African Plant Database

Anchomanes difformis (Blume) Engl.
Family : ARACEAE
Information on the genus : Anchomanes
Basionym : Amorphophallus difformis Blume
Status for TA : accepted (present)
Synonym(s) Homotypic
 Amorphophallus difformis Blume
Synonym(s) Heterotypic
=Anchomanes difformis var. obtusus (A. Chev.) Knecht
=Anchomanes obtusus A. Chev. (1909)
=Anchomanes welwitschii Rendle (1899)
=Anchomanes dalzielii N.E. Br. (1913)
=Anchomanes dubius Schott (1860)
=Pythonium hookeri Kunth (1841)
=Anchomanes hookeri (Kunth) Schott (1853)
=Anchomanes difformis var. pallidus (Hook.) Hepper
=Anchomanes hookeri var. pallidus Hook. (1863)
Ecology and distribution
Trop. Afr.
Biology : Tuber horizontal, massively thickened, to 50-80 cm long, 6-20 cm Ø, with distinctive annular leaf-base scars; leaf petiole 0,8-3 m long, 1-4 cm Ø, dark to purplish-green with whitish speckling with prickles whitish-green 2-3 mm long; blade to 1,5 m wide, dark green, leaflets fishtail-shaped, ultimate leaf-lobes to 20x10-13 cm, dark green; peduncle 0,5-1,8 m long, 0,6-1 cm Ø, markings similar to petiole, smooth to prickly; spathe oblong-ovate, 14-30-90x3-5 cm, acuminate, green, greenish to purplish-brown or brick red; spadix subcylindric, 10-30 cm long, shorter than spathe; berries oblong-ellipsoid, red to purplish or white, 0,9-2x0,8-1 cm.
Ecology : Rain-forest with Chrysophyllum albidum, Cola gigantea, Erythrophleum suaveolens, Alstonia boonei, Parinari excelsa, Milicia excelsa; rain-forest with Mapania rhynchocarpa; riverine forest, gallery; rocky wooded places; wooded places near the banks of rivulets; dembo; open forest; termite mounds; wooded savanna with Isoberlinia tomentosa, Sterculia tragacantha; muhulu on sand near open forest edge; semi-deciduous forest; secondary forest, regrowth; swampy, dense dry-forest; cacao plantations; way sides; savanna often under shade; screes; 1-1600 m alt.
  Flowers are needed to separate A. difformis (predominantly western) from A. abbreviatus (E Africa); herbarium specimens often lack flowers.
  Anchomanes welwitschii is sometimes treated as distinct from A. difformis (see, e.g., Bull. Jard. Bot. Natl. Belg. 67: 298, 1999).

Bibliography for Tropical Africa :
  • Darbyshire, I. Kordofami, M. & al. (2015). The plants of Sudan and south Sudan, An annoted checklist. Kew Publishing
More info on :
see under Jstor_African Plant Initiative
see under chg
see under Flore d'Afrique Centrale
see under Fgui
see under African Plants - a Photo Guide
carte afrique num 33490
Record n°33490 modified 2007-04-02
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