498 
vel virentes; caulis vage remosus, ramis brevibus rhyn- 
chostegioideis sed tenuibus ad Microthamnium spectanti- 
bus; folia coaretata humore planiuscula ramulum subap- 
planatum sistentia, e basi brevissima coarctata ovato-lan- 
ceolata in acumen latiusculum semitortum serrulatum pro- 
dueta, margine erecta, nervo tenui supra medium evanido, 
e cellulis linearibus densiusculis areolata; perich. vagina- 
cea longius acuminata erecta; theca in ped. pro plantula 
longiuseulo glabro tenui rubente inelinata, e collo bre- 
vissimo obconico-ovalis macrostoma medio pro more con- 
stricta, evacuata turgidiuscule urceolata brevis ochracea 
fuscata exannulata, opereulo e basi cupulata oblique 
rostellato minuto; perist. duplex normale, internum valde 
hians, eiliis singulis rudimentariis. Ex affinitate Hypni 
perspicui Hpe. Novo-Granatensis. Typus inter Miero- 
thamnium et Rhynchostegium medium tenens, a Cl. 
Hampe ad Hypna polymorpha reduetus. 
No. 151. Hypnum (Strigodium) nano-poly- 
morphum n. sp.; monoicum; cespites tenelli depressi fla- 
vescentes; caulis decumbens, ramis assurgentibus brevibus 
simplicibus vel parum divisis, filiformibus teneris sed ri- 
gidiusculis; folia eaulina subsquarroso-patula, e basi cor- 
data latiuscule ovata in acumen cuspidatulum acutum 
_ subdentieulatum produeta, margine angustissimo revoluta, 
nervo brevi tenuissimo, cellulis linearibus densiuseulis; 
perich. angustata longius acuminata magis squarrosa sub- 
enervia minuta; theca in ped. breviuseulo temui glabro 
rubente nutans minuta urceolato-ovalis, opereulo conico 
brevi, annulo parvulo; perist. duplex normale robustum, 
internum valde hians, ciliis binis longiuseulis nodosis. 
