500 Mascologia Itineris Assamici. 



Caulis primarius terra sepultus, brevis simplex, foliis rigidis 



atroviridibus undique patentissimis, summis patenti-ascenden- 



tibus obsitus, apice prolifer. Caulis novellus fructifer conformis 



lineas tres vix excedens. 

 Folia siccatione adpressa, humore patenti-ascendentia, integra, 



acuminibus flexuosis, apice denticulato-scabris, subdiaphanis. 

 F. Perichaetialia basi ampliata, membranacea concava, longius a- 



cuminata, et quasi aristata, arista subdiaphana apicem versus 



scabra. 

 Setae aggregatae, 1-3 saepius 2, pallidas vix semunciales, siccae 



fere semper geniculatim deflexae, calyptoe apice nempe 



foliis perichaetialibus ope filamentorum confervoideorum 



firme adhaerente, demum eruptae erectae flexuosae, humore 



decurvae.* 

 Vaginula cylindracea, angusta. Pistilla pauca, stylis longis 



Paraphyses subnullae. 

 Capsula siccitate erecta, inclinata, subaequalis, dorso nempe 



convexior, lutescens ore rubro, humore laevis, annulata. Mem- 



brana interna discreta. 

 Sporula immersa hyalina, globosa, laevia, in acervulo sordide 



ochroleuca. 

 Peristomii dentes 16, ad medium vix bipartiti, pulchre rubri, 



laciniis albidis. 

 Operculum fere prioris, cum calyptrae apice arete cohserens sem- 



perque hoc pileatum. 

 Calyptra profunde dimidiata, basi villis hyalinis pulchre fimbriata, 



apice semper lacera. 

 Prsecedenti proximum, sed ob foliorum directionem, setas aggre- 



gatas, capsulam sub-obliquam que operculum cum calyptra 



cohaerens sat distinctum. 

 A D. introflexo distinguitur praesertim fohorum apicibus nun- 



quam hyahnis. 



* Note. — Although the Setee are aggregate, yet in this as well as in D. eri- 

 coides no more than the usual number of pistilla can be said to be fecun- 

 dated, as from each seta being surrounded by a perichaetium, it is obvious 

 that each belongs to a distinct female flower. The case is different in 

 some other instances of aggregation of setae, in which, as in some Brya, 

 it arises from the development of more than one pistillum of one flower. 



