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This species is accepted, and its native range is Ecuador to Bolivia and Brazil (Acre).
A specimen from Kew's Herbarium

[KBu]

Goyder, D., & J. Fontella-Pereira. (2005). Notes on Oxypetalum R. Br. (Apocynaceae: Asclepiadoideae) in Bolivia and Peru. Kew Bulletin, 60(1), 95-101. Retrieved from http://www.jstor.org/stable/4110888

Conservation
Data Deficient.
Distribution
Known from a handful of collections from the western margins of the Amazon basin.
Ecology
Alt. 200 - 650 m. Primary forest on steep slope.
Morphology General
Latex white
Morphology General Habit
Perennial herbaceous vine with stems twining to c. 6 m over other vegetation
Morphology Leaves
Leaves with petiole 1.5 - 2(- 6) cm long, densely pubescent; lamina 4.5 - 6(- 10) x 2.5 - 4.5(- 6.5) cm, broadly ovate, apex attenuate, base deeply cordate with rounded basal auricles, pubescent on both surfaces but more densely beneath
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings c. 0.5 mm long
Morphology Reproductive morphology Flowers Calyx
Calyx lobes 1.5 - 2 mm long, linear to narrowly triangular, densely pubescent
Morphology Reproductive morphology Flowers Corolla
Corolla yellow-green or pale yellow, pubescent outside, adaxial face minutely but densely pubescent; tube campanulate, 2 - 2.5 mm long; lobes 10 - 13 x c. 1 mm, narrowly oblong, somewhat truncate apically, spreading and somewhat contorted
Morphology Reproductive morphology Flowers Corona
Corona pale yellow with purplish base, gynostegial in origin, but fused to both the base of the staminal column and the lower part of the corolla tube, the free lobes c. 2.5 mm long, well exserted from the mouth of the corolla tube, fleshy or somewhat dorsoventrally compressed, narrowly oblong in outline, with a somewhat truncate apex and a minute tooth on the inner face
Morphology Reproductive morphology Flowers Pollinarium
Corpusculum c. 0.6 x 0.15 mm, flattened, brown; translator arms c. 0.1 mm long, flattened and with a conspicuous tooth; pollinia c. 0.2 x 0.1 mm, flattened, elliptic. Stylar head slender, extending 3- 4 mm beyond the anthers, bifid in upper half, purple.
Morphology Reproductive morphology Inflorescences
Inflorescences extra-axillary with 2 - 5 flowers in a shortly pedunculate cluster; peduncle to 2 cm long, densely pubescent; bracts 0.5 - 1 mm long, linear, densely pubescent; pedicels very slender, 1.5 - 2.5 cm long, pubescent
Morphology Stem
Stems minutely but densely pubescent with short spreading white hairs
Note
Oxypetalum flavopurpureum shares some characters with O. balansae Malme and the O. cordifolium (Vent.) Schltr. complex, such as the tooth or lump on the inner face of the corona and the basic geometry of the pollinarium with a laminar corpusculum which is somewhat recurved towards the margins; the translator arms held at an angle of c. 450 to the plane of the corpusculum with a membranous portion linked to the conspicuous teeth - but these characters also occur in other parts of the genus. The long corolla lobes are similar to those of the O. cordifolium group, while the minutely but densely pubescent adaxial face of the corolla is similar to that of O. balansae. The narrowly oblong rather than truncate-spathulate corona lobes are unique, however, and the huge disparity in size between the pollinia and the corpusculum is unusual, although similar proportions occur in the very much larger pollinarium of O. cordifolium subsp. mexiae Fontella & Goyder (Fontella-Pereira et al. 2005, this volume). The specific epithet derives from determinations made by P. C. Standley on two of the Peruvian collections - Klug 3078 bears the name Oxypetalum flavopurpureum Schltr. while Klug 3976 was determined as O. flavopurpureum Schum. We have found no record of either name in the literature but the epithet probably derives from the colour of the flower - the yellow corolla contrasting with the purple stylar head.
Type
Bolivia. Santa Cruz, Prov. Ibañez, Los Espejillos, by path to waterfalls, 14 April 1996, J. R. I. Wood 11002 (holotypus K; isotypus LPB).

Native to:

Bolivia, Brazil North, Ecuador, Peru

Oxypetalum flavopurpureum Goyder & Fontella appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 12, 2005 Wood, J.R.I. [11002], Bolivia 61557.000 Unknown type material
Jan 1, 2005 Ule, E. [9525], Brazil K000096223
Wood, J. R. I. [11002], Bolivia K000196854 holotype

First published in Kew Bull. 60: 97 (2005)

Accepted by

  • Farinaccio, M.A. & Goyder, D. (2016). A synopsis of Oxypetalum (Apocynaceae) in Bolivia, with the description of one new species and a key to species in Bolivia Phytotaxa 267: 16-28.

