Schoenocephalium teretifolium Maguire

  • Authority

    Maguire, Bassett & Wurdack, John J. 1958. The botany of the Guayana Highland--Part III. Mem. New York Bot. Gard. 10: 1-156.

  • Family

    Rapateaceae

  • Scientific Name

    Schoenocephalium teretifolium Maguire

  • Description

    Latin Diagnosis - Herbae terrestres perennes; caudice brevissimo erecto, 1-2 cm longo; phyllodiis vel prophylliis 15-25 cm longis; foliis 3-5. 5-10 dm lonuis, vaginis 12-20 (25) cm lon«is plus-minusve distiehis. equitantibusque, submembranaceis, marginibus scariosis, ad basim late dilatatis; laminis teretibus, 1-3 mm diam., apicibus acutis; pedunculo solitario vel paucis, 7-12 dm longo, 2-4 mm diam., capitulo sphaerico. 2.0-3.0 cm diam.; braeteis involucralibus 2, lanceolato-triangularibus acutis, 8-32 mm longis, connatis, demum reflexis; spiculis numerosis radiatis acutis albidis vel roseis vel corallinis ve] rubri-purpureis; bracteolis 16-18 gradatis, membranaceis, (1) 3-5 (7)-nervatis, plus-minusve concavis, exterioribus laic ovatis, 1-3-nervatis, obtusis apiculatis. 2.5-5.0 mm lonuis. interioribus ferme 5-7-nervatis, lanceolato-oblongis subaeutis, 5-8 mm longis; sepalis 3, liberis, lanceolatis acutis iiuluratis, 12-16 mm longis; petalis 8-10 mm longis, ad basim in tubo 2-4 mm longo connatis, laminis pallidis, ca. 6 mm longis, 2.5 mm latis, oblongo-lanceolatis obtusis non exsertis. apieibus minute ciliatis, nervis ea. 7; staminibus 6 ad basim in tubo 2-4 mm longo connatis; filamentis latis hyalinis, 0.5-1.0 mm longis; antheris 3-4 mm longis, oblongo-linearibus ad basim ipsam 4-thecatis, sursum 2-thecatis, ad apicem truncatis biporis; ovario late obovate ca. 1.5 mm longo, 3-loculari; ovulis 2 per loculo; stylo 6-7 mm longo, filiformi plane truneato coroniformi-ciliato, 0.5 mm longo; seminibus ignotis.

  • Discussion

    Type: herbaceous perennials, terete leaves, heads spherical, spikelets radiate, acute, sepals basally orange, centrally white, pink-tipped, at maturity wholly bright red becoming purplish, petals included, abundant and dominant in open wet areas, Sabana Yenado, Cafio Pimichin, at 130-140 m alt., Rio Guainia, Terr. Amazonas, Venezuela, April 14, 1953, Maguire & Wurdack 35600 (holotype NY).