Swartzia schunkei 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 schunkei R.S.Cowan

  • Type

    Type collection. J. M. Schunke 122 (holotype US 1459030; isotypes A, NY, UC), Gamitanacocha, Río Mazán, Depto. Loreto, Peru, Jan. 1935.

  • Description

    Latin Diagnosis - Arbor 9 m alta, trunco 80 cm diametro, ramulis micro-puberulis; stipulae caducae minutae; petioli teretes, 7 cm longi, glabri vel micro-strigulosi; rhaches teretes, 18 cm longae, micro-strigulosae; foliola 5-jugata, petiolulis 4-6 mm longis, canaliculatis micro-strigulosis, laminis inferioribus minoribus, 10.5-11.5 cm longis, 3.5-6.5 cm latis, laminis ceteris 15-20 cm longis, 5-6.5 cm latis, laminis omnibus ellipticis ad oblongo-ellipticis basi obtusis apice hebeti-acuminatis, in costa micro-strigulosis infra et supra, costa primariis venisque supra leviter impressis, infra salientibus, venis primariis plus minusve conjugentibus submarginaliter sed vena marginali nulla; inflorescentiae 12-19 cm longae, racemosae ramuliflorae, axe micro-stiguloso, bracteis ca 1.5 mm longis et latis, triangularibus extus micro-strigulosis intus glabris, bracteolis nullis; pedicelli ca 12 mm longi, micro-strigulosi; alabastra 8-9 mm diametro; calycis segmenta 4, intus glabra, extus micro-strigulosa decidua; petalum luteum glabrum, unguiculo ca 4.5 mm longo, lamina rotundata, 15 mm diametro; stamina maiora 2, filamentis 18-19 mm longis, leviter strigulosis, antheris ca 4.5 mm longis et 1 mm latis, anguste oblongis, minora glabra, filamentis 12 mm longis; stigma capitellatum; stylus 5 mm longus, acuto-geniculatus ca medium; ovarium angusto-ellipticum, ca 10 mm longum et 2 mm latum, sericeum, gynophoro 6 mm longo, sericeo; fructus non visus.

  • Discussion

    Although S. schunkei shows obvious affinities with the S. amplifolia complex, the former differs in the absence of the submarginal vein of the leaflets which characterizes S. amplifolia. In addition, in the new species the style is acutely geniculate about midway, although it usually becomes straight later.

  • Distribution

    (Fig. 11). Known only by the type collection from eastern Peru at low elevations (ca 100 m).

    Peru South America| Loreto Peru South America|