Swartzia iniridensis R.S.Cowan

  • Authority

    Cowan, Richard S. 1967. Swartzia (Leguminosae, Caesalpinioideae Swartzieae). Fl. Neotrop. Monogr. 1: 3-228. (Published by NYBG Press)

  • Family

    Fabaceae

  • Scientific Name

    Swartzia iniridensis R.S.Cowan

  • Type

    Type collection. A. Fernández 2314 (holotype US 2199669), near Morichal, drainage of Río Inírida, near mouth of Río Papunaua, Vaupés, Colombia, Feb. 20, 1953.

  • Description

    Latin Diagnosis - Arbuscula 3-4 m alta, ramulis velutinis; stipulae persistentes rigidae, ca 2 mm longae, velutinae; folia unifoliolata, petiolis 4-6 mm longis, velutinis, stipellis ca 0.5 mm longis, petiolulis 2.5-4 mm longis, velutinis, laminis glabris, 16-22 cm longis, 5.5-8 cm latis, elliptico-oblongis basi subobtusis ad acutis apice acuminatis, venis venulisque conspicuis, supra costa impressa et venis primariis parce salientibus, infra costa venis primariisque salientibus; inflorescentiae axillares, 6-8 cm longae, axe 6-8 cm longo, dense velutino, pubibus nitidis, bracteis persistentibus ad deciduis, ca 1.5 mm longis, nitido-velutinis, bracteolis persistentibus, ca 1.5 mm longis, acutis anguste triangularibus nitido-velutinis; pedicelli 9-15 mm longi, velutini pubibus nitidis; alabastra ovata, ca 14 mm longa et 8 mm diametro; calycis segmenta 4 persistentia externe velutina intus sericea sed mox glabrescentia; petalum in alabastro subsessile, lamina subrotundata glabra; stamina maiora 4 vel 5, filamentis ca 10 mm longis, glabris, antheris longe lanceolatis glabris, 4.5-5 mm longis, ca 1.2 mm latis, cum mucro ca 0.4 mm longo, staminibus minoribus glabris, antheris lanceolatis; stigma obtusum; stylus ca 3 mm longus, glaber; ovarium ca 6 mm longum et 2.5 mm latum, elliptico-oblongum glabrum sed in uno margine sericeum, gynophoro ca 9.5 mm longo, glabro; fructus ovalis, ca 27 mm longus, 15-17 mm latus, glaber, carpophoro 18-20 mm longo, glabro.

  • Discussion

    The new species is clearly related to S. floribunda; the intramarginal vein which interconnects the primary veins in the leaflets of both species, and pubescent inner surfaces of the calyx are evidences of this relationship. The new species differs by its plane leaflets and the partly pubescent ovary.

  • Distribution

    (Fig. 43). Known only from one drainage system in southeastern Colombia in riverine forest, 200-250 m alt. COLOMBIA. Vaupés: Raudal Alto or Mariapiri, Río Inirida, Gernandez 2094 (F, IAN, US).

    Colombia South America| Vaupés Colombia South America|