Tinkturenpresse

Cucumis metuliferus E.Mey. ex Naudin - syn.Cucumis tinneanus Kotschy & Peyr. - Cucurbitaceae
kiwano, (African) horned melon, Horngurke, Hornmelone

Annual climbing plant, native to Central and South Africa, cultivated and naturalized elsewhere; fruit with horn-like spines (hence the name), yellow-orange skin and lime green, jelly-like flesh.
Kiwano is also a trademark name of horned melon registered by New Zealand growers. The pulp can be eaten raw including the seeds.

„Along with the Gemsbok cucumber (Acanthosicyos naudinianus) and Tsamma (Citrillus lanatus) it is one of the few sources of water during the dry season in the Kalahari Desert.“
http://en.wikipedia.org/wiki/Cucumis_metuliferus

„The ellipsoid fruit is bright yellow-reddish orange in color when mature and shaped like a short stout cucumber with many blunt thorns on its surface. These seeds are embedded in the mesocarp which is emerald green and consists of juicy, bland-tasting tissue.“
http://www.hort.purdue.edu/newcrop/CropFactSheets/kiwano.html

Curtis’s Botanical Magazine, vol.137 [ser.4, vol.7], t.8385 (1911) [M.Smith]
http://plantgenera.org/species.php?id_species=297327