. Manual of the mosses of North America [microform]. Mosses; Mousses. I'i PI m'W\'. t,i 318 BRYACEiE. [TTijpnum, 13. Rhynchostegium. Stems more or less compressed. Lcav(!3 nearly entire, simply costate, rarely shortly bicostate; areolation rhomboidal, somewhat loose, enlarged at base, 14. Thamnium. I'lants large, dendroid; stem woody. Stem-lcavi.'s searious; braneh-leaves strongly dentate; cells minute, round- oval, the basilar longer. Capsules clustered. C. Plants variously divil^'d. Capsules cernuous, rarely suberect; oper- culum conic or rostrate. ? Leaves thin, glossy, open, erect or
. Manual of the mosses of North America [microform]. Mosses; Mousses. I'i PI m'W\'. t,i 318 BRYACEiE. [TTijpnum, 13. Rhynchostegium. Stems more or less compressed. Lcav(!3 nearly entire, simply costate, rarely shortly bicostate; areolation rhomboidal, somewhat loose, enlarged at base, 14. Thamnium. I'lants large, dendroid; stem woody. Stem-lcavi.'s searious; braneh-leaves strongly dentate; cells minute, round- oval, the basilar longer. Capsules clustered. C. Plants variously divil^'d. Capsules cernuous, rarely suberect; oper- culum conic or rostrate. ? Leaves thin, glossy, open, erect or spreading. 15. Plagiothecium. Branches few, mostly simple, complanato. Leaves slightly unsymmetrical at base; costa none, or double and very short; areolation rhomboidal-elongaled, little enlarged at base. Capsule suberect; operculum conic or rostrate. 10. Amblystegium. Stem creeping and widely spreading. Leaves mostly entire, opaque or glossy; costa simple, rarely none; areo- lation distinct, rliomboidal. Capsule cylindrical-oblong; lid conical. 17. Stem irregularly divided with pinnate or fastigiate branches. Leaves spreading, subsquarrose; costa short or none; areolation minute, llexuous. * * Leaves falcate-secund, of solid membranous texture. 18. Harpidium. Stems pinnately ramulose. Leaves simply costate to the apex; areolation very narrow, linear, much inllated at the concave basilar angles. 19. Cratoneurum. Stems prostrate; branches erect, rigid, villous, pinnate. Leaves simply and strongly costate; areolation dense, linear, oblong at the enlarged base and decurrent angles. Cap- sule cylindrical, cernuous. 20. Rhytidium. Stems large, prostrate, irregularly pinnate with short subuncinate branehlots. Leaves seound and suhfalcatc, midu- late-rugose; areolation compact, linear. Capsule cylindrical, arcuate. 21. Otenium. Branches in compact tufts, pinnately ramulose. Loaves hamate and circinnate-secnnd. Capsule cylindrical. 22. Ctenidium. Plants cespitose; branche
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherbosto, bookyear1884
