Mabea parguazae Jabl.

  • Authority

    Maguire, Bassett. 1967. The botany of the Guayana Highland--Part VII. Mem. New York Bot. Gard. 17: 1-439.

  • Family

    Euphorbiaceae

  • Scientific Name

    Mabea parguazae Jabl.

  • Description

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    Latin Diagnosis - Arbor parva ad 7 m alta; folia elliptica 8-10, raro 11 cm longa, 3.5-4 cm lata; laminis firme chartaceis vel subcoriaceis supra nitidulis, subtus opaco-glaucis, basi rotundatis, ad apicem acutis vel leviter acuminatis, ad marginem integerrimis vel indistincte undulatis, costis secundariis 10-12 jugis, subtus non prominulis; stipulae lineari-filiformes, cito caducae; thyrsi 6-7 cm longi, 3 cm lati ad apices ramulorum vel in axillis foliorum singuli haud paniculatim conferti; cymulae male 3-florae umbellatae, umbellis sessilibus, floribus maturis 3 mm diametro flavo-griseis; stamina 55-60; pedicelli 15-20 mm longi basi brevissime coaliti, ceterum liberi; bracteae triangulares 2 mm longae, distincte biglandulosae, glandulis sessilibus haud elevatis; flores female ad basim thyrsi 4-5, pedicellis 1-1.5 cm longis; styli 1-1.5 longi ad mediam coaliti, ceterum liberi; fructus nisi juveniles ignoti.

  • Discussion

    Tree to 7 m high, flowers green to light yellow; leaves glaucous beneath. Cerro Negro Peron, on east-west crystalline range on right bank of Rio Parguaza just below El Carmen, alt 120-130 m, Bolivar, Venezuela, John J. Wurdack A Joseph V. Monachino 40981 (Holotype NY), 40982 (paratype).

    The last specimen is referred to M. parguazae only tentatively because of lack of flowers. The fruits are not quite ripe and are slightly carinate on the back of the valves. The vegetative parts match the type very well.