“2 HEDWIGIA 18%. 
Notizblatt für kryptogamische Studien, 
nebst Repertorium für kryptog. Literatur. 
Dresden, Monat Februar. 
Inhalt: Dr. Venturi, über Orthotrichum. (Fortsetzung) — J* 
Juratzka, Bryologische Notizen — Repertorium: (0. A. J.A. 
Oudemans, Sur une espece speciale de Tubes existant ete, — 
Gesellschaft naturforschender Freunde zu Berlin. — Eingegangene 
neue Literatur. — Preis- Ausschreibung. 
Ueber Orthotrichum. Von Dr. Venturi. 
(Fortsetzung. 
b) Dentes externi 8 aut 16, siceitate reflexi vel revoluti 
minute et dense papillosi. 
l. Folia apice sine appendice diaphana, et mar- 
gine revoluto, vel recurvo, vel reflexo. 
u. Stomata periphrasta. 
1. Dentes externi 8 reflexi et ad capsulae parietem ad- 
pressi. 
9. Orthotrichum rivulare Turn. Caespitoso-pulvinatum, 
rocumbens vel pendulum, haud raro fluitans, ex majoribus 
Dans sectionis; caespites superne fasciculato-ramosi, inferne 
denudati. Folia inferiora remota, ovato-lanceolata, superiora 
conferta elongato-ligulata, obtusa, margine reflexa vel revo- 
lata, obscure vel sordide viridia, dense reticulata monostro- 
matica, folia juvenilia papillis parvulis obsita, adultiora 
laevia. Inflorescentia monoica; calyptra campanulata pallide 
vel lurido-virens, apicem versus fusca, omnino nuda. Cap- 
‚sula emergens e collo sporangio breviore et in pedicellum 
breve cito defluens, ovata, crassiuscula, lutescens, stomata 
En striae 8 in capsulis sub peristomio ex 4—5 cel- 
lis compositae; capsula sicca sub ore coarctata, et vacua 
tota longitudine sulcata. Peristomii interni dentes 8 bige- 
minati in linea divisurali rimosi, aurantii, subtiliter papillosi, 
siceitate reflexi, cilia perist. interni crassa 8, interdum cum 
8 minoribus alternantia. Ex Anglia et Germania. 
10. Orth. Sprucei Montagne. Caespites humiliores, 
irregulares sordide virides, humiditate molles. Folia patula, 
flaccida, inferiora vix ultra medium costata, margine plana, 
superiora sensim majora, longius costata, ligulata, vel in 
apiculum producta, margine reflexa vel revoluta; perichae- 
tialia longiora, angustiora, tenuius costata, areolatıo laxior 
