447 
Hypno Sellowii Austro-Brasiliensi simile, sed haecce 
species reticulatione folii multo laxiore jam diversa.. — 
Flores maseuli parcissimi fugaces. 
193. Hypnum (Rhynchostegium) pinnicaule n. sp.; 
monoicum; cespites lati deplanati tenues albescenti-virides 
laxissini; surculus longe prostratus, ramulis brevibus 
teneris flexuosis gemmula minutissima exserta coronatis 
remotis laxifoliis complanatis pinnatulus flaceidus; folia 
caulina tenuiter membranacea sicca et madefacta paten- 
tissima remotiuscula horrida, e basi impressione angustiore 
revoluta late ovata, in acumen elongatum latiuseulum deni- 
que attenuatum semitortum interdum undulatum protracta, 
apice serrulate inferne obsolete dentieulata, nervo mediano 
tenui angusto dissoluto carinato exarata, e cellulis elongatis 
angustis leniter chlorophyllosis vel pellueidioribus basi 
fibroso-longiusculis laxioribus retieulata, inaequaliter eon- 
cava planiuseula vel plicatula; perichaetia paueissima, 
foliis minoribus e basi vaginata enervi laxe retieulata 
acutato-acuminatis superne denticulatis; theca in ped. 
medioeri rubente obliquiuseula parvula, e gibboso ovalis, 
operculo oblique rostrato. Caetera ignota. 
Patria. Argentinia Cordobensis, ad rupes umbrosas 
sylvae prope der Calera über dem Wasserfalle, cum 
Eihynchostegio pampae mixtum, fructibus immaturis paueis- 
simis, Majo 1870. 
Hypno homaliocaulo ob surculos ramulosque eompla- 
natos aliquantulum simile, sed caule pinnato, foliis longe 
acuminatis tenuiter membranaceis jam recedens. Hypnum 
glaucovirescens surculo vage ramoso secundifolio, foliis im- 
brieatis remote erenulato-denticulatis nec serrulatis optime 
