DICRANUM. 421 



acuminata, et quasi aristata, arista subdiaphana apioem ver- 

 sus scabra. 



Setae aggregated, 1-3 scepius 2, pallidae vix semunciales, sicca; 

 fere semper geniculatim deflexse, calyptree apice nempe 

 foliis perichaetialibus ope filamentorum confervoideorum firme 

 adhaerente, demurn eruptae erecta3 flexuosae, humore de- 

 curyae.* 



Vaginula cylindracea, angusta. Pistilla pauca, stylis longis 



Paraphyses subnullae. 

 Capsula siccitate erecta, inclinata, subaequalis, dorso nempe 



convexior, lutescens ore rubro, humore lcevis, annulata. Meni- 



brana interna discreta. 

 Sporula immersa hyaliua, globosa, laevia, in acervulo sordide 



ochroleuca. 



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

 laciniis albidis. 



Operculum fere prioris, cum calyptrae apice arete cohaerens sem- 

 perque hoc pileatum. 



Calyptra profunde dimidiata, basi villis hyalinis pulchre fimbri- 

 ata, apice semper lacera. 



Praecedenti proximum, sed ob foliorum directionem, setas ag- 

 gregatas, capsulam sub-obliquam que operculum cum calyp- 

 tra cohcerens sat distinctum. 



A. D. introflexo distinguitur praasertim foliorum apicibus nun- 

 quam hyalinis. 



8. Dicranum {Campylopus) exasperatum, Griff. PI. XCIV. 

 Fig. I. Campylopus exasperatus, Brid. Bryol Univ. 

 1. p. 473. 

 Hab. Rupes apricae Churra Punjee. 



Descriptio Bridelii loc. cit, pluntre nostrae apte fere convenit ; 

 hujus vers folia perichoetialia pilo albo non termina a seta 

 que apicem versus solum tantum scabrella. 



• Although the Setae are aggregate, yet in this as well as in D. ericoides 

 no more than the usual number of pistilla can be said to be fecundated, 

 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 setce, in which, as in some Brya, it arises from the develop- 

 ment of more than one pistillum of one flower. 



