Amorphophallus mangelsdorffii is described as a species new to science and illustrated. It is closely related to A. antsingyensis as indicated by the spiny (echinate) pollen exine, and both are more closely related to each other than to the other three endemic species of Madagascar. A. mangelsdorffii differs from A. antsingyensis mainly by the small stigma, much shorter pollen exine spinulae, a reflexed and twisted spathe lamina, a much less dissected leaf blade with relatively large leaflets and, in contrast to all other Malagasy species, its flowering simultaneous with the leaf at the end of the rainy season. A key to all Malagasy species of Amorphophallus is provided.
Literature
J. Bogner
2003: Aronstabgewächse (Araceen), anmutige und vielgestaltige Exoten. — Sukkulentenwelt (Zürich) 8: 26–29. Google Scholar
A. Engler
1911:
Araceae — Lasioideae. — In:
A. Engler
(ed.),
Das Pflanzenreich 48. — Leipzig. Google Scholar
W. L. A. Hetterscheid
,
S. Ittenbach
&
J. Bogner
1999: Notes on the genus Amorphophallus (Araceae). 10. Revision of the endemic Amorphophallus species of Madagascar. — Bot. Jahrb. Syst. 121: 1–17. Google Scholar
R. Mangelsdorff
2001: “Glück im Unglück” oder der Versuch einer Expedition im Westen Madagaskars zur Regenzeit. — Pp. 112–118 in:
M. Jenny
(ed.),
Grünes Gold, Abenteuer Pflanzenjagd. — Palmengarten Sonderheft 35. Google Scholar
