310 STEGOCARPI. PLEUROCARPI. nypxum. 
vir homomallophyllis , tenuioribus kaud curvatis, parum 
intertextis; folia caulina dense conferta parum secunda, id 
regulariter et breviuscule latiuscule ovato- acuminata in- f 
legerrima profunde concava, margine basi paulisper re- 
flexo, nervis breviusculis viridibus, cellulis ellipticis viri- 
dissimis, alaribus permultis planis quadratis parvis vi- 
rescentibus granulosis; perich. externa reflexa minora, 
interna majora e basi latiuscule ovata laxius reticulata 
subpellucida longius acuminata erecta, crenulata; theca 
in ped. brevi purpurascente laevi stricto subvalido parum 
inclinata, oblonga, ore obliquo constricto inaequalis, oliva- 
cea, dein badia, exannulata; opere. cupulato obtuso mam- 
millato pallido; perist. d. ext. lutei, int. flavidi aequilongi 
laeves pertusi, ciliis aeguilongis albidis capillaribus sub- 
e rugulosis singulis. 
Hypnum Stereodon adnatus Brid. IL. p. 591. 
Patria. America septentrionalis, ad arborum corti- 
cem Pensylvaniae primus legit Mühlenberg; in repu- 
blica Massachussets: Torrey. Ad saxa, rarius in arbo- 
ribus haud infrequens legit Sullivant. Coll. No. 28. 
Species pulchella facile distinguenda. Flos masc. 
turgidus, folis late ovatis breviter et obtuse acuminatis. 
Ab H. polyantho, parum simili, notis cursive impressis | 
toto coelo differt. 
223. H. ambiguum Harvey (Ic. Pl. Rar. Hook. tab. 
24. f. 4; c. descr. Lond. Journ. of bot. 1840. 2. p. 20.); | 
monoicum ; caulis repens tenuis pallidus, ramis gracilli- 
mis flexuosis breviusculis inaequaliter pinnatus; folia di- -~ 
lute viridia laxiuscule conferta subsecunda parva, anguste 
ovato- acuminata caviuscula minute serrulata, margine 
erecto, nervis binis Jongiusculis, cellulis angustissime li- 
nearibus subconflatis virescentibus, alaribus vix ullis ; pe- 
rich. e basi latiuscule vaginante acuminata reflexa; acu- 
mine flexuoso tenui, subdenticulata, enervia; theca in 
ped. elongato rubro laevi horizontalis, minute sphaerica. 
Patria. Nepal: Wallich. 
Notis laudatis facile discernibile. 
