Drosera anglica - Huds.
English Sundew
Other English Common Names: Great Sundew, Oblong-leaved Sundew
Other Common Names: English sundew
Synonym(s): Drosera longifolia L.
Taxonomic Status: Accepted
Related ITIS Name(s): Drosera anglica Huds. (TSN 22018)
French Common Names: droséra d'Angleterre
Unique Identifier: ELEMENT_GLOBAL.2.161038
Element Code: PDDRO02010
Informal Taxonomy: Plants, Vascular - Flowering Plants - Other flowering plants
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Nepenthales Droseraceae Drosera
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Concept Reference
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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.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Drosera anglica
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 16May2016
Global Status Last Changed: 24Apr1984
Ranking Methodology Used: Ranked by inspection
Rounded Global Status: G5 - Secure
Reasons: Drosera anglica has a scattered distribution over a very broad range. It occurs in fragile bog and fen habitats in remote areas.
Nation: United States
National Status: NNR
Nation: Canada
National Status: N5 (07Mar2012)

U.S. & Canada State/Province Status
United States Alaska (SNR), California (S2), Colorado (S1), Hawaii (SNR), Idaho (SNR), Maine (S1), Michigan (S3), Minnesota (S3), Montana (S3), New Jersey (SNR), Oregon (SNR), Washington (SNR), Wisconsin (S1), Wyoming (S3)
Canada Alberta (S3), British Columbia (S4), Labrador (S5), Manitoba (S3), New Brunswick (S1), Newfoundland Island (S5), Northwest Territories (SNR), Nunavut (SU), Ontario (S5), Quebec (S3S4), Saskatchewan (S3), Yukon Territory (S2S3)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Eurasia and Alaska to California, east to Idaho, Wyoming, and the Great Lakes.

Number of Occurrences: 81 to >300
Number of 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.

Overall 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.

Short-term Trend: Relatively Stable (<=10% change)
Short-term Trend Comments: This species seems stable at the moment because it occurs in remote peatlands.

Intrinsic Vulnerability Comments: Susceptible to loss of habitat.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Eurasia and Alaska to California, east to Idaho, Wyoming, and the Great Lakes.

U.S. States and Canadian Provinces
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States AK, CA, CO, HI, ID, ME, MI, MN, MT, NJ, OR, WA, WI, WY
Canada AB, BC, LB, MB, NB, NF, NT, NU, ON, QC, SK, YT

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CA Butte (06007), Lassen (06035), Nevada (06057), Plumas (06063), Shasta (06089), Siskiyou (06093)*
CO La Plata (08067), San Juan (08111)
ME Aroostook (23003)
MI Charlevoix (26029)*, Cheboygan (26031)*, Chippewa (26033), Emmet (26047)*, Keweenaw (26083), Livingston (26093), Luce (26095), Oakland (26125)*, Presque Isle (26141), Schoolcraft (26153)
MN Becker (27005), Beltrami (27007), Clearwater (27029), Itasca (27061), Koochiching (27071), Lake (27075), Lake of the Woods (27077), Mahnomen (27087), Roseau (27135), St. Louis (27137)
MT Flathead (30029), Granite (30039), Lake (30047), Lewis and Clark (30049), Lincoln (30053), Madison (30057)*, Missoula (30063), Park (30067), Powell (30077), Ravalli (30081), Sanders (30089)
WI Ashland (55003), Bayfield (55007)*
WY Park (56029), Sheridan (56033), Teton (56039)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
01 Upper St. John (01010001)+, Mattawamkeag (01020003)+
04 Baptism-Brule (04010101)+, St. Louis (04010201)+, Beartrap-Nemadji (04010301)+*, Bad-Montreal (04010302)+, Keweenaw Peninsula (04020103)+, Betsy-Chocolay (04020201)+, Boardman-Charlevoix (04060105)+*, Manistique (04060106)+, Lone Lake-Ocqueoc (04070003)+, Cheboygan (04070004)+*, Clinton (04090003)+*, Huron (04090005)+
09 Eastern Wild Rice (09020108)+, Red Lakes (09020302)+, Clearwater (09020305)+, Roseau (09020314)+, Rainy Headwaters (09030001)+, Vermilion (09030002)+, Little Fork (09030005)+, Big Fork (09030006)+, Rapid (09030007)+, Lower Rainy (09030008)+, Lake of the Woods (09030009)+
10 Madison (10020007)+, Gallatin (10020008)+*, Yellowstone Headwaters (10070001)+, Clarks Fork Yellowstone (10070006)+, Upper Tongue (10090101)+
14 Animas (14080104)+
16 Truckee (16050102)+
17 Upper Kootenai (17010101)+, Flint-Rock (17010202)+, Blackfoot (17010203)+, Bitterroot (17010205)+, North Fork Flathead (17010206)+, Middle Fork Flathead (17010207)+, South Fork Flathead (17010209)+, Swan (17010211)+, Lower Clark Fork (17010213)+, Snake headwaters (17040101)+, Upper Henrys (17040202)+, Lower Henrys (17040203)+
18 Scott (18010208)+*, Upper Pit (18020002)+, Lower Pit (18020003)+, North Fork Feather (18020121)+, Butte Creek (18020158)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: English sundew; Sundew family (Droseraceae). An herbaceous, annual-to-perennial, insectivorous plant. Grows in a rosette of small, erect, oval leaves covered with small hairs.
General 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.
Technical Description: From CNHP Wetland Guide 2012: Perennial herb, insectivorous; leaves in a basal rosette, spreading to erect, upper surfaces and margins bearing gland-tipped, sticky hairs, and sensitive bristles when triggered causing the enclosure of the prey by folding of the blade, sessile glands secrete digestive enzymes; flowers small, perfect, actinomorphic, borne in a scorpioid cyme; petals 4-5 white or pink, sepals 4-5, distinct; stamens usually 5, distinct or basally connate; fruit a capsule.

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 Comments: 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.
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 12Apr1995
NatureServe Conservation Status Factors Author: K. Crowley, MRO
Element Ecology & Life History Edition Date: 21Oct1994
Element Ecology & Life History Author(s): JM

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
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