| Harveya purpurea | |
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| Plate from Hooker’s Icones Plantarum | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Orobanchaceae |
| Genus: | Harveya |
| Species: | H. purpurea |
| Binomial name | |
| Harveya purpurea Harv. | |
| Synonyms | |
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Harveya purpurea is an annual herb with large, showy flowers and scale-like leaves, parasitic on the roots of shrubs and trees, endemic to South Africa in the Eastern and Western Cape. It occurs from the Cederberg to the Cape Peninsula, and along the coastal belt to Grahamstown in the Eastern Cape, mainly among fynbos, on stony slopes and sandy flats.
Harveya species are native to Africa, Madagascar, and Yemen. This species is holoparasitic, that is, entirely nonphotosynthetic, with a preference for members of the Campanulaceae such as Roella and Wahlenbergia. The disabling of the photosynthesis gene has happened independently several times in Scrophulariales.
References
- http://www.theplantlist.org/tpl1.1/record/tro-29203638
- https://plants.jstor.org/compilation/harveya.purpurea?searchUri=
- http://redlist.sanbi.org/species.php?species=1072-17
- 'Parasitic flowering plants' - Henning Heide-Jørgensen
- Wolfe, A. D; Depamphilis, C. W (1998). "The effect of relaxed functional constraints on the photosynthetic gene rbcL in photosynthetic and nonphotosynthetic parasitic plants". Molecular Biology and Evolution. 15 (10): 1243–58. doi:10.1093/oxfordjournals.molbev.a025853. PMID 9787431.
- Randle, C. P; Wolfe, A. D (2005). "The evolution and expression of RBCL in holoparasitic sister-genera Harveya and Hyobanche (Orobanchaceae)". American Journal of Botany. 92 (9): 1575–85. doi:10.3732/ajb.92.9.1575. PMID 21646175.
External links
| Taxon identifiers | |
|---|---|
| Harveya purpurea | |