E , ynB 
plerumque simplices, exactissime monospiri. — Neu-Holland, 
An feuchten Stellen um Sidney; leg Jelinek, 
Marchantiaceae, 
Marchantia hexaptera Rehdt. (ÜOhlamidium.) Frons 
Imearis, 1/.—2’' lata, tenuis, costa angusta, subtus pur- 
purascente percursa; pedunculi unciales, pilis hinc inde vestiti, 
ad insertionem receptaculorum barba pendula praediti. Re- 
ceptacula mascula et feminea dimidiata, palmato-radiata; radii 
sex, discreti, late cuneiformes, membranacei, omnes profunde 
emarginati; discus papillatus, ex angulis subtus barbatus. 
Involuera margine laciniato-dentata, perianthia quadriloba, 
calyptrae subbitidae; sporae fuscae, ! as magnae, tetraädrae, 
granulatae; elateres monospiri. — Tahiti. In Urwäldern um 
Fataua auf feuchter Erde; leg. Jelinek. 
Sungermannicae 
. Lejeunia paritiicola Rechdt. Caules graciles, repentes, 
3-4, longi, caespites extensos, fuscescentes formantes, sub- 
pinnatim ramosi. Folia Ba an obtusa, integerrima 
vel repandula, convexiuscula, basi subsinuato-complicata; plica 
sarcata, oblique semiorbicularis, folio multo minor. Ampbi- 
astria foliis vix minora, rotunda, convexa, apice bidentata, 
Merten brevibus, obtusiusceulis. Fructus in ramulis brevissi- 
mis laterale; foliorum involucralium par superum oblongum, 
lobulo oblongo, folio triplo minori; amphigastrium illis caulis 
conforme. Perianthia obovato-clavata, sursum acute quinquan- 
gularia. Capsulae sporae, elateresque desiderantur. 
Tahiti. Auf faulenden Stämmen von Paritium tiliaceum 
Adr. Juss. in den Umgebungen von Papiete grosse, aus- 
gedehnte Rasen bildend; leg. Jelinek. 
Thysonanthus Frauenfeld Rehdt. Caulis pimarius re- 
pens; rami erecti, dichotomi pinnative subtus nıudi. Folia 
subhorizontalia, plana, ovato-oblonga, acuminata, integerrima 
vel apicem versus repandula, medio cellulis elongatis vittata; 
lobulus plicaeformis folio multo minor, oblongus, planiusculus,. 
Ampbhigastria subimbricata, foliis triplo minora, clavato ro- 
tundata, integerrima, apice patulo reflexo-emarginata. Fructus 
terminales et in dichotomia; folia involucralia oblonga, acuta, 
margine repando, lobulo discreto, oblongo, acuto; amphi- 
gastrium involucrale magnum, obovatum, margine Be ce 
Perianthium clavato-cylindriecum, triquetrum, angulis inte- 
gerrimis, apice dentatum. Capsulae maturae, sporae, ela- 
teresque desunt. — Tahiti. An Baumstämmen um Papiete; 
leg. Selkker. 
Mastigodryum Hochstetter! Rchdt. Caulis decumbens, 
repetitodichotomus, flagellifer. Folia approximata, laxe im- 
