(VOL. V,i914). FRANZ STEPHANI. SPECIES HEPATICARUM Rectolejeunea . 



trigonis majusculis, parietibus validis. Lobulus majusculus, folio qiia- 

 druplo brevior, in «i^w oblongus, in plano ovatus, carina leviterarcuata, 

 levi sinu m foliiim excurrens, apice quam basis triplo angnstiore, 

 oblique emarginato, angulo apiculato. Amphiyaslna caulina magna, 

 caule quadruplo latiora, transverse inserta, subrotunda, ad medium 

 biloba, slnn angusto obtuso, lobis acutis. Perianthia uno iatere inno- 

 vata, pyriformia (1 mm. longa, medio 0,75 min. lata) apice i"otundata, 

 rostro valido, pllcis posticis angustis, divergenli-decurrentibus. Folia 

 floralia perianthio parum breviora, obovato-oblonga, apice rotundata, 

 lobulus duplo vel tertio brevior, lanceolatus, parum solutus, obtusus 

 vel acutus. Amphigastrium florale periantbio duplo brevior, obovato- 

 obconicum, ad ^jz inciso-bifidum, sinu semirecto acuto, lobis triangu- 

 latis acutis. Andrcecia ignota. 

 Hab. Mexico. Coslarica. 



24. Rectolejeunea myriantha (A. et M.) St. 

 Syn. : Lejeunea mijriantha N. et M. Syn. Hep., p. 365. 



Monoica, exigua, brunnea, in cortice dense caespitans. Caulis ad 8 mm. 

 longus, parum longeque ramosus. Folia caulina conferta, subrecte 

 patula, valde concava apiceque decurva, in plano subrotunda (0,4 mm. 

 longa et lata) brevi basi inserta, basi antica truncato-rotundata. Cellulse' 

 supera) 18Xi8|j., basales 18x27 [x, parietibus validis. Lobiilus magnus, 

 folio duplo brevior, oblique adscendens, oblongus, duplo longlorquam 

 latus, carina leviter arcuata, levi sinu in folium excurrens, apice quam 

 basls parum angustiore, in piano emarginato, angulo acuto, in situ 

 occulto. Amphigustria caulina majuscula, caule plus duplo latiora, sub- 

 rotunda, transverse inserta, ad medium inciso-biloba, sinu recto, lobis 

 ovatis acutis. Perianthia geminatim innovata, juvenilia subglobosa, 

 adulta late pyriformia, apice late rotundata, rostro nnllo, plicis posticis 

 angustis, late divergentibus longeque decurrentibus, plica antica obso- 

 leta, humillima. Folia floralia perianthio parum bi'eviora, obovata, 

 obtusa, lobulo triplo breviore, oblongo, haud soluto, obtuso, altero 

 multo majore,IateIineari, breviter solutoacuto. Amphigaslrium florale 

 perianthio parum brevius, obovato-oblongum, apice breviter exciso- 

 bidentulum, dentibus conniventibus. Andrcecia sessilia, bracteis tri- 

 jugis, ex apice vegetaliva. 



Ilab. Guiana. 



25. Rectolejeunea nanodes (Spruce) St. 



Syn. : Cheilolejeunea nanodes S. Hep. Am. And., p. 258. 

 Ihoica pusilla, hisco-brunnea in sicco subnigra, corticola. Caulisad 



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