GRIMMIA CALYPTRATA, Hook.
Tab. 44.
Plantæ graciliores, in pulvinulos densos e glauco-viridi incanos congestæ.
Caulis subuncialis, e basi procumbente ascendens, pluries ramosus, ramis longiusculis fastigiatis.
Folia dense conferta; inferiora erecto-patentia, elongato-lanceolata, plus minus breviter pilifera; comalia et perichætialia majora capsulam parum superantia, lineali-lanceolata, pilo hyalino scabro fere laminam aequante instructa, canaliculata, marcinibus erectis vel recurvulis; costa continua; reti superiore denso punctiformi, inferiore laxo oblongo.
Flores monoici terminales; antheridiis oblongis curvulis breviter stipitatis eparaphysatis.
Capsula emergens, in pedicello recto longitudinem suam paululum superante erecta, oblongo-ovalis, macrostoma, exannulata, sicca lævis; peristomii dentibus lanceolatis fere ad basin usque valde cribrosis; operculo conico rostrato; calyptra (icon mala) campanulato-mitræformi irregulariter rugoso-plicata 5–6-lobata uno alterove latere profunde incisa capsulae ⅔ obtegente.
Grimmia calyptrata, Hook, in Drumm. Musc. Amer. n. 60; Sulliv. & Lesqx. Musc. Bor.-Amer. Exsicc. (ed. 1), No. 139.
Gümbelia Calyptrata, C. Müll. Synop. Musc. 2, p. 773.
Hab. Rocky Mountains, Drummond. Santa Fe, New Mexico, Fendler.
In size and aspect this species approaches very closely G. leucophcæa, Grev. Its leaves, however, are narrower, not so concave, and less spreading; the mouth of the capsule is wider, and the calyptra larger. But the absence of the annulus and
