EXPLANATION OF THE PLATES. 419 



Platygyrium. — Plant, capsule "with calyptra and operculum, oper- 

 culum, and foiu- teeth of the peristome with as many segments and a 

 quarter of the large annulus, of P. rejyens, Bruch & Schimp. 



CylindrotheciurQ. — Plant, capsule with calyptra aud operculum, and 

 two teeth of the peristome witii one segment, of C. cladorrhizans, 

 Schiinp. 



Myurella. — Plant, two capsules with opercula, and two teeth of the 

 peristome with a segment and three cilia, of il. Cureyana, bulliv. 



Leskea. — Plant, capsule with calyptra and operculum, operculum, live 

 entire teeth of the peristome with the hases of three brolcen ones and 

 three segments, and a tootii more enlarged with a segment and part 

 of the basilar membrane and part of the annulus, of L. obacura, 

 Heclw. 



Clasmatodon. — Plant, capsule with calyptra and operculum, two 

 opercula, portion of the single peristome with part of the annulus, 

 and vertical section through the peristome, of C jjarvulus, SuUiv. 



Crypheea. — Plant, pei-ichaetiuin enclosing the capsule with its calyptra 

 and operculum, calyptra, capsule with operculum partly removed, 

 two teeth of the peristome with three segments and a part of the 

 annulus, and two spores, of C. glomerata, Bruch & Schimp. 



Pfcerygophyllum (as Ilookeria). — Plant, calyptra, capstile with oper- 

 culum, and two teeth of the peristome with two segments, of P. lucens, 

 Brid. 



Climacium. — Plant, calyptra, capsule with operculum, operculum, 

 and two teeth and two segments of the peristome, of C. Americanum, 

 Brid. 



Neckera. — Plant, portion of stem with male flower and perichaetium 

 enclosing the capsule, capsule with calyptra and operculum in con- 

 nection with the vaginule and paraphyses of the periclnetial branch, 

 and two teeth of the peristome with three rudimentary segments, of 

 N. pennatu, Hedw. 



Auomodon. — Plant, capsule Avith calyptra and operculum, and two 

 teeth of the peristome with the inner membrane and a part of the 

 annulus, of A. ohtusifolinfi, Bruch & Schimp. 



Homalia. — Plant, calyptra, capsule with operculum, and part of the 

 peristome (one tooth, two segments, one cilium, and part of the annu- 

 lus), of Ilyimnm Wrightii, SuUiv. (which agrees with Homalia so far 

 as represented). 



Hypnum. (Bvachythecium). — Plant, caljrptra, two capsules with oper- 

 cula, and part of the peristome (one tooth, one segment, and two 

 cilia, with part of the annulus), of H. salebrosiun, Hoffm. 



Plate VI. 



Thelia. — Plant, calyptra, capsule with operculum, and three teeth of 

 the peristome with tlu-ee segments of the inner membrane, of T. hir- 

 tella, Sulliv. — (Sullivant.) 



Hypnum (Em-hyncMuin). — Plant, and capsule with operculum, of H. 

 crasulnervlum, Tayl. 



Hypnum {Plar/iothecu(m). — FlAnt, and capsule with operculum, of 

 //. dentlculatum, Linn. 



Hypnum (Awhlystegium). — Plant, and capsule with operculum, of H. 

 serpens, Linn. 



Hypnum (Psexdoleskea). — Plant of H. atrovirens, Dicks. Two seg- 

 ments of the inner peristome with two cilia, of H. catenulatum, Brid. 



