Jamnesoniella. FRANZ STEPHANI. SPECIES. HEPATICARUM. 1024 
^S. hamata. St. n. sp. 
Parva, fulva, gregarie crescens, humilis. Caulis ad 10 mm. longus, 
simplex vel pauciramosus, subteres, validus, radicellis, longis fuscidulis 
fasciculatis repens, superne procumbens. Folia caulina late ovato-falcata, 
ubique :quimagna, apice obtusa, interdum erosa vel acuta, integerrima. 
Cellulze foliorum subapicales 12 »& 27 y, parietibus maxime incrassatis, 
lumine earum itaque optime rotundato, median: 12 7X 36 y. parietibus 
minus validis, basales 18 »X 45 y, tenere. Paraphylla foliiformia, late 
lanceolata vel spathulata, varie incisa, multo minus conferta minusque 
numerosa quam in Sf. paraphyllina, foliisque haud insidentia. Flores 
feminei ut supra descripti. 
Hab. Argentina (Lorentz), Brasilia subtropica (Puiggari ?) 
JAMESONIELLA Spruce 1876. 
Plante foliifere, majores vel spectabiles, terricola&e, rarius muscicol:e 
vel corticolc, sepe rigida et fragiles, profunde czspitose vel intricatim 
procumbentes, virides, sape flavo-rufescentes vel sanguines. Caulis e 
caudice subterraneo ortus, apice incurvus, subteres, validus, setate fuscus, 
in paucis paraphylliferus, radicellis pallidis repens, superne vulgo arhizus 
el procumbens vel erectus, hic illic e basi foliorum postica fasciculatim 
radiculosus, sub flore innovatus, ramis lateralibus rarioribus, vulgo 
posticis parvifoliis parum numerosis; stolones in medio infero caulis 
postici. Folia caulina alterna, succuba, integerrima, ovata vel subrotunda, 
superiora erecto-connivenlia, concava, adulta plus minus explanata, 
oblique- in paucis prarupte- inserta et fere semiamplexicaulia. Cellule 
irigonis majusculis vel maximis incrassate, medio basis semper elongatz, 
cubicula lavis, in paucis verrucosa. Amphig. caulina nulla. Inflorescentia 
dioica. Folia floralia paucijuga, caulinis vix majora, vulgo utrinque 
armata, intima multo minora, occulta, varie, sepe maxime profundeque 
lacerata. Amphig. floralia magna, libera vel coalita similiterque lacerata, 
Perianthia fertilia longe exserta, obovato- oblonga, medio supero pro- 
funde pluriplicata, ore amplo breviter, lobulato integro vel crebre armato. 
Capsula (in paucis tantum cognita) ovalis, in pedicello longiusculo, ad 
basin usque quadrivalvis, valvulis bistratis interne semiannulatim 
ncrassatis. Sporz parva, asperz. Elateres breves, laxe bispiri (haud rare 
elateres persistentes in fundo capsule magni 3-4 spiri inveniuntur). 
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