Psilotum nudum (L.) P.Beauv.

  • Authority

    Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.

  • Family

    Psilotaceae

  • Scientific Name

    Psilotum nudum (L.) P.Beauv.

  • Description

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    Species Description - Plants chieffy erect or ascending (rarely pendent), (5-)20-60 cm long, the main stalk 2-4 mm thick toward base; divisions acutely dichotomous, numerous, the whole plant having a loosely brush-like appearance; branches distinctly 3-angled. Leaves remote, triangular-subulate, 1-2(-3) mm long, simple, the fertile ones (sporangiophores) smaller than the sterile or rudimentary, forked from base, 1 mm long. Synangia ca. 2 mm long and broad, yellow or brownish.

  • Discussion

    Fig. 5.

    Basionym. Lycopodium nudum Linnaeus, Sp. pl. 2: 1100. 1753.

    Type. L I N N 1257.1, from "in Indiis."Syn. Hoffmannia aphylla Willdenow, Bot. Mag. (Romer & Usteri) 2(6): 17. 1789.

    Psilotum triquetrum Swartz, J. Bot. (Schrader) 1800(2): 109. 1802.

    Bernhardia dichotoma Willdenow, J. Bot. (Schrader) 1800(2): 132. 1802. (Note: The epithets used by Swartz and Willdenow were all based on the same Linnaean type as the accepted name for the species.)

    Psilotum floridanum Michaux, Fl. bor.-amer. 2: 281. 1803. (Type from Florida, not seen.)

    Bernhardia antillarum K. Muller, Bot. Zeitung (Berlin) 14:234. 1856. (Syntypes from Jamaica, Martinique, and Trinidad, not seen.)

    Pantropical, extending also into some warm-temperate areas. Distribution in Puerto Rico. Widely distributed but not often collected. Material has been seen from Arecibo, Bayamon, Dorado, Juana Diaz, Maricao, Ponce, and Quebradillas. Also sometimes cultivated. Virgin Islands. St. Thomas, St. John, Tortola, and Virgin Gorda.Habitat. Epiphytic, on stumps and old logs, in crevices of old masonry, occasionally in crevices of cliffs or on ledges, or rarely in soil or gravel on the ground, from sea-level to upper middle elevations (0-700 m).

  • Distribution

    recibo, Bayamon, Dorado, Juana Dias, Maricao, Ponce, and Quebradillas. Also sometimes cultivated. Virgin Islands. St. Thomas, St. John, Tortola, and Virgin Gorda.

    Puerto Rico South America| Arecibo Puerto Rico South America| Bayamón Puerto Rico South America| Dorado Puerto Rico South America| Juana Días Puerto Rico South America| Ponce Puerto Rico South America| Quebradillas Puerto Rico South America| Water Island Virgin Islands South America| Saint Thomas Virgin Islands of the United States South America| Tortola Virgin Islands South America|