f 
HYPNOIDEAE. HYPNUM. p 253 
collo longiusculo subclavate ovalis , fuscescens leptodermis, 
operc. conico; perist. albidi d. ext. angusti articulato- 
trabeculati, int. perforati , in membrana brevissima positi, 
cilis rudimentariis binis. 
Platyhypnum piliferum Schimp. in litt, — H. trichophorum 
Spruce in Musc, Pyr. No. 25. Ann. and Mag. of Nat. Hist. 1849. — 
H. orthocarpon Angstr, Disp. Musc. Scand. 1842; nomen Hornschu- 
chiano junius. — Hypnum denticulatum var. Donianum Hook. i 
Drumm. Musc. Amer. No. 165. — Leskea pilifera Sw. Hb. Spo 
in Lond. Journ. of bot. 1846. p. 418. 
Patria. Norvegia, Suecia, Lapponia et Finlandia, 
ubi haud raro viget; in Pyrenaeis: Spruce; in America 
sept., ubi in rupib. ad Portage River legit Drummond. 
Species pulchella distinctissima. 
67. H. orthocarpum Hsch. (Regensb. bot. Zeit. III. 
p. 920; s. diagnosi); dioicum ; dense cespitosum erectum 
saepius breviter dichotomum anguste. compressum fragile, 
haud splendens, laxifolium molle, apice subcuspidato gem- 
maceo-clausog folia pallide viridia. sicca et madefacta 
erecto-appressa, e basi angustiore symmetricd cochleari- 
formi-ovata et concava, obtusa brevissime acuminata, 
margine convexo subintegerrimo, nervis longiusculis sub- 
latis aequalibus basi conflatis, cellulis longis laxis molli- 
bus pellucidis pallide virentibus, alaribus laxis elongate 
quadratis decurrentibus; perich. convolutaceo = vaginantia 
distinetius acuminata tenuiora; theca in ped. elongato 
recto purpurascente laevi valido molli elongate cylindrica 
angusta erecta v. vix inclinata, ore coarctata, fuscescens 
leptodermis; perist. d. ext. H. denticulati, int. albidi. 
Isothecium orthocarpum Brid. IL. p. 387, nomine solo memo- 
ratum, 
Patria. Chile, ad Talcahuano: Adalbert de Cha- 
misso 1816. 
Fructum imperfectum tantum vidimus. Species inter 
congeneres notis laudatis distinctissima pulchra, H. den- 
ticulato haud dissimile. 
68. M. subcompressum C. Müll; dioicum; longe 
prostratum vage ramosum, ramis elongatis flaccidis fle- 
