280 
acuminata, integerrima, enervia; cel lulis basilaribus subrectan- 
gulis, versus apicem folii dense aggregatis, angustatis, lineari- 
bus, diaphanis. Seta angulata crassa, omnino sinislrorsum 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. 
55. Pterigynandrum Prasiliense 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 abbrevialo-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 retlexa, 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 torta, sulcata, apice parce incrassata. Theca elliptico—cylin- 
drica, leptoderma, pallide cuprea, nitida, evacuata pallida, ore 
aperto, cingulo rubro ornala; operculo nitido convexo-conico, 
acuminato, paulo curvato, pallidiore. Peristomium duplex, pa- 
riete thecæ interno adfixum, denlibus basi immersa sulcatis, au- 
