Banisteriopsis velutinissima B.Gates

  • Authority

    Gates, Bronwen. 1982. Banisteriopsis, Diplopterys (Malpighiaceae). Fl. Neotrop. Monogr. 30: 1-238. (Published by NYBG Press)

  • Family

    Malpighiaceae

  • Scientific Name

    Banisteriopsis velutinissima B.Gates

  • Type

    Type. J. Revilla 650, Peru, Loreto, Prov. Maynas, Distr. Iquitos, Carretera Nanta, caserio Peña Negra, fl (holotype, MICH).

  • Description

    Latin Diagnosis - Liana, rami dense velutini, demum glabrati. Stipulae minutae. Folia petiolo 1015 mm longo, dense velutino, eglanduloso, lamina 5.5-10.1 cm longa, 3.6-8.1 cm lata, in inflorescentia minori et saepe ad bracteas redacta, elliptica vel late elliptica, basi cuneata vel truncata, apice obtusa, margine revoluta et glandibus cupularis instructa praesertim versus apicem, abaxialiter basi prope costam 2 glandibus sessilibus gerenti, adaxialiter tomento-velutina demum glabrata inter venas, abaxialiter velutina. Inflorescentia axillaris, rami usque 25 cm longi, dense velutina, folia redacta ciliata gerens, composita umbellis 4-floriferis in dichasiis dis-positis, pedunculo communi 2-4 mm longo; bracteis bracteolisque 0.5-0.8 mm longis apice rotundatis, glabratis abaxialiter, involucratis, persistentibus; pedi-cellis sessilibus, 4-9 mm longis, 0.3-0.4 mm diametro, sparsim appresso-pubes-centibus. Sepala 1.4-1.6 mm longa latave, orbicularia, apice rotundata, sparsim appresso-pubescentia vel glabrata abaxialiter, adaxialiter glabra, eglandulosa. Petala lutea, longe fimbriata, 4 lateralia inter sepala reflexa, ungue 1.5 mm longo, limbo 3.0-5.0 mm longo latove, orbiculari, 2 antero-lateralibus quam 2 postero-lateralibus majoribus et concavioribus, petalum posticum ungue erecto 2.5 mm longo, 0.4 mm lato, ad apicem constricto, limbo usque 5.5 mm longo et 3.5 mm lato, reflexo, obovato, parte angusta basali 2-3 paria laciniarum glandulosarum gerenti. Stamina filamentis 1.2-2.8 mm longis, illis 3 stylis oppositis (i.e. sepalo antico et petalis postero-lateralibus oppositis) longissimis, 3 posticis inter stylos posticos inflexis; antherae loculis glabris 0.6-0.9 mm longis, connectivis petalis et sepalis postero-lateralibus oppositis 0.3-0.6 mm longis, 0.3-0.4 mm latis, 0.1-0.2 mm profundis, oblongis, illis 3 sepalis anticis oppositis 1.1-1.4 mm longis, 0.9-1.0 mm latis, 0.7-1.0 mm profundis, obovatis, tumidis et loculos superantibus, illis sepalis antero-lateralibus oppositis 0.6-0.8 mm loculos superantibus. Ovarium 0.8 mm altum, pubescens, stylus anticus quam stylis posticis crassior, rectus erectusque, 2.2 mm longus, styli postici graciles, divergentes basi, 2.0-2.2 mm longi, stigmata truncata. Fructus non suppetunt.

  • Discussion

    Collected in flower in May and August, fruit unknown.

    The flowers of this species are almost identical to those of Banisteriopsis martiniana, but the species is readily distinguished by its velutinous pubescence throughout. This feature is unique in this group of species.

  • Distribution

    Known only from two collections near Iquitos in lowland Peru.

    Peru South America| Loreto Peru South America|