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| Orbea Variegata |
This is the last of the succulent prints from the Duchess of Beaufort's flowers, and it depicts what would be then a Stapelia from the Asclepiadaceae, but is now better known as Orbea variegata from the much expanded Apocynaceae. Cottesloe writes:
Frankcom painted two very different plants which he called apocynum, the cactus-like one in this picture and in another illustration a convolvulus like plant. Both, however, have the same star-like flowers differing only in size.* Apocynum is also known as dogbane, from apo, 'away' and kyon 'a dog', in other words 'keep away from dogs as it is poisonous'.** All this family have poisonous milky sap but some are treated so that they can be used for emetic and cathartic purposes. The latex of some species has also provided a substitute for rubber when for some reason the latter was not available.
This particular plant is often called the carrion plant, for it has the foetid smell of rotting flesh*** which nevertheless appears to attract insects. The five-petalled star-like flower is quite characteristic with its green centre and purple-brown spots on pale yellow. The cactus-like leaves are actually thick fleshy stems, four-angled and deeply toothed, with perhaps an incipient leaf on the ends of some. They are found in South Africa as low-growing succulents on sand and need greenhouse protection in Britain.
The flower has a curious habit of folding over its petals when an insect alights on it which is clearly seen in the flower on the left of the painting****. The insect is trapped and is probably an aid to fertilization as this plant is not recorded as a carnivorous one.
At a later date this species was given the name of Stapelia by Linnaeus after a seventeenth-century horticulturalist from Amsterdam called Van Stapel, who edited Theocrates' works. It belongs to the genus Asclepidaceae called after the god of medicine Asclepius, who was generally shown supported by Hygeia, the goddess of wise living and Panakeia, the goddess of cure-alls. It is interesting to note that curative methods of medicine today always advocate good hygiene and sometimes the use of pink pill as a panacea, so the goddesses could still be considered as supports for medicine.
*Would love to know what the plate used, this unknown "sclep" is depicted on. I have a feeling its a Hoya of some kind but star-like flowers could be anything. Only the age of its discovery will narrow it down.
** Pretty much this, its now placed in with the Oleander family of plants so if not lethally poisonous then its not the wisest to eat. The link up on the top paragraph links to the wikipedia page with its uses.
*** I used to grow this and can vouch that it does smell a bit, but unlike many of its ilk you'll need to get in close to smell it. Trust me, there are far worse smelling plants in this family.
**** No it just means that the flower has gone over. Orbea like many in this family have a massively complex means of pollination, I've heard of people using cats whiskers in order to pollinate several of these species. With seed set the plant will set out two horn like fruit which will split open to release some masses of seeds attached to cotton-like fluff.






