Stegolepis steyermarkii Maguire

  • Authority

    Maguire, Bassett. 1965. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 12 (3): 1-285.

  • Family

    Rapateaceae

  • Scientific Name

    Stegolepis steyermarkii Maguire

  • Type

    Type. Common terrestrial and also epiphytic on lower parts of tree; Ueitepui, 125 km south of El Dorado between Luepa and Cerro Venamo, at alt. 1100-1400 m, Estado Bolivar, Venezuela, 7 Mar 1962, Julian A. Steyermark & Leandro Aristeguieta 17 (holotype NY, isotype V E N ) . Paratypes. Estado Bolivar: Cerro la Danta, alt. 1040-1060 m, 13 Abril 1960, Steyermark d- Nilsson 48 (NY) ; Cerro Venamo at alt. 1400-1450 m, 1 Enero 1964, Steyermark, Dunsterville & Dunsterville 92498 (NY).

  • Description

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    Latin Diagnosis - Herbae perennes ad 8 dm altae, terrestres vel subepiphyticae; caudicibus compressis; vaginis conduplicatis subinduratis, lanceolatis, 15-20 cm longis, 4-5 cm latis, scario-marginatis, evidentur nervatis; laminis lineari-lanceolatis,'4-6 dm longis, 2.5-3.5 cm latis, falcate acuminatis, costa prominentissima, venis primariis prominulis 1.4-2.0 mm apartis; pedunculis 1.5-2.5(-3.0) mm diam, nervatis, vulgo 4-6 per axillis foliorum; inflorescentiis essentialiter globosis vulgo 2.0-2.5 mm diam; spieulis vulgo 30^0, fusiformibus, 12-14 mm longis, 3-4 mm diam; bracteolis ca. 16, gradatis, oblongo-lanceolatis, exterioribus ca. 3 mm longis, interioribus ca. 8 mm longis, apice obtuso, cucullato; sepalis 3, breve connatis ad basim, lammis induratis naviculatis, lanceolatis, ca. 10 mm longis, ea. 2.5 mm latis; petalis 3, 10-12 mm longis, unguibus ca. 2 mm connatis, 5-nervatis, laminis oblongo-lanceolatis, impercepte venatis; staminibus 6, filamentis breve unquibusadnatis, ca. 4 mm longis; antheris 4-locularibus, evidentur introrsis, ca. 6 mm longis, loculis posterioribus apice 0.3-0.4 mm productis; ovario 3-loculare, loculis pluriovulatis; stylo subulato-trigono, ca. 12 mm longo; capsulis induratis 4-5 mm longis; seminibus dorsi-ventrale compressis, oblongo-disciformibus vel plusminusve obovatis vel prismaticis, 1.2-1.8 mm longis, alveolatis, cum membranis evanescentibus investis.

  • Distribution

    Known only from the sandstone areas of the northeastern periphery of the Gran Sabana, Estado Bolivar, Venezuela. Additional specimen: Fila de la Danta at alt. 1200 m, 18 Abril 1960, Steyermark d Nilsson 296 (NY). Vareschi & Foldats 4768 from Auyan-tepui is doubtfully referred here.

    Bolívar Venezuela South America| Venezuela South America|