Swartzia stipellata 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 stipellata R.S.Cowan

  • Type

    Type collection. A. Ducke 1336 (holotype US 2248068; isotypes A, F, MG, NY, R), Rio Branco, Brazil, Sept. 20, 1943.

  • Description

    Latin Diagnosis - Arbor parva vel arbuscula ad 5 m alta, ramulis strigosis sed mod glabrescentibus; stipulae persistentes lineares, 4-6 mm longae, strigulosae sed glabrescentes; folia unifoliolata, petiolis 3.5-8 mm longis submarginatis et ad apicem stipellatis, stipellis 1.5-2 mm longis, strigosis et glabrescentibus, petiolulis 1-2 mm longis, strigosis sed glabrescentibus, laminis 11-17 cm longis, 5-7.5 cm latis, ellipticis ad late ovalibus, basi rotundatis obtusis, apice acutis ad acuminatis glabris, costa venisque conspicuis plus minusve salientibus faciebus ambobus; inflorescentiae 4-8.5 cm longae, axillares, axe dense strigoso, 1.5-8.5 cm longo, bracteis persistentibus, 1.5-2.5 mm longis, dense strigosis, bracteolis persistentibus, 1.5-2.5 mm longis, lineari-lanceolatis vel anguste triangulari-lanceolatis, externe strigosis; pedicelli 8-14 mm longi, strigosi; alabastra globosa, ca 8 mm diametro, dense stri-gosa ad basim, versum apicem parce strigosis vel glabris; calycis segmenta 4, per-sistentia, externe plus minusve strigosa intus glabra; petalum album, externe villoso-strigosum intus glabrum, unguiculo ca 6 mm longo, lamina rotundata, ca 15.5 mm diametro; stamina maiora 4 filamentis glabris, antheris oblongo-ovalibus, ca 2 mm longis et 1 mm latis, staminibus minoribus glabris, filamentis ca 9.5 mm longis, antheris ovalibus, ca 1 mm longis; gynoecium glabrum, stigmate obtuso, stylo ca 6 mm longo, ovario ca 7 mm longo et 2.5 mm lato, gynophoro 10 mm longo; fructus ovalis, 20-22 mm longus, 11-14 mm latus, stylo persistente 5 mm longo, glaber, carpophoro 15-16 mm longo.

  • Discussion

    This resembles to some degree S. pendula which has foliaceous stipules, bracts, and bracteoles, and mucronate anthers. There is also some resemblance to S. conferta which, like the other relatives, has mucronate anthers. There is little doubt that these are the nearest relatives, but the affinity is not very close. It may be more nearly related to S. oblonga which has differently shaped leaflets and less prominent stipels.

  • Distribution

    (Fig. 44). Restricted to the north-central part of the Amazon Basin in Brazil, in forest along the rivers or along smaller streams in savanna.

    Brazil South America| Amazonas Brazil South America|