268 
ramosus. Folia arete imbricata, humida vix soluta, subpungentia, 
oblongo-lanceolata, margine parce revoluta, apice dentieulata; nervo 
crasso luteseente apiculata; cellulis basilaribus crasse marginatis 
subhexagonis luteo-diaphanis. Seta uneialis flavescente rubra, apice 
curvata, inclinata.  Theca parva sublongicollis pyriformis, nutans, 
intense brunnaseens, opaea, opereulo convexo apieulato sanguineo 
nitente; peristomium speetabile, dentibus exter. late lanceolatis 
subulato-acuminatis, modice trabeculatis, linea media notatis; mem- 
brana interna pallida, eruribus carinatis brevioribus, sealariformiter 
pertusis, ciliis binis subulatis subzequantibus interjeetis. — Nr. 8516. 
Bryo erythrocarpo Schwegr. maxime affine, sed rigidius sub- 
pungens, foliis magis adpressis, peristomio et sexu diversum. 
57. Mmium rostratum Schwegr. — Nr. 7365. 
f, americanum. — Nr. 9090. 
58.  Catharinea (Oligotrichum) Riedeliana Hype. — Nr. 7489. 
59.  Polytrichum involutum n. sp. 
Bi-triunciale, laxe ezsspitosum, basi nudiusculum, parce albido- 
fibrillosum; caulis patenti-foliosus, humore immutatus; folia e basi 
longe vaginante cuneata, cellulis inferioribus elongatis, superioribus 
rectangulis, diaphanis retieulata; lamina paulo longior lanceolata, 
dorso carinata, glabriuscula, margine arete inflexo, limbo mem- 
branaceo hyalino, cellulis rotundatis transverse reticulato, remote 
serrato-dentato, acumine attenuato-aristata, parce spinuloso-dentata ; 
nervo basi simplici, cellulis rectangulis formato, subdiaphano in 
lamina opaca lamelloso; fructus deficit. — Ad fontes fluvii Rio 
Preto; nr. 9074. 
Cum Polytricho Antillarum ex habitu comparandum, sed foliis 
erecto-patentibus immutatis, nec humidis reflexis, dorso carinatis 
glabris, margine arcte inflexis complanatis, aqua imbutis, limbo 
membranaeeo remote serrato-dentato diversum. 
60.  Harrisonia. (Hedwigidium) glyphocarpa n. sp. 
Caulis adscendens biuncialis julaceus, plus minusve ramosus, 
inferne fuscus, superne lutescens, dense foliatus. Folia undique 
