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Geissorhiza radians
Also called White Ring Wine Cups, Wine Cup
Geissorhiza radians or winecup flower, is a highly threatened species from the Iris family with fewer than 10 remaining sub-populations growing in south-western Cape Town, South Africa. The deep purple flowers with large, red centres grow in dense colonies, which makes for a spectacular flower display from mid-September, particularly around the town of Darling. Its seasonally wet lowlands habitat is, however, becoming increasingly threatened, with more than 80% of its original habitat now permanently transformed into agriculture or urban sprawl and the remaining populations threatened by encroaching invasive alien vegetation and fertilizer runoff. The dark-centred flowers aim to attract specific pollinators from the horsefly family (Tabanidae), but the specific interactions still require additional investigation. Each plant has 1 to 6 flowers.
The plant normally starts to flower after 3 years after being planted, they can be grown from a pot or lawn if sufficient moisture is provided. It might be hard to buy this plant since it is rare.
Blue satin flower · Blackanther Satin · Geissorhiza monanthos · Pink Satin · Blue Pride Of Nieuwoudtville · Satinflowers
Text excerpted from the Wikipedia article Geissorhiza radians by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
