(VOL. V, 1914). franz stephaki. species hepaticarum Pycnolejeunea. 



24. Pycnolejeunea adnata (L. et L.) St. 



Syn. : Jungermannia adnata L. et Ldbg. Pug. 6, 1834, p. 46. 

 Lejeunea adnata Kunze. Syn. Hep., 1844, p. 370. 

 Lejeunea confluens. Ldbg. Syn. Hep., 1844, p. 365. 



Sterilis mediocris pallide flavo-rufescens, in cortice dense casspitans. 

 Caulis ad 3 cm. longus, irregulariter multiramosus. Folia caulina 

 conferta, parum concava, in plano late ovata, subsymmetrica (1,17 mm. 

 longa, medio 83 mm. lata) apice late rotundata, ad medium accreta, 

 basi antica truncata. Cellulse supera; 18X18 u basales 27X36|x, tri- 

 gonis parvis, parietibus validis. Lobulus majuscuius, folio quadruplo 

 brevior, in situ ovato-oblongus, ex parte occultus, in plano ovatus, 

 carina obJique adscendens, leviter arcuata, amplo siuu in folium 

 excurrens, apice quam basis duplo angustiore, oblique truncato, angulo 

 spina longa hamata armato, sub apice leviter constrictus. Amphigastria 

 caulina majuscula, caule quadruplo latiora, subrotunda, transverse 

 inserta, basi obcuneata, apice ad V 3 inciso-biloba, sinu semirecto, 

 lobis acutis vel obtusis. Reliquat desunt. 



Hab. Insula Cuba. 



25. Pycnolejeunea discoidea (L. et L.) St. 



Syn. : Lejeunea discoidea L. et L. Syn. Hep., p. 383. 



Monoica pusilla, pallide flavo-virens foliicola. Caulis ad 2 cm. longus, 

 remote breviterque pinnulatus. Folia caulina imbricata, recte patula, 

 valde concava, in plano ovato-triangulata (0,91 mm. longa, basi 

 0,83 mm. lata) asymmetrica, margine supero valde arcuato, infero 

 substricto, apice obtusa, brevi basi inserta, basi antica longe truncata. 

 Cellulse supera 18X18jl trigonis parvis, basales 18X27 ;x trigonis 

 nuilis. Lobulus majusculus, folio triplo brevior, in situ oblongus, duplo 

 longior quam latus, oblique adscendens, carina leviter arcuata, recto 

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

 truncato, angulo apiculato, in plano parum latior, simillimus. Amphi- 

 gastria caulina majuscula, caule triplo latiora, subrotunda, transverse 

 inserta, apice ad X J* inciso biloba, sinu recto, lobis acutis. Perianthia 

 uno latere innovata, pyriformia (1 mm. longa, medio 0,6 mm. lata) 

 apice rotundata, rostro longo, plicis posticis angustis, ultra medium 

 decurrentibus. Folia floralia perianthio parum breviora, obovato- 

 oblonga, obtusa. Lobulus parum brevior, anguste Iinearis, breviter 

 solutus, obtusns. AmphiguHtrium florale foliis floralibus aBquilongum, 

 obovato-oblongum, apice breviter inciso-bilobatum, rima angusta, 

 lobis acutis. Androzcia sessilia, bracteis 4-6 jugis. 



Hab. Insula St-Vincent. 612 



