Fissidens intramarginatus (Hampe) A.Jaeger

  • 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

    Fissidentaceae

  • Scientific Name

    Fissidens intramarginatus (Hampe) A.Jaeger

  • Description

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    Species Description - Plants small, (3.5-)6-9(-14) mm long, simple or branched, often tinged reddish-brown. Leaves curled inward from tips when dry, (0.5-)0.9-1.5 (-1.7) mm long, usually numerous, oblong to lanceolate, acute; margins crenulate to serrulate on dorsal and ventral laminae, bordered on the vaginant laminae and adjoining parts of ventral laminae of all leaves infrequently and irregularly on the dorsal lamina, the border unistratose, entire to distantly denticulate; costa strong percurrent or short-excurrent; vaginant laminae ± unequal- dorsal lamina truncate to rounded below, not decurrent; cells pluripapillose, many of them often unipapillose, small, (4-)5-6(-7) µm long, obscure, in cross-section ±2:1. Gonioautoicous and probably also rhizautoicous. Setae terminal on main stems and branches, 1(-2) per perichaetium, (1-)2-3(-4.5) mm long, reddish-yellow; capsules usually erect and symmetric, (0.3-)0.5-0.6(-0.8) mm long; opercula long-rostrate; peristome finely papillose below, spirally thickened above. Spores (9-) 11-13 µm, smooth. Calyptrae cucullate, ± papillose.

  • Discussion

    Fig. 32

    F. intramarginatus (Hampe) Mitt, J. Linn. Soc., BoL 12: 594.1869.

    Conomitrium intramarginatum Hampe, Linnaea 31:531.1862.

    Fissidens pabstii Jacg., Enum. Fissid. 23.1869.

    Conomitrium rubiginosum Hampe, Vid. Medd. Naturh. For. Kjøbenhavn. m, 5:176.1874.

    Fissidens rubiginosus (Hampe) Par., Index Bryol. 484.1896.

    F. hancockianus Steere, Allan Hancock Found. Pacific Exped. Publ. III: 2.1936.

    F. willisiaeBartr., Bryologist 42:152.1939.

    The plants have most often been confused with F. elegans but are more consistently bordered on the vaginant laminae of all leaves and a short distance up the adjoining ventral lamina. Short borders are infrequentiy found on the dorsal lamina of a few leaves. The plants are often red-tinged, whereas those of F. elegans are often pale-green, never reddish. The species can also be confused with F. weirii var. hemicraspedophyllus, but it is smaller size and has leaves with a unistratose border.

  • Distribution

    On soil and limestone rocks and boulders, often on stream banks and bluffs at elevations of ca. 400-600 m; Nayarit, Veracruz.—Mexico to northern South America; West Indies.

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