Thysananthm. frakz steph.vm. species hepaticarum (Vol. IV, 
26. Thysananthus lacralus Sl. n. sp. 
27. Tliysananlhns lancolatos Si. 
28. ThysHnanlhus L;iuterbachii Sl. ii. sp. 
21^ Thysanaullius inoUis St. ii. sp. 
30. Thysananthns ovislipulus St. ii. sp. 
31. Thysaaaalhus sikkimensis St. n. sp. 
32. Tnysananthus spalhulislipus Ldbg. 
1. Thysaaanthus monoicus St. n. sp. 
Monoica, magna flaccida, flavicans, corticola. Caulis ad 10 cm. !ou- 
gus, irregulariter niultiramosus, ramis primariis ad 3 cm. longis,saepe 
simplicibus, aliis paucipinnulatis. Folia caulina conferta, subrecte 
patula, valde concava, raargine postico longe arcteque incurvo, in piano 
ovata (1,33 mm. longa, 0,93 mm. lata) acuta, sub apice denticulata, ad 
medium accreta, basi antica rotundata. Cellulfe superae 12 X 18 «i 
validae, trigonis magnis, basales 18x 36 [i. trigonis magnis acutis saepe 
trabeculatira elongatis. Lobnlm in situ occultus, in piano oblougus, 
folio quadruplo brevior, subtriplo longior quam latus, apice truncato- 
eniarginatus, angulo acuto, altero dente subapicali appro\imato. Amphi- 
gastria caulina magna, caule quintuplo latiora, obcuneata, transverse 
iuserta, apice truncata, irregulariter denticulata. Perianthia pyriformia, 
raarginibus fere ad basin usque grosse spinosis, rostro parvo. Fotia 
ftomlia intima caulinis duplo longiora, ovato-oblonga, acuta, sub apice 
yalide dentata, lobulo subduplo breviore, late ligulato vel subquadrato, 
profunde soluto, irregulariter grosseque dentato. Amphigastrium fimaie 
intimum foliis floralibus aequimagnum, obovato-obcuneatum, apice 
eniarginatura, irregulariter dentatum. Andracia pana, in caule ranits- 
q le raediana, interdum periantbio approximata autoica. 
Hab. Madagascar. 
2. Thysananthus triquetrus Mitt. Linn. Soc. 1864. 
Caule dichotomo vel subpinnato, foliis ovatis apice angulo subrecto 
acutis dentatis, margine dorsali subrecto, ventrali incurvo arcnato, 
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