Drosera whittakeri
Encyclopedia
Drosera whittakeri is a sundew
Sundew
Drosera, commonly known as the sundews, comprise one of the largest genera of carnivorous plants, with at least 194 species. These members of the family Droseraceae lure, capture, and digest insects using stalked mucilaginous glands covering their leaf surface. The insects are used to supplement...

 that is native to South Australia
South Australia
South Australia is a state of Australia in the southern central part of the country. It covers some of the most arid parts of the continent; with a total land area of , it is the fourth largest of Australia's six states and two territories.South Australia shares borders with all of the mainland...

.

Description

Plants are 4 to 8 cm in diameter, with broadly spathulate leaves arranged in a rosette. These may be green, orange-yellow or red in colour and are 10 to 15 mm long and 9 to 13 mm wide. Up to 20 white flowers are produced overall, with multiple flowers open at any one time. The main flowering period is May to November in its native range, but flowers may appear throughout the year.

Taxonomy

The species was formally described by Jules Émile Planchon
Jules Émile Planchon
Jules Émile Planchon was a French botanist born in Ganges, Hérault.-Biography:After receiving his Doctorate of Science at the University of Montpellier in 1844, he worked for a while at the Royal Botanical Gardens in London, and for a few years was a teacher in Nancy and Ghent...

 in Annales des Sciences Naturelles in 1848 as Drosera "Whittakerii". The species was named after Derbyshire
Derbyshire
Derbyshire is a county in the East Midlands of England. A substantial portion of the Peak District National Park lies within Derbyshire. The northern part of Derbyshire overlaps with the Pennines, a famous chain of hills and mountains. The county contains within its boundary of approx...

 botanist Joseph Whittaker
Joseph Whittaker (botanist)
Joseph Whittaker was a British Botanist who visited South Australia in 1839. Whittaker has 300 plants from that trip in Kew Gardens and 2,200 pressed British plants in Derby Museum and Art Gallery.-Early Days:...

.
Two subspecies are recognised by some authorities:
  • Drosera whittakeri subsp. aberrans Lowrie & Carlquist
  • Drosera whittakeri Planch. subsp. whittakeri


In 2008, Allen Lowrie
Allen Lowrie
Allen Lowrie is a West Australian botanist. He is living in Duncraig, a Perth suburb, is married and has two daughters.Lowrie, originally a businessman and inventor, got in contact with the carnivorous flora of western Australia in the late sixties and worked on it as an amateur...

 and John G. Conran elevated the former to species status, as Drosera aberrans
Drosera aberrans
Drosera aberrans is a perennial tuberous species in the genus Drosera that is native to New South Wales, South Australia, and Victoria. It grows in a rosette 3 to 5 cm in diameter with green, orange-yellow, or red leaves. It is native to southern inland South Australia, southern and central...

. The authors also argue that Drosera praefolia
Drosera praefolia
Drosera praefolia is a perennial tuberous species in the genus Drosera that is endemic to South Australia. It grows in a rosette 4 to 6 cm in diameter with green or sometimes red leaves. It is native to south-east South Australia from the southern Fleurieu Peninsula south to Kangaroo Island....

should be considered a distinct species, rather than a synonym of D. whittakeri.
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