FONTINALIS DISTICHA, Hook, & Wils.
Tab. 63, 64.
Plantæ graciliores, habitu coloreque forrois minoribus antecedentis similliinæ.
Caulis 7–10-uncialis, tenuis, inferne defoliatus, rigidulus, elasticus, pinnatira et sub-bipinnatim ramulosus, ramulis remotiusculis late patentibus breviusculis substrictis.
Folia tenerrima, indistincte trifaria, laxe incumbentia, anguste lanceolata, sensira longe acuminata, modice concava, apice lenissinie serrulata, reti tenui-vermiculari.
Flores dioici: masculi numerosissimi; antheridiis longius pedicellatis.
Capsula gracilis, elongato-cylindracea; peristomii granuloso-papillosi dentibus linearibus 14–15-articulatis inter articulationes plus minus pertusis; ciliis superne clathratis inferne liberis appendiculatis; calyptra et operculo F. Lescurii.
Fontinalis disticha, Hook. & Wils. in Drumm. Musc. Amer. Coll. 2, No. 151; Sulliv. Musc. Alleghan. No. 190; Mosses U. States, p. 54; Sulliv. & Lesqx. Musc. Bor.-Amer. Exsicc. (ed. 1), No. 227.
Pilotrichum distichum, C. Miill. Synop. Muse. 2, p. 150 (excl. Syn. F. disticha var., Sulliv. Musc. Alleghan. No. 192).
Var. β. tenuior; caule ramulisque elongatis flexilibus; foliis angustioribus rigidioribus convolutis laxius areolatis; dentibus peristomialibus lanceolato-subulatis vix lacunosis crebrius articulatis.
Hab. Louisiana, Drummond.—Var. β. Southern Kentucky, Lesquereux.
A well-marked species, readily distinguished from its congeners by its slender and delicate habit, and by its long and narrow capsule.
