Friday 24 May
Harlequin flower (Sparaxis tricolor)
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Harlequin flower fact file
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Harlequin flower description
The bright and attractive harlequin flower can be readily identified by its characteristic orange-red flowers, which have yellow and black markings in the centre (3) (5) (6). Each flower is bowl-shaped, measuring around five to eight centimetres in diameter, and has a short funnel-shaped tube at the centre, and six petal-like tepals (2) (3) (6). As in other Sparaxis species, another distinctive feature of this plant is its dry, papery floral bracts, which are pale in colour, with brown streaks (5) (6) (7). The leaves of Sparaxis species are pale green, slightly fleshy, narrow and lance-shaped, and grow in a fan from an underground storage organ known as a corm (1) (2) (3) (5) (7).
- Also known as
- wand flower, wandflower.
- Streptanthera tricolor. Top
Conservation International: Biodiversity Hotspots - Cape Floristic Region:
Biodiversity and Wine Initiative:
UNEP-WCMC: Cape Floral Region Protected Areas, Western Cape and Eastern Cape Provinces, South Africa:
- Modified leaf at the base of a flower.
- Cape Floristic Region
- An area occupying about 90,000 square kilometres in South Africa that contains an incredibly high diversity of plant species (around 8,700 species), of which 68 percent are found no where else.
- A short swollen stem, which develops at ground level or below ground and has a storage function.
- A species or taxonomic group that is only found in one particular country or geographic area.
- The offspring produced by parents of two different species or subspecies.
- A plant that normally lives for more than two seasons. After an initial period, the plant produces flowers once a year.
- The transfer of pollen grains from the stamen (male part of a flower) to the stigma (female part of a flower) of a flowering plant. This usually leads to fertilisation, the development of seeds and, eventually, a new plant.
- An animal that in the act of visiting a plant’s flowers transfers pollen grains from the stamen (male part of a flower) to the stigma (female part of a flower) of a flowering plant. This usually leads to fertilisation, the development of seeds and, eventually, a new plant.
- A type of fire-prone shrubland vegetation, characterised by a dominance of members of the daisy family. Renosterveld grows in fertile, clay-rich soils, where the annual rainfall is between 300 and 600 millimetres.
- Element of the outer part of a flower (the perianth), which includes the petals and sepals (floral leaves). The term is usually used when the segments of the perianth are undifferentiated or are indistinguishable as petals or sepals.
- Heywood, V.H. (1978) Flowering Plants of the World. Oxford University Press, Oxford.
- Ellis, B.W. (2001) Taylor’s Guide to Bulbs: How to Select and Grow 480 Species of Spring and Summer Bulbs. Houghton Mifflin Company, New York.
- Goldblatt, P., Manning, J.C. and Bernhardt, P. (2000) Adaptive radiation of pollination mechanisms in Sparaxis (Iridaceae: Ixioideae). Adansonia, 22(1): 57-70.
- 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.
- Goldblatt, P. (1992) Phylogenetic analysis of the South African genus Sparaxis (including Synnotia) (Iridaceae-Ixioideae), with two new species and a review of the genus. Annals of the Missouri Botanical Garden, 79(1): 143-159.
Goldblatt, P. (2003) Sparaxis tricolor. In: Flora of North America Editorial Committee. (Eds.) Flora of North America North of Mexico. Volume 26. Flora of North America Editorial Committee, New York and Oxford. Available at:
- Goldblatt, P. and Manning, J.C. (2008) The Iris Family: Natural History and Classification. Timber Press, Portland, Oregon.
- Goldblatt, P., Bernhardt, P. and Manning, J.C. (1998) Pollination of petaloid geophytes by monkey beetles (Scarabaeidae: Rutelinae: Hopliini) in southern Africa. Annals of the Missouri Botanical Garden, 85(2): 215-230.
- Van Kleunen, M., Nänni, I., Donaldson, J.S. and Manning, J.C. (2007) Role of beetle marks and flower colour on visitation by monkey beetles (Hopliini) in the Greater Cape Floral Region, South Africa. Annals of Botany, 100: 1483-1489.
UNEP-WCMC: Cape Floral Region Protected Areas, Western Cape and Eastern Cape Provinces, South Africa (January, 2010)
Conservation International: Biodiversity Hotspots - Cape Floristic Region (January, 2010)
- Von Staden, L. (July, 2010) Pers. comm.
Department of Water Affairs, Republic of South Africa: Working for Water (January, 2010)
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Harlequin flower biology
The harlequin flower is a perennial plant, flowering annually around September in its native range (3), or between March and April where it occurs in the United States (6). Each flower bears both male and female reproductive parts (1). The harlequin flower is pollinated by scarab beetles and tabanid flies (3) (8), with the distinctive dark markings on the flowers, known as “beetle marks”, believed to attract the beetle pollinators (7) (8) (9). As in other Sparaxis species, the fruit of the harlequin flower is a capsule containing around 24 to 30 seeds, which are spherical, hard and shiny, and generally brown in colour (1) (5) (7).Top
Harlequin flower range
The harlequin flower is endemic to the north-western Cape Province of South Africa, in a region of high plant diversity known as the Cape Floristic Region, where it is restricted to the northern end of the Bokkeveld Escarpment, northwest of Nieuwoudtville (5). The species has also been introduced to California, in the United States (6).Top
Harlequin flower habitat
Like other Sparaxis species, the harlequin flower grows in the winter-rainfall region of southern Africa, where it is found on clay soils in renosterveld (5) (7). Where it has been introduced in the United States, this species is reported to occur near gardens, dump sites and abandoned dwellings (6).Top
Harlequin flower status
Classified as Vulnerable (VU) on the Red List of South African Plants (4).Top
Harlequin flower threats
Due to their bright, colourful blooms, Sparaxis species are valued as ornamental plants, and the harlequin flower has been widely cultivated (1) (7). Many hybrids have also been created in cultivation (7), most of which are reported to derive from crosses that included this species (5). However, the impact of these practices on the wild population is unknown. Of greatest threat to the harlequin flower, as with many of South Africa’s endemic plants, is habitat loss and alteration within the unique Cape Floristic Region (10) (11). The harlequin flower’s habitat is only marginally suitable to agriculture, although some has been ploughed in the past. Three known populations are not currently declining, but habitat loss to agriculture remains a potential threat (12).Top
Harlequin flower conservation
The Cape Floristic Region of South Africa is considered a global biodiversity ‘hotspot’, and is a designated World Heritage Site and Global Centre of Plant Diversity, being home to the greatest non-tropical concentration of higher plant species in the world. The region faces many threats, but it has been intensely researched and also contains a number of National Parks and protected areas (10) (11), although none of the known populations of the harlequin flower currently occur in any of these (12). Conservation initiatives in the region include the Working for Water Programme, which is making efforts to remove alien plants, encourage regeneration of natural vegetation, and protect watersheds (11) (13). These and other measures may hopefully go some way towards helping preserve the region’s unique plants, including the beautiful harlequin flower.Top
Find out more
For more information on South African plants see:
Authenticated (06/07/10) by Lize von Staden, Red List Scientist, Threatened Species Programme, South African National Biodiversity Institute, Pretoria, South Africa.
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