in ud 
128 Carol. Müller. 
filiformis longe stoloniformi-repens, ramis brevibus teneris attenuatis 
curvulis irregulariter pinnatim dispositis; folia caulina minuta patula 
distantia in axi crassiusculo, e basi oblonga in laminam acuminatam 
brevem attenuata, margine erecto serrulata, plerumque inaequaliter 
concava veluti destructa, nervo tenuissimo fere obsoleto vix 
exarata, e cellulis minutis diaphanis reticulata; perichaetialia majora 
latiora multo tenuius membranacea laxe reticulata flaccida, nervo 
obsoletissimo vel nullo instructa; theca in pedunculo brevi brunneo 
glabro inclinata pro plantula majuscula obovata cernua vel magis 
inflata submembranacea exannulata, operculo brevi conico acutius- 
culo; dentes exostomii angusti longiuscule subulati rufi dense tra- 
beculati, endostomii externis aequilongi lutei plus minus secedentes, 
eiliis rudimentariis. 
Habitatio: Argentinia subtropica prope Tucumän, Aprili 1872: 
Br:@, Borentz 18, 
Ex habitu Brachythecio Starckii simile, sed species propria 
elegantissima tenera. 
116. Brachythecium tenui-prostratum n. sp.; dioicum; 
cespites planissimi sordide virides vagantes; caulis prostratus tenuis, 
ramis brevibus curvulis attenuatis irregulariter pinnatulus; folia caulina 
patula majuscula, e basi latiore ovata in laminam longe acuminatam 
cuspidatam attenuata, caviuscula sed plus minus flaccida et irregularia, 
margine plano serrulata, tenuiter membranacea pellucidissima, nervo 
pertenui vel obsoleto evanido vix exarata, e cellulis laxis basi majori- 
bus reticulata; perichaetialia e basi vaginata longe cuspidata sub- 
enervia; theca in pedunculo brevi glabro rubro subinclinata cylin- 
draceo-oblonga plus minus curvula, operculo brevi conico acuto; 
peristomii dentes externi robustiuscule trabeculati, interni lutei aequi- 
longi valde secedentes, ciliis vix rudimentariis. 
Habitatio: Argentinia subtropica Tucumanensis, in cortice ar- 
borum Sierrae de Tucumän: P. G. Lorentz Ig. Aprili 1872. 
Brachythecio filirameo simile, sed partibus omnibus ro- 
bustius, foliis laxe reticulatis thecaque cylindracea primo visu 
recedens. 
117. Brachythecium minusculifolium n.sp.; dioicum; ces- 
pites procumbentes sordide virides tenues; caulis vagans fasciculatim 
ramosus, ramis tenuissimis curvulis,; folia caulina minuta setoso- 
imbricata madore patula, e basi angustiore rotundato - ovata in 
laminam brevem acutatam minutissime denticulatam attenuata, pro- 
fundius concava, margine infero parum revoluta, nervo tenuissimo 
supra medium evanido leviter exarata, e cellulis minutis subvirenti- 
bus densis areolata; perichaetialia ut caulina in axi crassiusculo 
multo majora, e basi vaginaceo -convoluta latiuscula enervi in 
