Mmci.~\ 



PLOEA OP NEW ZEALAND. 



77 



lacinise sedecim pluresve irregulares, erectse, in conum conniventes. Calyptra conico-mitra3formis, apice 

 plus minus scabra papillosave, cseterum lsevis, basi appendicibus quatuor pluribusque convergentibus 

 primo ortu introflexis coalitis. Capsula subcylindrica, erecta, lsevis vel sulcata, exannulata. Operculum 

 conico-subulatum. — Folia multifaria, oblonga, areolis circularibus discretis punctiformibus. Color lutes- 

 cens, Irunneus vel ferrugineus, scepe quasi deustus. Sedes in arboribus. Caulis repens, sureulis erectis 

 confertis, ut in Macromitrio. 



For remarks on the genus, see PL Antaret. p. 126. The calyptra differs essentially from that of Macromitrium. 



1. Schlotheimia Browtiii, Scliwsegr. ; foliis lingulatis obtusiusculis cuspidulatis erecto-patentibus laxi- 

 usculis siccitate tortilibus, capsula striata, peristomio interno 32-partito, calyptra Isevi.—Schwaigr. Suppl. ii. 

 p. 2, 52, 146. t. 167. Bridel, Bryol. Univ. 



Hab. Northern Island : Bay of Islands, J. B. II. Port Nicholson, Lyall. 



Identified by the description only, for we have not compared it with New Holland specimens. — Stems more 

 slender than in other allied species. Leaves more obtuse than in 8. quadrifida (PI. Antaret. p. 126), slightly rugose 

 (but far less so than in 8. nitida and 8. rugifoKa). Nerve narrow, scarcely excurrent into the short apiculus; 

 areolae more distinct. Capsule small, ovate-oblong. Whole plant considerably smaller and more delicate than 8. 

 quadrifida. Male inflorescence found only in a nidulant, ambiguous state, on a few of the specimens. 



Gen. XXV. MACBOMITRIUM, Bridel. 



Peristomium duplex vel simplex, interdum : exterius intus sub ore capsula? adnatum, dentes sedecim 

 per paria plus minus approximati, plani, lanceolati : interim membrana multifida lacera. Calyptra conico- 

 mitrseformis, longitudinaliter plicata, sulcatave, basi hand appendiculata, inferne in plures lacinias demum 

 partita, glabra vel pilosa. Capsula ovata, basi attenuata, vix apophysata, aequalis, erecta, exannulata, longi- 

 pedunculata, pachyderma, ore siccitate ssepius plicis octo contracta. Operculum rectum, rostratum. — Folia 

 multifaria, lanceolato-oblonga, areolis minimis circularibus punctiformibus. Caulis repens, sureulis erectis 

 confertis. 



Macromitrium differs from Orthotrichum in the narrow, subulate calyptra, which is not inflated previous to the 

 development of the capsule, in the absence of an apophysis, in the rostrate operculum, and in general habit. The 

 peristome is variable, and in some species apparently wanting. The calyptra varies sometimes in degree of pubescence, 

 hence Leiotheca, Bridel, is a very questionable genus.— The group requires careful revision. 



a. Calyptra glabra ; peristomium duplex. 



1. Macromitrium sulcatum, Hook.; foliis patentibus lineari-lanceolatis subundulatis acuminatis apice 

 denticulatis siccitate crispis tortilibus.— Schlotheimia sulcata, Hook. Muse. Exot. t. 156. Bridel, Bryol. 

 Univ. 



Yar. ft ; foliis minus acuminatis vix undulatis apice subintegris. 



Hab. Northern Island, Colenso. 



One of the largest species of the genus ; also found in Ceylon. 



b. Calyptra glabra ; peristomium simplex. 



2. Macromitrium fimbriatum, P. Beauv. ; ramis brevibus, foliis patulis ligulatis obtusis margine sub- 

 planis subcrenulatis siccitate crispis involutis laxius areolatis. — Orthotrichum, P. Beauv. Prodr. 80. Brid. 

 Bryol. Univ. M. uncinatum, Bridel. 



Hab. Northern Island : "Waikehi, Br. Sinclair. Port Nicholson, Lyall. 



Schwsegrichen's figure, etc. (Supp. t. Ill) seems to belong rather to M. mucronifolium, which frequently grows 



VOL. II. 



