MUSCI 407 



TRIBE 6. ORTHOTRICHAXDEAE. 

 538. ORTHO'TRICHUItt, Hedw. Bristle-Moss. 



[Or. orthos, straight, & Thrix, hair ; the calyptra often clothed with straight hairs.] 

 Calyptra campanulate, plicate, usually hairy. Peristome double, or 

 single, the outer of 16 teeth approximated in pairs, when dry 

 reflexed, the inner of 16 or 8 horizontal cilia (sometimes wanting). 

 Lid elongated-conical. Monoicous, or dioicous. 



t Peristome double; cilia 8. 



1. O. crispum, Hedw. [Curled']: Leaves spreading, linear- 

 lanceolate, when dry very much crisped; capsule elongated, clavate, 

 grooved; calyptra very hairy. On trees : common. 



2. O. Hlltchinsiae, Hook. $ Tayl. [Miss Hutchins's] : Leaves 

 dark green, lanceolate, erect, when dry appressed ; capsule exserted, 

 grooved; calyptra hairy. On shaded rocks. 



3* O, Llldwigli, Schwaegr. [Ludwig's] : Leaves erect-spread- 

 ing, yellowish-green, lanceolate, acuminate, crisped when dry; 

 capsule exserted, pyriform, smooth, grooved only at summit, the 

 orifice much contracted; calyptra hairy, laciniate at base. On 

 trees. 



f f Peristome single. 



4, O. Strangulatum, Beauv. [Strangulated] : Leaves lance- 

 olate, obtuse, straight when dry, and tawny brown ; capsule im- 

 mersed, grooved ; teeth of the peristome never recurved ; calyptra 

 plicate-ribbed, smooth, or slightly hairy. On trees: very common. 



539. RUMMO]VD V IA ? Hook. 



[Dedicated to Thomas Drummond; a Scotch Botanical Collector.] 

 Calyptra large, cuculliform, beaked, ventricose and somewhat plicate 

 at base. Capsule exserted. Peristome of 16 very short truncated 

 teeth. Lid convex-beaked. 



1. D. lave Hal si, Hook. [Clubbed] : Stems prostrate and 

 creeping, with crowded erect branches ; capsule ovoid, pedicellate ; 

 leaves oblong, acuminate, densely imbricated, the nerve vanishing 

 near the apex ; beak of the lid long, oblique from a convex base. 

 On trees, forming large dark-green patches. 



TRIBE 7. TETRAPHID'EAE. 



54O. TE'TRAPHIS, Hedw. Four-toothed Moss. 



[Gr. Tetra, four, and phys, brought forth ; alluding to the 4-toothed peristome.] 



Calyptra mitriform, plicate, and rather lacerated at base. Peristome 



single, of 4 equidistant erect 3-sided-pyramidal teeth, ribbed on the 



back, not articulated. Lid conical. Monoicous. 



1. T. pel like id a, Hedw. [Pellucid]: Stems sparingly branched ; 

 lower leaves minute, upper ones lance-ovate and oval, acuminate, 

 nerved to near the apex ; capsule oblong-cylindrical ; pedicel about 

 an inch long. Woodlands ; on rotten stumps. 



