Practical ecological knowledge for the temperate reader.

Drosera Sp. - Sundew

Family: Droseraceae (Sundew) [E-flora]

"Habit: Annual, perennial herb, often +- brown or +- red. Leaf: petiole long; adaxial blade hairs gland-tipped. Inflorescence: raceme-like cyme. Flower: sepals, petals, stamens generally 5; petals white, pink, or purple; styles, placentas, valves generally 3. Species In Genus: 170+ species: range of family. Etymology: (Greek: dewy) Note: Insects and other organisms trapped by sticky fluid secreted by leaf glands are secured by leaf folding around them and digested by bacteria as well as additional leaf secretions (enzymes, ribonucleases), providing nutrition; many cultivated and/or non-native taxa, not all documented by specimens, persisting in NCo (Mendocino Co., including Drosera tracyi Macfarl.), northern SNH (Plumas Co.) after reported, ill-advised plantings." [Jepson]

Local Species;


Drosera anglica - Great sundew 

"Habitat / Range Swamps, bogs, fens, wet meadows and lakeshores in the lowland, steppe and montane zones; frequent in S BC, rare northward; circumpolar, N to AK, YT and NT, E to NF and S to MI, WI, ID, NV and N CA; Eurasia, Hawaii." [IFBC-E-flora]

Status: Native [E-flora]



Drosera rotundifolia - Round-leaved Sundew 

Subtaxa Present in B.C.;

"Drosera rotundifolia is an evergreen Perennial growing to 0.1 m (0ft 4in) by 0.1 m (0ft 4in) at a slow rate. It is hardy to zone (UK) 6. It is in leaf all year, in flower from July to August. The species is hermaphrodite (has both male and female organs). The plant is self-fertile. Suitable for: light (sandy) and medium (loamy) soils and can grow in nutritionally poor soil. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very acid soils. It cannot grow in the shade. It prefers moist or wet soil." [PFAF]

Habitat / Range "Swamps, bogs, fens, wet meadows and lakeshores in the lowland, steppe and montane zones; common along the coast, less frequent elsewhere in BC; circumpolar, N to AK, YT and NT, E to NF and S to MN, AL, FL, NV and CA; Greenland, Iceland, Eurasia." [IFBC-E-flora]

Ecological Indicator Information "A very shade-intolerant, submontane to subalpine, circumpolar forb (transcontinental in North America). Occurs on wet to very wet. nitrogen-poor soils (Mor humus forms) within boreal, cool temperate, and cool mesothermal climates. Sporadic in non-forested. semi-terrestrial communities on water-collecting sites amidst Sphagnum species in peat bogs. An oxylophytic species characteristic of nutrient­poor wetlands." (Information applies to coastal locations only) [IPBC-E-flora]

Status: Native [E-flora]


"Use with caution[21]. Internal use of this herb causes a harmless colouring of the urine[9]." [PFAF]

Edible Uses

Other Uses

Medicinal Uses


Drosera x obovata - Hybrid sundew 

Status: Native [E-flora]


Page last modified on Monday, January 10, 2022 5:04 AM