Hi/pnum.] BRYACE^. 35;[ 



Hab. Northwest coast of America (Douglas). 



Differs from H. aplocladum in its rougli pedicel and broader leaves, the 

 perichtetial spreading. A few fragments of this species only have been 

 seen. It appears to be about the size of the common //. inyurum. The 

 scabrous seta of this moss may be considered a new feature iu the sub- 

 genus to which it is here referred, but after consideration of tlie cliaracters 

 which constitute the group Isotheclum, it becomes evident that it cannot 

 be defined distinctly from the groups Brachythecium and Scleropodium 

 of Schimper, — {Mitten. ) 



Subgenus XL EURHYNCHIUM. (PL 6.) 



Plants more or less distinctly pinnate-ramulose. Leaves 

 apen, rarely subsecuncl, cordate at base and decurrent, broadly 

 ovate or oblong, acuminate, serrate all around, costate, sub- 

 scarious, rarely soft ; cells smooth, or slightly papillose in some 

 American sj)ecies, narrowly rhomboidal, siibvermicular, enlarged 

 at the basal angles. Perichaetial bud rooting. Calyptra fuga- 

 cious. Capsule on a rough or smooth pedicel, cernuous or 

 horizontal, oval-oblong. Operculum more or less long-rostrate. 

 Peristome of Brachythecium. Annulus compound, rarely none. 

 — JEurhynchiwn, Schimp. 



* Leaves narroioly areolate, (/lossy, striate. 

 •)- Pedicel smooth ; flowers monoecious or pseudo-monoecious. 



70. H. Strigosum, Hoffm. In loose flat mats or in dense 

 inflated tufts; primary stems cree]nng, stoloniferous, Avith dis- 

 tant leaves, the secondary prostrate or erect, ramulose ; bi-anch- 

 lets gradually attenuate, sometimes fiagelliform : leaves open, 

 ovate or triangular-lanceolate upon the branchlets and gradually 

 narrowly acuminate, those of the small branchlets short and 

 less acute, or blunt at the apex ; paraphyllla small, round-ovate ; 

 cells narrowly rhomboidal, the alar oval-quadrate and larger: 

 flowers pseudo-monoecious; annual buds of male flowers, con- 

 taining antheridia without paraphyses, adhering to the radicles 

 of fertile plants; perichajtial leaves abruptly narrowed into a 

 long filiform flexuous point, with a thin costa or ecostate : cap- 

 sule cernuous and subhorizontal, oval-oblong or subcylindrical, 

 broadly annulate; operculum rostrate, convex at base; teeth 

 narrowly lamellose inside ; cilia two, slender, not appendiculate, 

 a little shorter than the segments. — Deutschl. Fl. ii. 76. H. 



