Berkheya
| Berkheya | |
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| Berkheya sp. | |
| Scientific classification | |
| Kingdom: | |
| (unranked): | |
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| Genus: | Berkheya |
| Species | |
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about 75 | |
Berkheya is a genus of flowering plants in the aster family, Asteraceae, and the subfamily Carduoideae, the thistles. It is distributed in tropical Africa, especially in southern regions.[1] Of about 75 species, 71 can be found in South Africa.[2]
Most species have yellow ray florets, a few have white, and B. purpurea has light purple or mauve florets.[1]
B. purpurea is cultivated as an ornamental plant.[1] Some Berkheya are known as weeds.[3]
The genus was named in honor of the Dutch scientist and artist Johannes le Francq van Berkhey.[4]
Berkheya are associated with a variety of weevils in the genus Larinus. The tephritid fruit fly Urophora agromyzella is also found on the plants.[3]
Species
- Berkheya acanthopoda
- Berkheya angusta
- Berkheya angustifolia
- Berkheya annectens – thistle-thorn
- Berkheya armata
- Berkheya barbata
- Berkheya bergiana
- Berkheya bipinnatifida
- Berkheya caffra
- Berkheya canescens
- Berkheya cardopatifolia
- Berkheya carduoides
- Berkheya carlinifolia
- Berkheya carlinoides
- Berkheya carlinopsis
- Berkheya chamaepeuce
- Berkheya cirsiifolia
- Berkheya coddii
- Berkheya coriacea
- Berkheya cruciata
- Berkheya cuneata
- Berkheya debilis
- Berkheya decurrens
- Berkheya densifolia
- Berkheya discolor
- Berkheya draco
- Berkheya dregei
- Berkheya echinacea
- Berkheya eriobasis
- Berkheya erysithales
- Berkheya ferox
- Berkheya francisci
- Berkheya fruticosa
- Berkheya glabrata – yellow thistle
- Berkheya griquana
- Berkheya herbacea
- Berkheya heterophylla
- Berkheya insignis
- Berkheya latifolia
- Berkheya leucaugeta
- Berkheya mackenii
- Berkheya macrocephala
- Berkheya maritima
- Berkheya montana
- Berkheya multijuga
- Berkheya nivea
- Berkheya onobromoides
- Berkheya onopordifolia
- Berkheya pannosa
- Berkheya pauciflora
- Berkheya pinnatifida
- Berkheya purpurea – purple berkheya
- Berkheya radula
- Berkheya radyeri
- Berkheya rhapontica
- Berkheya rigida – Augusta thistle, Hamelin thistle
- Berkheya robusta
- Berkheya rosulata
- Berkheya seminivea
- Berkheya setifera
- Berkheya speciosa
- Berkheya sphaerocephala
- Berkheya spinosa
- Berkheya spinosissima
- Berkheya subulata
- Berkheya tysonii
- Berkheya umbellata
- Berkheya viscosa
- Berkheya zeyheri
Gallery
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References
- ^ a b c Hind, N. (2006). 568. Berkheya purpurea. Curtis's Botanical Magazine 23(4), 289-96.
- ^ Funk, V. A. and R. Chan. (2008). Phylogeny of the spiny African daisies (Compositae, tribe Arctotideae, subtribe Gorteriinae) based on trnL-F, ndhF, and ITS sequence data. Molecular Phylogenetics and Evolution 48(1), 47-60.
- ^ a b Clark, M. M. A comparison between the flower-head insect communities of South African Berkheya and European Cynareae. In: Proceedings of the VIII International Symposium on Biological Control of Weeds. (pp. 165-170). Istituto Sperimentale per la Vegetale, Ministero dell'Agricoltura e delle Foreste. 1990.
- ^ Quattrocchi, Umberto (2017). CRC World Dictionary of Plant Names: Common Names, Scientific Names, Eponyms, Synonyms, and Etymology. Routledge.
- ^ Berkheya. The Plant List.
- ^ Species listing: Berkheya. Red List of South African Plants. South African National Biodiversity Institute (SANBI).
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