Trisha Shetty (Editor)

Sterculia murex

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Sterculia murex httpsuploadwikimediaorgwikipediacommonsthu

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Sterculia alexandri, Sterculia guttata, Sterculia balanghas, Sterculia villosa

Sterculia murex or lowveld chestnut is a southern African tree with a very limited distribution in the lowveld of eastern Mpumalanga and Swaziland. After S. alexandri it is the most southern representative of the genus in Africa. Kew currently recognises some 92 species of Sterculia, confined to the tropics and slightly beyond at low altitudes.

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Habit

First described by the botanist William Botting Hemsley in 1894, this species grows to about 10 metres in height with a trunk of some 30 cm in diameter covered in thick, greyish-brown bark, becoming almost black with age, and cracking in a rectangular pattern. Its unusual spiny fruits and palmately compound leaves make this an easily identifiable tree. It was illustrated by Cythna Letty in Flowering Plants of South Africa, vol. 32, plate no. 1279.

Fruit

Five carpels are joined, forming the spokes of a wheel some 30 cm in diameter. They are woody and densely studded with hard, blunt spines, dehiscing on one side to reveal large (25 mm long), black seeds, which are rich in oil and, after roasting, are a valuable food source. Stinging hairs, common in the Malvaceae, coat the interior of the carpels and these may irritate skin and eyes. The carpels have a superficial resemblance to the Northern Hemisphere Chestnut.

References

Sterculia murex Wikipedia


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