Ferdinandusa neblinensis Steyerm.

  • Authority

    Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.

  • Family

    Rubiaceae

  • Scientific Name

    Ferdinandusa neblinensis Steyerm.

  • Description

    Latin Diagnosis - Arbor ad 7 metralis altus, ramulis dense hirsutulis; stipulis oblongo-lanceolatis acuminatis striatis 11-13 × 4-5 mm membranaceis glabris; foliis petiolatis, petiolis 4-5 mm longis vel foliis supremis subsessilibus dense hirsutis, laminis elliptico-oblongis vel ovato-oblongis apice subcaudatis, acumine 1-2 cm longo, basi rotundatis vel subcordatis 6-19 × 2.5-7 cm submembranaceis supra parce adpresso-pubescentibus vetustioribus glabrescentibus subtus parce pubescentibus costa media atque nervis lateralibus pilis patentibus ad 1 mm longis dense hirsutis vel hispidis exceptis, nervis lateralibus utroque latere 9-11 subtus elevatis adscendentibus prope marginem anastomosantibus, venulis tertiariis subtus paulo prominentibus; inflorescentiis 5-7.5 × 5.5-9 cm trichotome ramosis, ramulis hirsutis multifloris, pedunculo principali 1.5-2.5 cm longo dense hirsutulo; bracteis sub ramulis pedicellisque triangulari-ovatis acutis 1.1-1.5 × 1 mm membranaceis glabris; floribus sessilibus (centralibus) vel 1-3 mm pedicellatis, pedicellis hirsutis; calyce hypanthioque 3-3.5 mm longo, hypanthio turbinato-oblongo 2 × 1.5 mm glabro, calycis lobis 4 erectis triangulari-lanceolatis acuminatis 0.8-2 × 0.5-0.8 mm apice setosis pilis 0.7 mm longis praeditis ceterum glabris eglandulosis vel intus basi juxta sinus 1-glandulosis; corollis tetrameris subinfundibuliformibus, tubo 20-26 mm longo basi 1 mm lato fauce 4 mm lato utrinque glabro, lobis quatuor suborbicularibus rotundatis 6 × 4.5 mm utrinque glabris; staminibus longiexsertis, antheris subreniformi-orbicularibus 0.8 × 1 mm, filamentis 13-15 mm longis parte superiore tubi affixis; stylo 23 mm longo glabro; disco basin tubi calycis superanti.

  • Discussion

    Fig 57 A-D.

    Type. Cerro de la Neblina, locally frequent in talus forest between Camp 2 and Camp 3, Río Yatua, Amazonas, Venezuela, alt 200 m, 22 Dec 1953, Bassett Maguire, John J. Wurdack & George Bunting 36800 (holotype NY, isotype VEN).

    Paratype. VENEZUELA. Amazonas: mixed montane woodland between Camp 2 and Camp 3, Cerro de la Neblina, alt 150 m, 2 Nov 1957, B. Maguire, Wurdack, C. K. Maguire & Keith 41987.

    This is related to F. hirsuta Standl. of Brazil, from which it differs in the tetramerous instead of pentamerous flowers, persistent stipules, dense hirsutulous pubescence of inflorescence branches and peduncles, longer calyx lobes, and shorter corolla tube.