Pachypodium brevicaule | |
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Scientific classification | |
Kingdom: | Plantae |
(unranked): | Angiosperms |
(unranked): | Eudicots |
(unranked): | Asterids |
Order: | Gentianales |
Family: | Apocynaceae |
Genus: | Pachypodium |
Species: | P. brevicaule |
Binomial name | |
Pachypodium brevicaule Baker |
Pachypodium brevicaule is a species of plant that belongs to the dogbane family Apocynaceae, which is now amplified by the inclusion of the milkweed family Asclepiadaceae – an important union to botanists and horticulturalists interested in the alliance succulents.
This plant is native to Madagascar, from the south of Antananarivo to the Itremo Mountains.
A flattened, tuberous, cactus-like plant with a very low trunk and a very wide, exaggerated diameter without substantive branching whatsoever with exception to several extremely short flattened "branch"-like nodes or rosettes of leaves.
Pachypodium brevicaule Baker grows in open, deciduous Western forest of Madagascar in full sun on sandstone, rarely on granite, in crevices between outcrops of quartzite. With a pH. Level varying from 3.5 to 4.5, it is strictly adapted to growing in acid substrates. (That strictness to acidity seemingly has implications to its cultivation.) It is found in the evergreen Sclerophyllous (Uapaca) woodland or savanna zones dominated by scattered woody plants. It grows at altitudes of 1250–1900 m (sometimes 2000 m).
Associated plant species, site indicators, include Pachypodium densiflorum, P. eburneum (Apocynaceae), Aloe compressa, A. capitata, (Asphodelaceae), Euphorbia quartzicola (Euphorbiaceae), (Orchidaceae), (Graminaea), (Bryophyta), and Lichenes. It occurs in a region that receives an annual rainfall of 1354 mm with a number of 5 dry months. Average monthly temperatures varies from 9 °C to 17 °C. The yearly average temperature is higher; however, at 13 °C to 18.4 °C.