(VOL. V,1913). franz STEPHANf. SPECIES hepaticarum Prionolejeuneu . 

 10. Prionolejeunea alata St. n. sp. 



Monoica, pusilla, pallide flavicans, flaccida, corticola. Caulis ad 15 min. 

 longus, parum irregulariterque ramosus, ramis brevibus. Folia caulina 

 contigua, recte patula, parum concava, in plano late ovata (0,67 mm. 

 longa, 0,5 mm. lata) acuta, dense serrulata. Cellulw superse 18X21 (*. 

 basales 18x27 |a trigonis nullis. Lobulus majusculus folio triplo brevior, 

 oblique adscendens, anguste ovatus, carinabene arcuata, sinu subrecto 

 in folium excurrens, apice quam basis duplo angustiorc, truncato, 

 anguio spina armato. Amphigastria caw/maparva, reniformia, sinuatim 

 inserta, caule duplo latiora, apice late emarginata, lobis triangulatis 

 acutis, extus sparsim serrata. Perianlhia Irrminalia ( innovationi nuliai 

 ex angusta basi latissime obcordata, inferne nuda, superne late alat;i. 

 alis longe decurrentibus, irregulariter denticulatis, sublaceratis, rostro 

 brevissimo. Folia floralia intima perianthio aequilonga, anguste oblonga, 

 triplo longiora quam lata, apiculata, superne regulariter serrata, lobuh 

 subduplo breviore, parum soluto, anguste lineari, integerrimo, obtuso. 

 Amphigastrium florak perianthio parum brevius, anguste-oblongum, 

 ad V 3 inciso-bilobatum, sinu angusto, lobis anguste triangulatis acutis, 

 in sinu levibus. ceterum regulariter s«'rratum. Andrwia in caule ses- 

 silia, bracteis paucijugis. 



Hab. America tropica. 



H. Prionolejeunea andina St. n. sp. 



Sterilis pusilla flaccida, pallide flavicans, foliicola. Caulis ad 15 mni. 

 longus, sparsim irregulariterque ramosus. Folia caulina parum imbri- 

 cata, oblique patula, plano-disticha, optime ovata (0,9 mm. longa, 

 0,5 mni. lata) longe apiculata, superne sparsim irregulariterque dentata, 

 brevi basi inserta, basi antica leviter rotundata, nuda. Cellulsr super.e 

 18 {i. trigonis subnullis, basales 27 trigonis majusruiis. Ij>i»dus paruis, 

 caulis diametro aaquilongus, subquadratus, carina oblique adscendens, 

 stricte in folium excurrens,apice quam basis parum angustiore, leviter 

 emarginato, acuto. Amphigastria < caulina inajuscula, caule triplo latiora, 

 parum longiora qiiam lata. lcvitcr sinuatim inserta, ad 2 /a exciso-biloba, 



Hab. Peruviu . 



h>. Prionolejeunea arguta (Nees) St. 



S>n. : Lejeunea urgnta Nees Syn. Hep., p. 338. 

 Sterilis gracilis, pallide flavicans, tlaccida, aliis hepaticis consoeiat.i. 

 Cauiix ad 6 cm. longus, irregulariter breviterque pinnatus. Folia cau- 

 204 



