Drosera anglica

Huds.

English Sundew

G5Secure Found in 100 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.161038
Element CodePDDRO02010
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderNepenthales
FamilyDroseraceae
GenusDrosera
Synonyms
Drosera longifoliaL.
Other Common Names
Droséra d'Angleterre (FR) English sundew (EN) Great Sundew (EN) Oblong-leaved Sundew (EN)
Concept Reference
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Rank MethodExpertise without calculation
Review Date2016-05-16
Change Date1984-04-24
Edition Date1995-04-12
Edition AuthorsK. Crowley, MRO
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences81 to >300
Rank Reasons
Drosera anglica has a scattered distribution over a very broad range. It occurs in fragile bog and fen habitats in remote areas.
Range Extent Comments
Eurasia and Alaska to California, east to Idaho, Wyoming, and the Great Lakes.
Occurrences Comments
Drosera anglica is a circumpolar species with many occurrences, especially in Canada. Occurs at 3 sites in Maine, 10 (post-1950) in Michigan, 30 in Minnesota, 6 in Wyoming, and 47 in Saskatchewan.
Threat Impact Comments
The primary threat to Drosera anglica is the loss of peatland habitat through drainage or peat mining. Logging and trampling by visitors can also damage populations of this species.
Ecology & Habitat

Description

English Sundew is a perennial herb with a rosette of basal leaves and unbranched, leafless stems that are 6-18 cm high and which arise from a simple rootcrown. The leaves have stalks that are 2-8 cm long; leaves have narrowly oblong blades that are 1-3 cm long and 3-5 mm wide and covered on the upper surfaces with reddish, stalked glands that trap insects. 2-7 short-stalked flowers are borne on one side of the top of the stem. Each flower has a 5-lobed calyx that is 5-6 mm long and 5 separate, oblong, white petals that are longer than the calyx. There are 5 stamens and 4-5 styles, which are divided more than half their length. The fruit is a many-seeded capsule, and seeds are at least 1 mm long.

Diagnostic Characteristics

The leaf blades of Drosera rotundifolia are about as long as they are wide. D. linearis has narrow leaf blades, but the seeds are less than 1 mm long. A hand lens or microscope will be required to measure the seeds.

From CNHP Wetland Guide 2012: Main Characteristics:
·Leaves 15-35 mm long, oblanceolate, ascending to erect
·Flowers white

