Bartramia halleriana Hedw.

  • Authority

    Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part One: Sphagnales to Bryales. Mem. New York Bot. Gard. 69 (1): 1-452.

  • Family

    Bartramiaceae

  • Scientific Name

    Bartramia halleriana Hedw.

  • Description

    Species Description - Plants up to 10 cm high, in lax, yellow- or light-green tufts, tomentose below, simple or sparsely branched. Leaves flexuose to circinate when dry, 8-10 mm long, narrowly lanceolate, acuminate, the tips not brittle, the base oblong, ± appressed to the stem but not tightly sheathing; margins revolute, serrate in the upper 2/3, the teeth paired; costa excurrent; upper cells in several rows on either side of the costa, short-rectangular, up to 20 µm long, 10 µm wide, papillose at the upper ends. Autoicous or synoicous. Setae 2-3 mm long, as long as or slightly longer than the capsules, often clustered; capsules immersed, suberect to inclined, 2.5 mm long, subglobose, furrowed; operculum convex; exostome teeth 540-570 µm long, lanceolate, strongly barred, granulose below, papillose at the tips; endostome shorter than the teeth, with keeled, yellowish segments and straight cilia from a high basal membrane. Spores subglobose to reniform, papillose, 18-25 µm. (Sporophytes not seen in Mexican material.)

  • Discussion

    Fig. 427

    B. halleriana Hedw., Sp. Muse 164. 1801.

    Even when sterile Bartramia halleriana is easily recognized by its large size and flexuose or circinate leaves with bases not closely sheathing or shouldered. The short setae, causing the capsules to appear immersed, also provide distinction.

    Even when sterile Bartramia halleriana is easily recognized by its large size and flexuose or circinate leaves with bases not closely sheathing or shouldered. The short setae, causing the capsules to appear immersed, also provide distinction.

  • Distribution

    On moist or wet rocks or cliffs at upper elevations; Oaxaca.—Mexico; western North America; mountains of Europe; central and eastern Asia; Africa (Kilimandjaro); New Zealand.

    Mexico North America| North America| Europe| Asia| Africa| New Zealand