Round-leaved Sundew
Scientific name: Drosera rotundifolia L.
Diagnostic features
Inflorescences to 10(25)cm, the peduncles straight and arising centrally as in Drosera anglica.
Leaves (incl. petiole) up to 5cm, the blades ± orbicular, up to 10 x 10mm.
Chromosome number: 2n=20.
Habitat
Native; wet acid peaty places with little shade.
Distribution
In suitable places over most of British Isles, often common in North & West but absent from much of Central, East & South England.
This species is keyed out on Page 3780: Droseraceae, Drosera in the Text Key.
Hybrids
- Drosera x obovata Mert. & W.D.J. Koch (= Drosera rotundifolia x Drosera anglica) is similar to Drosera intermedia in leaf characters but has a straight, centrally arising inflorescence and is sterile; it is rare but has scattered records over much of West Britain and Ireland, especially Northwest Scotland.
- Drosera x belezeana E.G. Camus (= Drosera rotundifolia x Drosera intermedia) has a leaf-shape closer to that of Drosera rotundifolia but curved, lateral inflorescences and is sterile; it has been recorded in South Hants, West Norfolk and Cards. |
