Swartzia krukovii 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 krukovii R.S.Cowan

  • Type

    Type collection. B. A. Krukoff 8937 (holotype US 2248074; isotypes BR, K, LE, S, U), basin of Belem Creek, Municip. São Paulo de Olivença, Amazonas, Brazil, Oct. -Dec. 1936.

  • Description

    Latin Diagnosis - Arbuscula vel arbor 8-16 m alta, trunco 7.5-15 cm diametro, ramulis micro-strigulosis; stipulae deciduae vel persistentes triangulares ad lineari-lanceolatae, 0.8-2 mm longae, ca 1 mm latae vel angustiores, acutae glabrae; petioli 8-11 (-26) mm longi, microstrigulosi teretes; rhaches 14-27 cm longae, teretes, microstngu-losae; foliola 4-6-jugata, petiolulis 5-8 mm longis, microstrigulosis sed glabres-centibus, jugorum inferiorum laminis minoribus, 5.5-9.5 cm longis, 2.5-4 cm latis, elliptico-ovatis ad ovatis vel lanceolatis, laminis jugorum reliquorum plerumque ellipticis aliquando ovato-ellipticis, 10-17 cm longis, 3-6.5 cm latis, laminis omnibus caudato-acuminatis basi acutis ad rotundato-obtusis, supra glabris nitidisque infra plus minusve brunneis et microstrigulosis, supra costa impressa et venis primariisplanis infra ambobus salientibus; inflorescentiae racemosae vel paniculato-racemosae axillares, 6-11 cm longae, axe micro-striguloso, bracteis persistentibus, ca 1.5 mm longis et 1 mm latis, triangularibus extus microstrigulosis, bracteolis persistentibus supra medium nascentibus, 1-1.5 mm longis, lineari-lanceolatis extus microstrigulosis; pedicelli 5-6 mm longi, microstrigulosi; alabastra globosa, 6-7 mm diametro, microstrigulosa; calycis segmenta 4 vel 5, mox decidua intus glabra extus micro-strigulosa; petalum luteum glabrum, unguiculo 3.5-4 mm longo, lamina rotundata basi truncata, 8-9 mm diametro; stamina maiora 6-8 glabra, filamentis ca 10 mm longis, antheris ovalibus, ca 1.3 mm longis, minora glabra, ca 8 mm longa; gynoecium glabrum, stylo 0.5-1 mm longo, ovario arcuato fusiformi, 5-5.5 mm longo, ca 1.5 mm lato gynophoro 10-12 mm longo; fructus non visus.

  • Discussion

    The material cited above is so similar superficially to S. discocarpa that there can scarcely be real doubt of its affinity to that species. It differs by its smaller flowers, shorter gynophore, rather differently shaped leaflets, and by the externally pubescent calyx segments. There is also notable relationship to S. recurva, but the latter has the calyx densely pubescent on the inner surface, foliaceous stipules, and fewer pairs of leaflets per leaf.

  • Distribution

    (Fig. 20). Upper Amazon Basin in northwestern Brazil.

    Brazil South America| Amazonas Brazil South America|