, anguste lanceolato, ad medium soluto, crenulato. 

 Amphigastrium florate foliis flor. aBquilongum, maximuni, obovato- 

 oblongum, ad l /a inciso-bifldum, lobis anguste triangulatis, marginibus 

 ubique crenulato-papulosis. Reliqua desunt. 



Hab. tmula Guadelonpe. 



45. Prionolejeunea immersa St. n. sp. 



Monoica, pusilla, flavo-virens, corticola, dense depresso c«spitosa. 

 Caulisad t5 mm. longus, irregulariter longeque ramosus. Foliacaulina 

 remotiuscula, squarrose patula, valde concava apiceque decurva, in 

 plano subrotunda (0,4 mm. longa, 0, 33 mm. lata) marginibus regula- 

 riter crenatis, basi antica nuda. CelluUe supera 18 X 27 ji, basales 

 18 X 36 p. trigonis nullis. Lobulus magnus, folio duplo brevior, oblon- 

 gus, arcuatus, carina curvatim adscendens, acuto angulo in folium 

 excurrens, apice quam basis parum angustiore, truncato, sub apice 

 constrictus. Amphigastria caulina parva, cauli aequilata, subrotunda, 

 transverse inserta, ad »/» emarginato-biloba, lobis triangulatis acutis 

 porrectis. Perianthia magna (4 mm. longa) clavata, apice profunde 

 obcordata, alis rotundatis conniventibus papulosis, rostro nullo; Folia 

 fioralia perianthio aequilonga, spathulata, apice rotundata, marginibus 

 220 



