Tabernaemontana pachysiphon Stapf

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Photo: Jos Stevens
Ferme Randu, southwest Katanga Province, DRC

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Synonyms:	Conopharyngia angolensis (Stapf) Stapf Conopharyngia cumminsii Stapf Conopharyngia holstii (K.Schum.) Stapf Conopharyngia pachysiphon (Stapf) Stapf Tabernaemontana angolensis Stapf Tabernaemontana holstii K. Schum. Tabernaemontana pachysiphon Stapf var. cumminsii (Stapf) H. Huber Voacanga dichotoma K. Schum.
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Description:	Shrub or small tree. Bark pale brown, shallowly to deeply fissured, with large lenticels. Leaves opposite, broadly to narrowly elliptic, 10-50 cm long, thickly leathery, hairless on both surfaces; margin entire and more or less rolled under; petiole 6-19 mm long, hairless. Inflorescences mostly long-pedunculate, erect, fairly laxly few-many-flowered. Corolla, white with a pale green tube and often with a pale yellow throat; tube 18-40 mm, almost cylindric, 5-angular, slightly twisted; lobes more or less falcate. 14-50 mm long, wavy at the margins. Fruit of paired, obliquely subglobose mericarps, 7-15 cm in diameter, pale glaucous, often dotted, with an indented suture but probably indehiscent.
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Worldwide distribution:	Widespread in tropical Africa as far South as Angola, Zambia and Malawi.
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Literature:	Höft, M.G. (1995). Aut-ecological studies on Tabernaemontana pachysiphon Stapf and Rauvolfia mombasiana Stapf (Apocynaceae) in the Shimba Hills (Kenya) with special reference to their alkaloid content. Bayreuther Forum Ökologie 17 Leeuwenberg, A.J.M. & Kupicha, F.K. et al. (1985). Apocynaceae Flora Zambesiaca 7(2) Pages 440 - 442. (Includes a picture).

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Flora of Burundi: Tabernaemontana pachysiphon
Flora of Malawi: Tabernaemontana pachysiphon
Flora of Zambia: Tabernaemontana pachysiphon

External websites:

African Plants: A Photo Guide (Senckenberg): Tabernaemontana pachysiphon
BHL (Biodiversity Heritage Library): Tabernaemontana pachysiphon
EOL (Encyclopedia of Life): Tabernaemontana pachysiphon
GBIF (Global Biodiversity Information Facility): Tabernaemontana pachysiphon
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iNaturalist: Tabernaemontana pachysiphon
IPNI (International Plant Names Index): Tabernaemontana pachysiphon
JSTOR Plant Science: Tabernaemontana pachysiphon
Mansfeld World Database of Agricultural and Horticultural Crops: Tabernaemontana pachysiphon
Plants of the World Online: Tabernaemontana pachysiphon
Tropicos: Tabernaemontana pachysiphon
Wikipedia: Tabernaemontana pachysiphon