Ferdinandusa schultesii 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 schultesii Steyerm.

  • Description

    Latin Diagnosis - Arbor ad 3 m altus, ramis juvenilibus tomentellis; stipulis non visis; foliis petiolatis, petiolis 4-9 mm longis glabris, laminis coriaceis elliptico-ovatis vel ovatis apice abrupte obtuse acutis vel obtusis basi subacutis vel rotundatis 5-9 × 3-5.5 cm utrinque glabris, nervis lateralibus utroque latere 7-8 inconspicuis supra venulis tertiariis subtiliter reticulatis; inflorescentiis 2-2.5 × 2-2.5 cm, pedunculo dense velutino, ramulis principalibus 6-13 mm longis, pedicellis nullis vel ad 1 mm longis dense velutinis; corollis 25 mm longis, tubo 21-22 mm longo basi 2-2.5 mm lato fauce 4.5 mm lato, lobis quatuor 4 × 3.5-4 mm; calyce tetramero, hypanthio 2-2.5 mm longo minute puberulenti vel superne glabrescenti, calycis lobis 4 late tri-angularibus acutis discum superantibus 0.5 × 0.5-0.6 mm intus eglandulosis.

  • Discussion

    Type. Cerro Isibukuri, Río Kananari, Río Apaporis, Amazonas-Vaupés, Colombia, 28 Sep 1951, R. E. Schultes & I. Cabrera 14475 (holotype US).

    Paratype. COLOMBIA. Vaupés: Río Piraparaná, cuenca del Río Apaporis, Loma Buc-chia, alt 250-600 m, 28-31 Aug 1952, arbol 3 m, flores blancas (14295), flores amarillas (14294), hojas por el envés amarillas (14295), H. Garcia-Barriga 14294,14295.

    This species is related to F. rudgeoides (Benth.) Wedd., from which it differs in the sessile flowers or with pedicels at most 1 mm long and in the shorter and coriaceous leaf blades.