January 2016


the old picture – Ceropegia tristis

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c.tristis.ibpe

Ceropegia tristis Hutchinson = Ceropegia distincta var. haygarthii Schltr.

Depiction from: ‘I. B. Pole-Evans: Flowering plants of South Africa. Vol. 2. England; Reeve & Co. 1922’

(This image is in the public domain because its copyright has expired.)

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A new locality for Ceropegia oculata?

These photos were taken by  N.S. Dungriyal, the field director of the Satpura Tiger Reserve, they show a plant that I would identify as Ceropegia oculata Hook..

The flowers are quite similar to nearly identical to a special form of the species, that had been described in 2005 as a distinct variety: Ceropegia oculata var. satpudensis Punekar, S. D. Jagtap & Deokule, this has now been reduced to synonymy with the nominate race.

If my identification turns out to be correct, then this find would probably represent a new locality for this species, since it obviously is known only from Maharashtra so far – as far as I know.

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Photos: N.S. Dungriyal; by courtesy of N.S. Dungriyal

Ceropegia sp. ‘Satpura Tiger Reserve’

These plants were photographed in the Satpura Tiger Reserve in the Hoshangabad District of Madhya Pradesh / India, it bears some similarities to Ceropegia angustifolia Wight or Ceropegia hirsuta Wight & Arnott, yet appears to be distinct from both of them.

There appears to be a climbing form (last photo) and a non-climbing form (first two photos).

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Photos: N.S. Dungriyal; by courtesy of N.S. Dungriyal

Ceropegia sp. ‘Nimba Mountains’

This plant was photographed in 2012 on the Nimba Mountains (lowland area to NE, near Gbakoré, adjacent to Cavally River) in Guinea.

This may be a member of the species group around Ceropegia campanulata G. Don, however, its flower does not resemble any of the Ceropegia flowers known to me.

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The upright-growing grassland species are not well known and are in need of a revision.

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Photos: Peter B. Phillipson

(under creative commons licence (3.0))
http://creativecommons.org/licenses/by-nc-nd/3.0

Ceropegia sp. ‘Malawi’ = Ceropegia achtenii

This plant was photographed at the Natures Gift Farm; Lilonge / Malawi, it appears to be a new species, which has also been recognized as such and will probably soon (sooner or later) be described.

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Photo: Günter Baumann

http://www.africanplants.senckenberg.de

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EDIT: The plant was identified by Mike Gilbert as Ceropegia achtenii De Wild..

photo of the week – Ceropegia distincta or Ceropegia lugardae

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37.c.mb

Photo: Mike Bingham; by courtesy of Mike Bingham

http://www.zambiaflora.com

Parasites and parasitism

Of course the leaves of Ceropegia are consumed by different kinds of insects, yet there appear not to be much information of such cases, but an example is given in O. A. Leistner’s “Flora of Southern Africa”, 1980.:

“It is difficult to get complete specimens with seed, flowers and leaves, as the last are usually stung by some fly and drop off when the maggots hatch.”

(source: H. R. Brownlee in 1935 while studying Ceropegia plant material) [1]

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The fruit fly species Dacus apoxanthus Bezzi (family Tephritidae) is known to parasitize the flower buds of Ceropegia ampliata E. Mey., resulting in the flower buds becoming translucent, and in the flowers wilting thereafter. [2]

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I hope that there will be more studies to come.

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References:

[1] O. A. Leistner: Flora of Southern Africa 27(4). Botanical Research Institute, Dept. of Agricultural Technical Services 1980
[2] Gareth Coombs; Anthony P. Dold; Craig I. Peter: Generealized fly-pollination in Ceropegia ampliata (Apocynaceae – Asclepiadoideae): teh role of trapping hairs in pollen export and receipt. Plant Systematics and Evolution 296(1): 137-148. 2011

photo of the week – Ceropegia humbertii

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Photo: Ehoarn Bidault

(under creative commons license (3.0))
http://creativecommons.org/licenses/by-nc-sa/3.0

photo of the week – Ceropegia affinis

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24.c.mb

Photo: Mike Bingham; by courtesy of Mike Bingham

http://www.zambiaflora.com

photo of the week – Ceropegia distincta or Ceropegia lugardae

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33.c.mb

Photo: Mike Bingham; by courtesy of Mike Bingham

http://www.zambiaflora.com

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