Uypnum.] BKYACE^. 327 



laciniate-ciliate ; perichastial leaves short-acuminate, denticulate 

 at the ajDex : capsule oblong-cylindrical, ceruuous, arcuate when 

 dry, light brown ; lid conical, acute and apiculate ; teeth very 

 densely articulate, dark orange ; segments nearly entire ; cilia 

 three, long, perfect; annulus large, compound. — Bot. Tasch. 

 332; Schwaegr. Suppl. ii. 1. 158, 1. 142. Thuidium Blandovii^ 

 Bruch & Schimp. Bryol. Eur. t. 486. 



Hab. Peat bogs, Wisconsin [Lapham); Western New York; Canada 

 (Macoun)\ Fort Colville (Lyall). 



Species not sufficiently Jcnown. 



17. H. remotifoliuni, Grev. Monoecious: plants irregu- 

 larly bipinnate : stem-leaves large, lanceolate-acuminate, cris- 

 pate; borders re volute, undulate: capsule short-pedicelled, 

 erect, narrowly long-cylindrical, ascending ; annulus present. — 

 Edinb. Mem. Wern. Soc. v. 483 ; Muell. Syn. ii. 490. 



Hab. Western America. 



Mueller remarks on this species that the figure in Schwaegr. Suppl. ii. 

 2. 170, t. 200, given from Hooker's specimens received from Montagne, 

 scarcely represents the species. Its true characters are not known and 

 its affinities are uncertain. Mueller had seen only an imperfect peristome 

 of the species. 



18. H. Alleni. Stems erect or compressed with fasciculate 

 innovations, bipinnately branching, densely paraphyllose : leaves 

 broadly ovate, concave, very shortly acuminate or acute, plane 

 or subsulcate, minutely papillose, crenulate on the borders, 

 auriculate and subdecurrent at base; costa strong, ascending 

 nearly to the apex ; areolation minute, distinct, unipapillose ; 

 paraphyllia long, simple or sparingly divided, geniculate ; branch- 

 leaves short, lax, flexuous, without paraphyllia and with more 

 slender shorter costa, etc. — Thuidium Alleni^ Aust. Bull. Torr. 

 Club, vii. 16. 



Hab. In a peat swamp near New Haven, Conn. {John Allen). 



Subgenus IV. CLAOPODIUM. 

 Plants small; stems i')rostrate or creeping, increasing by 

 stolons or lateral branches, divaricate, irregularly bipinnately 

 ramulose ; branches short and simple, or longer and attenuate, 

 flagelliform. Leaves open, erect, lanceolate-acuminate from an 

 ovate subcordate base, denticulate all around, i^apillose on the 