Habitat

Drosera anglica occurs in sunny, very wet, and weakly acidic or calcareous bogs and fens. It often appears in shallow pools in the minerotrophic water tracks of patterned peatlands.
Palustrine Habitats
HERBACEOUS WETLANDBog/fen
Other Nations (2)
CanadaN5
ProvinceRankNative
ManitobaS3Yes
New BrunswickS1Yes
NunavutS2Yes
QuebecS5Yes
LabradorS4Yes
AlbertaS4Yes
OntarioS5Yes
Northwest TerritoriesS4Yes
SaskatchewanS3Yes
Yukon TerritoryS4Yes
British ColumbiaS5Yes
Island of NewfoundlandS3Yes
United StatesNNR
ProvinceRankNative
MaineS1Yes
WyomingS3Yes
New JerseySNRYes
CaliforniaS2Yes
OregonSNRYes
MinnesotaS3Yes
IdahoSNRYes
MichiganS3Yes
AlaskaSNRYes
HawaiiSNRYes
MontanaS3Yes
ColoradoS1Yes
WisconsinS1Yes
WashingtonSNRYes
Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (100)
Alaska (47)
AreaForestAcres
Bering LakeChugach National Forest965,076
Boston BarChugach National Forest53,617
CarrollTongass National Forest11,366
Central WrangellTongass National Forest13,397
ChichagofTongass National Forest555,858
Chilkat-West Lynn CanalTongass National Forest199,772
Chugach-12Chugach National Forest8,116
Chugach-13Chugach National Forest13,337
ClevelandTongass National Forest189,447
College FiordChugach National Forest1,130,818
Copper River WetlandsChugach National Forest85,972
East MitkofTongass National Forest8,795
EudoraTongass National Forest195,022
Fidalgo-GravinaChugach National Forest257,968
Five MileTongass National Forest19,459
Freshwater BayTongass National Forest44,933
Game CreekTongass National Forest54,469
GravinaTongass National Forest37,381
HardingTongass National Forest174,349
Hoonah SoundTongass National Forest79,764
Johnson PassChugach National Forest152,508
KartaTongass National Forest52,117
Kenai LakeChugach National Forest213,172
Kenai MountainsChugach National Forest306,600
LindenbergTongass National Forest25,855
MadanTongass National Forest68,553
MontagueChugach National Forest204,875
Neka BayTongass National Forest7,142
Neka MountainTongass National Forest6,138
Nellie JuanChugach National Forest713,697
North ClevelandTongass National Forest105,288
North KruzofTongass National Forest33,146
North RevillaTongass National Forest215,430
North WrangellTongass National Forest8,091
Prince William Sound Is.Chugach National Forest118,698
QuartzTongass National Forest143,003
ResurrectionChugach National Forest224,615
RevillaTongass National Forest29,298
RhineTongass National Forest23,010
Roaded DonutChugach National Forest968
SarkarTongass National Forest51,908
Sheridan GlacierChugach National Forest224,683
Soda BayTongass National Forest78,091
South RevillaTongass National Forest52,105
Taku-SnettishamTongass National Forest664,928
Twenty MileChugach National Forest198,775
West WrangellTongass National Forest10,291
California (8)
AreaForestAcres
Box CampKlamath National Forest858
Castle PeakTahoe National Forest14,974
Chips CreekLassen National Forest29,089
Chips CreekPlumas National Forest12,940
ParsnipModoc National Forest8,485
ProspectLassen National Forest4,078
Tom MartinKlamath National Forest9,031
Trail LakeLassen National Forest1,124
Idaho (2)
AreaForestAcres
Peace RockBoise National Forest191,734
SeceshPayette National Forest248,088
Montana (17)
AreaForestAcres
Allan Mountain (01946)Bitterroot National Forest104,184
Anderson MountainBeaverhead-Deerlodge National Forest31,501
Bear - Marshall - Scapegoat - SwanLolo National Forest118,485
Bear - Marshall - Scapegoat - SwanLewis and Clark National Forest344,022
Bear - Marshall - Scapegoat - SwanHelena National Forest51,360
Beaver LakeBeaverhead-Deerlodge National Forest11,863
Buckhorn Ridge (MT)Kootenai National Forest34,716
Cabinet Face East #671Kootenai National Forest50,326
Continental Divide National Scenic TrailBitterroot National Forest312
Marshall PeakLolo National Forest9,069
North Big HoleBeaverhead-Deerlodge National Forest52,227
Scotchman Peaks (MT)Kootenai National Forest53,909
Silver KingBeaverhead-Deerlodge National Forest64,289
Stony MountainBitterroot National Forest44,057
Stony MountainLolo National Forest32,796
Tolan Creek (x1070)Bitterroot National Forest7,090
West Big HoleBeaverhead-Deerlodge National Forest133,563
Oregon (13)
AreaForestAcres
Echo MountainWillamette National Forest8,098
French Pete (a)Willamette National Forest1,668
Lake ForkWallowa-Whitman National Forest21,936
Maiden PeakDeschutes National Forest26,432
Maiden PeakWillamette National Forest9,627
Mt. BaileyUmpqua National Forest18,401
SherwoodUmpqua National Forest2,449
Sky Lakes AWinema National Forest3,940
WaldoDeschutes National Forest4,973
Waldo - FujiWillamette National Forest15,273
Waldo - LakeWillamette National Forest2,993
Waldo - Salmon CreekWillamette National Forest3,195
West - South BachelorDeschutes National Forest25,994
Washington (11)
AreaForestAcres
Big Lava BedGifford Pinchot National Forest19,043
Dark DivideGifford Pinchot National Forest52,483
Dry Canyon BreaksColville National Forest4,821
EntiatWenatchee National Forest72,617
Grassy TopIdaho Panhandle National Forests13,485
Harvey CreekColville National Forest10,140
HorseshoeGifford Pinchot National Forest7,579
Liberty BellOkanogan National Forest108,495
Rock CreekWenatchee National Forest32,239
Salmo - Priest BColville National Forest11,869
SawtoothOkanogan National Forest122,194
Wyoming (2)
AreaForestAcres
Rock CreekMedicine Bow-Routt National Forest18,874
Snowy RangeMedicine Bow-Routt National Forest29,660
References (3)
  1. Coffin, B., and L. Pfannmuller, editors. 1988. Minnesota's endangered flora and fauna. University of Minnesota Press, Minneapolis, Minnesota. 473 pp.
  2. Flora of North America Editorial Committee (FNA). 2015. Flora of North America north of Mexico. Vol. 6. Magnoliophyta: Cucurbitaceae to Droserceae. Oxford University Press, New York. 496 pp + xxiv.
  3. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.