Pycnolejeunea. franz stephani. species iiepaticarum (Vol. V, 1914). 



34. Pycnolejeunea cookiensis St. n. sp. 



Sterilis, luajor, flavesceiis, tlaccida, aliis liepaticis consociata. CauliH 

 ad 5 cm. lougus, sparsini longeque ramosus, raniis stepe simplicibus, 

 aliis sparsim pinuulatis. FoUa caulina paruin imbricata, recte patula 

 valde concava, in plano subrotuuda (,0,81 mm. longa, medio 0,87 mm. 

 lata) apice rotundata, brevi basi iuserta, basi antica truncato-rotundata. 

 Cellulae ISX 18 jx, trigonis magnis, basales 18X27 ji parietibus vali- 

 dis. Lobulus majusculus, parum inflatus, folio triplo brevior, ovato- 

 triangulatus, carina oblique adsceudens, substricta, levi sinu in folium 

 excurrens, apice quam basis triplo angustiore, oblique emarginato, 

 angulo spina valida stricta armato, margiue siipero stricto. Amphigas- 

 tria caulina maxima, late reniformia {i mm. lata, 0,67 mm. louga) 

 transverse inserta, apice breviter emarginato-bidentata, dentibus acutis. 



Hab. Cook Mand (Oceania pacifica). 



35. Pycnolejeunea corticola St. n. sp. 



Sterilis mediocris gracilis, pallide flavo-vireus, flaccida, in cortice 

 dense depresso-csespitans. Caulis ad 5 cm. longus, irregulariter remo- 

 teque pinnatus, hic illic bipinnatus. Folia caulina conferta, recte patula, 

 valde concava, in plauo ovato-triangulata leviterque falcata (1,17 mm. 

 longa, medio 1 mm. lata) asymmetrica, margine supero semicirculari, 

 infero stricto vel leviter siuuato, apice obtusa, brevissima basi inserta, 

 I)asi antica longe truucata. Cellulse superse 27X27 a, basales 27X36 [i, 

 parietibus validis ; oceUi vix majores, irregulariter distributi. Lobulus 

 parvus, recte patens, iu sifu subquadratus, carina stricta, recto angulo 

 in folium excurrens, apice truncatus, margine supero occulto, in plano 

 late ovatus, apice excisus, angulo spina valida hamata armato. Amphi- 

 gastria caulina majuscula, caule quintuplo latiora, transverse inserta, 

 basi utrinque rotundata, superne late acuminata, ad ^3 inciso-biloba, 

 sinu angusto. lobis late triangulati?, porrectis acutis. 



Hab. Insula Luwn. 



36. Pycnolejeunea decurvifolia St. Hedwigia 1896, p. 101. 

 Dioica pallida vel flavescens, mediocris, flaccida, in cortice caespitans. 



Caulis ad 4 cm. longus, irregulaiiter multiramosus. Folia caulina con- 

 ferta, recte patula, concava apiceque arcte decurva, iu plano ovata 

 (1,58 mm. longa, medio 1,17 mm. lata) asymmetrica, margine supero 

 late arcuato, infero stricto, apice truncato-rotundata, brevi basi inserta, 

 basi antica longe truncata. Cellulx superae 27 X27 ^, basales 27 X^^S jji 

 trigonis nuUis. Lobulus exiguus, folio sextuplo brevior, in situ rectan- 

 gulatus, parum longior quam latus, carina stricta, recte patula, sinu 



617 



