Archilejeunea. FRANZ stephani. species hepaticarum (Vol.VI, 1924-) 



da, integerrima. Periantbia magna obovaio-oblonga (1,67 mm. 

 longa, sub apice 0,9 mm. lata) apice late truncato-rotundata, angulis 

 obtusis, plicis posticis angustis divergentibus, longe decurrentibus, 

 rostro valido breviusculo. Folia floralia perianthio duplo breviora, 

 obovato-oblonga, apice rotundata, asymmctrica, margine supero 

 longe arcuato, infero stricto, lobulus triplo brevior, oblongus, ad 

 medium solutus, obtusus. Amphigastrium ftorale foliis floralibus 

 parum brevius, obovato-obconicum apice rotundatum, integerri- 

 mum. Androecia in ramis terminalia, bracteis ad 7 jugis. 



Hab. Africa occidentalis : Camerun (Mildbraed legit). 



74. Arehilejeunea Wattsiana St. n. sp. 



Autoica et monoica, mediocris flavescens, flaccida, in cortice 

 dense depresso csespitans. Caulis ad 2 cm. longus, irregulariter 

 remoteque pinnatus. Folia caulina conferta, recte patula, parum 

 concava, in plano ovato-elliptica, symmetrica (2 mm. longa, ubique 

 1,5 mm. lata) apice late rotundata, brevissima basi inserta, basi 

 antica longe truncata, caulem vix tegentia, integerrima. Cellulx 

 superse 18xl8[x, basales 27x36[x trigonis magnis. Amphigastria 

 caulina late obconica, caule quintuplo latiora, transverse inserta, 

 apice late truncato-rotundata, integerrima. Perianthia utrinque 

 innovata, obovato-oblonga (3 mm. longa, 1,5 mm. lata) apice 

 truncato-rotundata, rostro parvo, plicis posticis angustis, longe 

 decurrentibus, divergentibus. Folia floralia perianthio parum 

 breviora, obovato-oblonga, acuta, superne regulariter minuteque 

 dentata, falcatim patula, lobulus tertio brevior, linearis, breviter 

 solutus, acutus. Amphigastrium florale lobulis sequilongum ligu- 

 latum, leviter obconicum, apice breviter emarginato-bidentatum 

 irregulariterque spinulosum. Androecia in ramulis parvis terminalia, 

 bracteis quadrijugis. 



Hab. Australia : Lord Howes Island (Watts legit). 



429. Ptychanthus, Nees.— cf. voi. iv, p. 739-754 



28. Ptychanthus boliviensis St. n. sp. 



Dioica, maxima, dilute brunnea, flaccida, in cortice laxe intricata, 

 pendula. Caulis ad 10 cm. longus, regulariter bipinnatus, ramis 

 primariis 3 cm. longis, remote breviterque pinnatis. Folia caulina 

 imbricata, oblique patula, decurva, in plano ovata (2,33 mm. longa, 



559 



