TRICHOSTOMUM VAGINANS, Sulliv.
Tab. 28.
Plantæ elatiusculæ, gracillimæ, in caispites superne flavo-virides confertæ.
Caulis subuncialis, innovationibus longis erectis tenuibus ramosus.
Folia caulina ramulinaque minuta, erecto-appressa, anguste oblongo-lanceolata, comalia majora longius acuminata; perichætialia longe vaginantia, subito breviter acuminata; omnia costa latissima cum apice obtusiuscula desinente, marginibus planis integerrimis, retique e cellulis inferne oblongis superne subquadratis conflato prsedita.
Flores dioici: plantæ masculæ femineis similes; floribus terminalibus subcapituliforraibus; antheridiis elongatis paraphysatis.
Capsula cylindraceo-oblonga, regularis, pedicello longissimo pertenui elata; peristomii dentibus sedecem dilute flavescentibus lævibus (nee granulatis) 8–10-nodoso-articulatis integris subfissis vel vario modo pertusis, membrana basilari omnino nulla; annulo latissimo composito; operculo conico breviter obtuse rostrato.
Trichostomum vaginans, Sulliv. Musc. Alleghan. No. 176; Mosses U. States, p. 26; Sulliv. et Lesqx. Musc. Bor.-Amer. Exsicc. (ed. 1), No. 104.
Trichostomum pusillum, var., Hook, et Wils. in Drumm. Musc. Amer. Coll. 2, No. 60 & 61.
Trichostomum tortile, var. pusillum, Müll. Synop. Musc. 1, p. 455.
Hab. Clayey and sandy soil, from New Jersey to Missouri.
This species resembles both T. tortile and T. tenue; but these have a much narrower annulus (simple in T. tortile), and the teeth of their peristome are strongly papillose or granular on
