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Origin and Habitat: Avonia recurvata is endemic to a small distribution area near Kakamas (from Stcinkopf in Namaqualand to Pofadder) in the Northern Cape, South Africa. All the subspecies lying south-east of the Orange River in the Northern Cape from the south-east of the Richtersveld southwards into Namaqualand. It is the the most widespread member of its genus.
Habitat and ecology: Avonia recurvata is small highly specialized plant that grows in full sun on high quartz ridges and slopes in arid conditions. The unique white scales reflect much of the light and act as sun-shades over the tiny leaves beneath. Whole plants mimic bird droppings or the white rocks in which they frequently grow and have been regarded as "mimicry plants", for long escaping the eyes of even the most attentive field workers. They can thrive in areas where grazing goats have cropped almost everything else into none xistence. It is possible potential predators do not recognize avonias as a suitable food, or perhaps the plants simply are unpalatable. Avonia recurvata is not considered to be threatened in its habitat early in the twenty first century.
Avonia recurvata (Schönland) G.D.Rowley
Bradleya 12(prepr.): 112 1994
Avonia recurvata subs. buderiana (Poelln.) G.Will.
Aloe 35(1): 22 (1998)
- Avonia recurvata subs. buderiana (Poelln.) G.Will.
Avonia recurvata subs. minuta (Gerbaulet) G.D.Rowley
Bradleya 12: 112 (1994)
Description: Avonia recurvata (Anacampseros recurvata subsp. recurvata), is a branching dwarf succulent, growing trailing or sub-erect white-shingled stems to 8 cm in length that arise from a tuberous rootstock (caudex). The leaf covering stipules are silvery-white, overlapping, scale-like but loosely positioned over the tiny leaves and adpressed to the stems. They give the plant an untidy, characteristic papery appearance. In the typical plants the scale tips are turned outwards. Flowers are white, scented with about 15 stamens.
Rootock (Caudex): Tuberously thickened, storing water.
Branch stems: Up to 80 mm long, erect or semi-erect completely covered by their spirally arranged leaves and about 4 mm in diameter. Both main and lateral branches are few.
Leaves: Semiterete, 1 mm long, 2 mm wide, lower surface convex, covered by lanceolate stipular scales about 3 mm long, laxly arranged, partly exposing the leaf-tips, with a yellowish-green median line, scale tips when curving outwards giving the stem a shaggy appearance; axillary hairs are present. In the typical plants the scale tips are turned outwards with a light green median nerve.
Flowers: Scented with about 15 stamens. The beige-brown withered flower remains from the previous season can be seen on the bigger stems of the plant.
Similar species. Avonia recurvata, Avonia meyeri and Avonia ruschii. None of these or many of the others species are easy to identify, partly because of the many intermediate forms to be found. Some species are fairly distinct, others intergrade, as in the series Avonia albissima, Avonia papyracea, Avonia buderiana, Avonia recurvata and further into Avonia meyeri. A number of species will have to be dropped, or be reduced to varietal status, and the genus certainly needs some systematic cleansing.
Subspecies, varieties, forms and cultivars of plants belonging to the Avonia recurvata group
- Avonia recurvata (Schönland) G.D.Rowley: In the typical plants the scale tips are turned outwards. Distribution: from Stcinkopf in Namaqualand to Pofadder, In the typical plants the scale tips are turned outwards
- Avonia recurvata subs. buderiana (Poelln.) G.Will.: The scale tips are turned inwards and the middle line is inconspicuous or missing. Distribution: This subspecies grows in a small part of the Richtersveld (Hellskloof).
- Avonia recurvata subs. minuta (Gerbaulet) G.D.Rowley: The scale apex turns outwards and the scale has a broad yellow middle line. Distribution: Bushmanland west of Kakamas (Maraisvlei).
Bibliography: Major references and further lectures
1) Hilton-Taylor, C. 1996. “Red data list of southern African plants”. Strelitzia 4. South African National Botanical Institute, Pretoria.
2) Raimondo, D., von Staden, L., Foden, W., Victor, J.E., Helme, N.A., Turner, R.C., Kamundi, D.A. and Manyama, P.A. 2009. “Red List of South African Plants”. Strelitzia 25. South African National Biodiversity Institute, Pretoria.
3) Snijman, D.A. 2013. “Plants of the Greater Cape Floristic Region 2: The extra Cape flora.” Strelitzia 30. South African National Biodiversity Institute, Pretoria.
4) Burgoyne, P.M., Williamson, G. & Potter, L. 2005. Anacampseros recurvata Schönland subsp. recurvata. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/06/13
5) Doreen Court “Succulent Flora of Southern Africa” CRC Press, 01 June 2000
6) Hermann Jacobsen “A Handbook of Succulent Plants: Descriptions, Synonyms, and Cultural Details for Succulents Other Than Cactaceae, Volume 1” Blandford Press, 1960
7) Urs Eggli “Illustrated Handbook of Succulent Plants: Dicotyledons” Springer Science & Business Media, 2002
8) Cactus and Succulent Journal, 77:1-6, 15, 2005
9) The Bulletin of the African Succulent Plant Society, Volumi 5-6 African Succulent Plant Society., 1970
10) Judd Kirkel “Anacampseros recurvata subsp. recurvata” in Operation wild flowers. web: http://www.operationwildflower.org.za/index.php/albums/succulents/avonia-recurvata-subsp-recurvata-judd-1-2410
Avonia recurvata Photo by: © Plantemania
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Cultivation and Propagation: Though Avonias come from the winter rain-fall region, they can all be trained to grow in summer.
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