Literature

Kew Bulletin

  • --- & Schwarz, E. de A. (1981). Contribuição ao estudo das Asclepiadaceae Brasileiras, XVI. Novos sinônimos e uma nova combinação. Bradea 3 (22): 159-163.
  • ---, Hatschbach, G. & Hartmann, R. W. (1985). Contribuição ao estudo das Asclepiadaceae do Paraná III. Notas preliminares. Bol. Mus. Bot. Mun. Curitiba 64: 1 - 47.
  • ---, Valente, M. da C, Marquete, N. F. da S. & Ichaso, C. L. F. (2004). Apocináceae-Asclepiadoideas. In: R. Reitz & A. Reis (eds.), Flora Ilustrada Catarinense, Monografia - Asclepiadáceas, 1 - 250.
  • Dorr, L. J. (1992). The vascular plant collections of R. S. Williams from Bolivia and Peru (1901 - 1902). Brittonia 43: 211-239.
  • Dubs, B. (1998). Prodromus florae Matogrossensis, part I. Checklist of Angiosperms, part II. Types from Mato Grosso. Betrona-Verlag.
  • Ezcurra, C. (1999). Asclepiadaceae. In: F. O. Zuloaga & O. Morrone (eds), Catálogo de las plantas vasculares de la República Argentina II: 78 - 98. Missouri Botanical Garden Press.
  • Fontella-Pereira, J., Goyder, D. J. & Marquete F. da Silva, N. (2005). Infraspecific variation in Oxypetalum cordifolium (Vent.) Schltr. (Apocynaceae- Asdepiadoideae). Kew Bull. 60: 103 - 109.
  • Goyder, D. J. (2004a). The identities of Corollonema Schltr., Dactylostelma Schltr. and Metoxypetalum Morillo (Apocynaceaer. Asclepiadoideae). Kew Bull. 59: 301 - 303.
  • Lillo, M. (1919). Las Asclepiadáceas argentinas. Physis (Buenos Aires) 4: 410 - 437.
  • Malme, G. O. A. (1900). Die Asclepiadaceen des Regnell'schen Herbars. Kongl. Svenska Vetensk. Acad. Handl. 34 (7): 1-101.
  • Meyer, T. (1943). Revisión de las especies Argentinas del género Oxypetalum (Asclepiadaceae). Lilloa 9: 5 -72.
  • Navarro, G. (2002). Provincia biogeográfica Boliviano-Tucumana. In: G. Navarro & M. Maldonado, Geografía ecológica de Bolivia: vegetación y ambientes acuáticos: 349-451. Centro de Ecología Simón I. Patiño, Cochabamba.
  • Occhioni, P. (1971). Duas novas especies de Oxypetalum para a flora do Brasil. Leandra 1(1): 7 - 11.
  • Rivas-Martínez, S. & Navarro, G. (2002). Mapa biogeográfico de América del Sur. In: G. Navarro & M. Maldonado, Geografía ecológica de Bolivia: vegetación y ambientes acuáticos. Fig. I. 14, pp. 42 - 43. Centro de Ecología Simón I. Patiño, Cochabamba.
  • Rusby, H. H. (1912). New species from Bolivia, collected by R. S. Williams - 2. Bull. New York Bot. Gard. 8:89-135.
  • Schlechter, R. (1906). Asclepiadaceae andinae. In: I. Urban, Plantae novae andinae imprimir Weberbauerianae. II. Bot. Jahrb. Syst. 37: 601 - 627.
  • — (1927). Descriptions of new genera and species of plants collected on the Mulford Biological Exploration of the Amazon Valley, 1921 - 1922. Mem. New York Bot. Gard. 7: 205 - 387.
  • — (1944). Asclepiadaceae. In: H. R. Descole (ed.), Genera et species plantarum argentinarum 2: 1 - 273 & 121 plates.
  • — (1957). Contribuciones a la flora fanerogamica Argentina. I. Dos arboles nuevos para la flora Argentina. Bol. Soc. Argent. Bot. 7: 12-16.
  • — (2004b). An amplified concept of Philibertia Kunth (Apocynaceae: Asclepiadoideae), with a synopsis of the genus. Kew Bull. 59: 415 - 451.

Kew Backbone Distributions

  • Farinaccio, M.A. & Goyder, D. (2016). A synopsis of Oxypetalum (Apocynaceae) in Bolivia, with the description of one new species and a key to species in Bolivia Phytotaxa 267: 16-28.

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Bulletin
Kew Bulletin
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0