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Pachypodium inopinatum (Apocynaceae), a new species from Madagascar

, : Pachypodium inopinatum (Apocynaceae), a new species from Madagascar. Cactus and Succulent Journal 68(4): 171-176

P. inopinatum was discovered in 1993 in a remote area of central Madagascar. Differences between this species and P. rosulatum, which also occurs on the island, are described. Plants are highly succulent with a swollen, cylindrical, smooth, grey main stem to 35 cm tall and 25-40 cm in diameter and with up to ~250 leaf rosettes. The inflorescences have 2-5 flowers and these have an ivory-coloured corolla and corolla lobes which are 20-22 mm long.

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Related references

Lavranos, J.J.; Rapanarivo, S.H.J.V., 1997: New discoveries in Pachypodium (Apocynaceae) from Madagascar. The botany, morphology, habitat and taxonomy of P. eburneum and P. bicolor, collected from Madagascar, are presented.

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Luthy, J., 2005: Pachypodium mikea: a new arborescent species from Madagascar. The morphology, distribution, ecology and etymology of Pachypodium mikea sp. nov. is discussed. A taxonomic key is also provided. Comparative data on the stem, spines, leaves, inflorescence, flower, fruit and seed characteristics (colour and shape...

Rapanarivo, S.H.J.V., 1999: Pachypodium (Apocynaceae). This thesis is a monograph on Pachypodium, which genus includes habits ranging from trees to dwarf (non-woody) plants with a short stems. It includes in the first section, as its major part, a taxonomic revision of Pachypodium (Series of revisions...

Goyder, D., 1990: Pachypodium rosulatum var. gracilius, Apocynaceae. Brief notes on the botanical history and cultivation of this succulent from Madagascar, together with a full botanical description.

Burge, D.O.; Mugford, K.; Hastings, A.P.; Agrawal, A.A., 2013: Phylogeny of the plant genus Pachypodium (Apocynaceae). Background. The genus Pachypodium contains 21 species of succulent, generally spinescent shrubs and trees found in southern Africa and Madagascar. Pachypodium has diversified mostly into arid and semi-arid habitats of Madagascar, and has been cite...

Codd, Le, 1983: Apocynaceae: the correct author citation for Pachypodium succulentum. Bothalia 14(2): 219

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Markgraf, F., 1972: Species and new combinations of Apocynaceae from Madagascar. III. Adansonia 2 (2) 217-222

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