280 
acuminata, integerrima, enervia; cellulis basilaribus subrectan- 
gulis, versus apicem folii dense aggregatis, angustatis, lineari- 
bus, diaphanis. Seta angulata crassa, omnino sinistrorsum torta, 
semiuncialis, erecta, flavescens. Theca ovato-elliptica, recta, hu- 
mida tenuiter octo-costata, sicca corrugato-plicata, cuprea, ore 
nigricante nitida; operculo conico-acuminato, recto, subtriplo 
thecæ breviore, rubro. 
Hab. Lagoa Santa, in silvis ad arbores m. Sept. leg. 
Warming. s 
55.  Pterigynandrum Brasiliense Hpe., n. sp. 
Monoicum, vage repens, lutescente viride, nitidum.  Caulis 
breviter ramosus, apice radicans; ramis julaceis dense foliatis, 
foliorum apicibus patentibus, amentaceis.  Folia caulina laxius 
imbricata, interdum squarrulosa, margine erecto, concava, e basi 
ate cordata, rotundato-ovata, acuminata, integerrima, enervia; 
cellulis alaribus (9—10) seriatis, subquadratis, pellucidis, se- 
quentibus anguste rhombeis, versus apicem folii sensim angu- 
stioribus, demum abbreviato-linearibus, flavescente diaphana; ra- 
morum angustiora, dense imbricata, acumine parce denticulato, 
patentia; cellulis alaribus magis granulato-quadratis, pellucidis, 
superioribus anguste rhombeis, elongatis, lucide diaphana; peri- 
chætialia exteriora breviora, cordata, acuminata, apice reflexa, in- 
teriora longissima, late ovato-lanceolata, longe acuminata, inte- 
gerrima, vaginante - erecta ; cellulis basilaribus subrectangulis, 
laxis, hyalinis, in superiore parte folii aggregatis, linearibus, 
subconflatis, lutescente diaphana; perigonialia erecta, exteriora 
rotundato-ovata, interiora angustiora longius acuminata, rhombeo- 
reticulata, pellucida.  Seta uncialis erecta, flavescens, senistror- 
sum forta, sulcata, apice parce incrassata. Theca elliptico-cylin- 
drica, leptøderma, pallide cuprea, nitida, evacuata pallida, ore 
aperto, cingulo rubro ornata; operculo nitido convexo-conico, 
acuminato, paulo curvato, pallidiore.  Peristomium duplex, pa- 
riete thecæ interno adfixum, dentibus basi immersa sulcatis, au— 
