Pgcuolejeunea. h;\.\z sri;i'ii.\.\i. sf-kciks iikiw jicaiu m < Vol. V, 1914). 



26. Pycnolejeunea densiuscula (S. ms) St. 



Dioica minor valida, brunnea, corticola. Caulis ad 2 cm. longus, 

 parum breviterque pinnatus. Folia caulina conferta, recte patula, con- 

 cava, in plano lat<> ovata. svmmelrica (1 mm. longa, medio 0,75 mm. 

 lata) apice rotundata, brevi basi inserta, basi antica late rotundata. 

 Celluhv superae 27 X 27 {x, basales 27 X36 ^ parietibus validis ; ocelli 5, 

 basi aggregati 36X54 Lobulus majusculus, folio triplo brevior, in 

 situ oblongus, in plano ovato-oblongus, oblique adscendens, carina 

 arcuata, amplo sinu in folium excurrens, apice quam basis duplo 

 angustiore, recte truncato, angulo apiculato. Amphigastria caulina 

 magna, caule quintuplo latiora, parum latiora, quam longa, transverse 

 inserta, apice ad l /s biloba, sinu subrecto obtuso, lobis obtusis. Perian- 

 thia uno latere innovata, ambitu oblongo-elliptica (1,17 mm. longa, 

 medio 0,62 mm. lata) apice truncato-rotundata, rostro validissimo 

 brevissimo, plicis posticis angustis, divrrgenti-decurrentibus ; Folia 

 floralia perianthio aequilonga, obovato-oblonga, apice late rotundata, 

 lobulus tertio brevior lanceolatus, truncatus, apiculatus. Amphigas- 

 trium florale ovato-ellipticum, lobulis parum longius, apice ad V 5 

 inciso-bilobatum, rima angusta, lobis acutis. Androecia desunt. 



Hab. Brasilia oriantalis. 



27. Pycnolejeunea Dussiana St. in Urban, Symb. Antili., 

 p. 278. 



Dioica mediocris gracilis flaccida, palide virens, corticola. Caulix ad 

 5 cm. longus, irregulariter pinnatus, pinnis brevibus, paucis longio- 

 ribus similiter pinnatis. Folia caulina conferta, subrecte patula, parum 

 concava, in plano late ovato-triangularia (1 ,25 mm. longa, basi 1,33 mm. 

 lata) asymmetrica, margine infero stricto, supero late arcuato, apice 

 obtusa, ad medium accreta, basi antica truncato-rotundata. Cellulse 

 superae 27 X 27 u., trigonis magnis in parietibus validis, basales 

 36x45 ji. trigonis magnis in parietibus tenuibus. Lobulus parvus, folio 

 quadruplo brevior, in situ obiongus, duplo longior quam latus, inplano 

 late ovatus, carina leviter arcuata, levi sinu in folium excurrens, papu- 

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

 acuto. Amphigastria caulina caule triplo latiora, subrotunda, sinuatim 

 inserta, ultra medium inciso-biloba, sinu recto, lobis ovatis acutis. 

 Flores feminei uno latere innovati. Folia floralia caulinis aequilonga, 

 obovato-oblonga, apice erosula, obtusa vel acuta, lobulus parum bre- 

 vior, lanceolatus obtusus, ad V 3 ve l niagis profunde solutus, apice 

 obtusus. Amphigastrium florale oblongo-ellipticum, foliis floralibus 

 613 



