257 
angustato flavido aetate rubente in aristam elongatam 
flexuosam reflexam acutam integriusculam e cellulis in- 
erassatis compositam protracto exarata, apice cellulis parum 
prominentibus vix serrulata, e cellulis parvulis laxiusculis 
inanibus retieulata; theca in ped. breviusculo valde 
fiexuoso stramineo deinque rubente validiusculo apice ar- 
euato horizontalis majuscula, e collo brevi pyriformi-ela- 
vata sordide pallescens leptodermis flaccida aetate fusca- 
tula laevis, sub ore majusculo symmetrico parum con- 
strieta humore aequalis, operculo deplanato lenissime 
aurantiaca vel annulo rubro eircumducta, exannulata, 
calyptra glabra, peristomium simplex: dentes regulares 
lanceolato-subulati superne dieranoideo -divisi pulchre 
aurantiaci striati glabri. 
Patria. Argentinia subtropica, Jujui, ad muros et 
latera fossarum, 13. April. 1873. 
Ob eolorem sordide pallidum foliorum atque thecae 
robustae clavatae siccitate corrugatae et folia longe ari- 
stata statim distinguenda. 
Gen. Physeomitrium Brid. 
37. Physcomitrium serrifolium n. sp.; monoicum; humile 
simplex vel ramulos ex basi emittens, inferne nudiusculum 
radieulosum apicem versus gemmaceo-rosulaceo-foliosum ; 
folia rufescenti-pallida crispatula madore patulo-imbricata, 
e basi oblongata parum latius ovata brevissime acuminata 
profunde canaliculata vel eomplieato-concava hie illie 
undulata, margine basilari integerrimo revoluta supero 
cellulis prominentibus brevibus cornuformibus obtusis 
dense serrulata, nervo tenui flavido ante acumen dissoluto 
earinato percursa, e cellulis teneris diffieile emollientibus 
basi magnis longioribus apice densioribus ampliusculis 
44. Band, 3. Hoft. 17 
