280 
acuminata, integerrima, enervia; cellulis basilaribus subrectan- 
gulis, versus apicem folii dense aggregatis, angustalis, 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 
thecae breviore, rubro. 
Hab. Lagoa Santa, in silvis ad arbores m. Sept. leg. 
Warming. 
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- 
chetialia exteriora breviora, cordata, acuminata, apice reflexa, in- 
terjora longissima, late ovato-lanceolata, longe acuminata, inle- 
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 ornata; operculo nitido convexo-conico, 
acuminato, paulo curvato, pallidiore. —Peristomium duplex, p^ 
riete thecae interno adfixum, dentibus basi immersa sulcatis, aü- 
