Horned pondweed

Zannichellia palustris

General Status Rank: 
Sensitive
ELCODE: 
PMZAN03010
Common Name: 
Horned pondweed
Scientific Name: 
Zannichellia palustris
Naming References: 
B003
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Taxonomy
Group: 
Vascular Plant
Kingdom: 
Plantae
Phylum: 
Magnoliophyta
Class: 
Monocotyledoneae
Order: 
Alismatales (Najadales)
Family: 
Potamogetonaceae (Zannichelliaceae)
References: 
B003
Habitat
shallow, fresh or mildly saline ponds or sluggish streams
References: 
B003
Distribution

Ecozones

Taiga Plains, Boreal Plains
References: 
B003
A109
H150

Distribution

0.02
Score: 
F
References: 
B003
A109

Number of Occurrences

2 collection ; sites in WBNP (B003); CAN-0; DAO-2 Canadian Museum of Nature records=CAN; Agriculture Canada, Ottawa = DAO; some duplication of records likely exists (H150).
Score: 
AB
References: 
B003
A109
H150

Area of Occupancy

Score: 
-
Threats

Threats

Score: 
C

Intrinsic Vulnerability

Score: 
-
General Status Rank
Rank: 
Sensitive
Status Rank Description: 
very specific habitat requiment, rare, no known threat. Very restricted distribution and only two localities within two ecozones (H150).
S Rank: 
S3
Decision Process Description: 
Drafted sensitive by S. Carriere based on printed information only. Agreed with by E. Haber in 2003 (H150). Modified to MAB due to very special habitat requirements by S. Carriere in 2004.; Reviewed in 2010, no change.; Reviewed in 2015 by Marilyn Anions; modified from MBAR to sensitive (more information on vulnerability)
Last Updated: 
June 25, 2015

References

Ecozones

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return
  • Cody, William J. (1998) Horned Pondweed, Zannichellia palustris (Zannichelliaceae), new to the vascular plant flora of the continental Northwest Territories, Canada, and deleted from the flora of the Yukon Territory.. Canadian Field-Naturalist 112: 711-712 - A109 Return
  • Erich Haber (2003) Personal Communication - e-mail to S. Carriere on 19/11/2003 on Subset 1 Vascular plants (Monocots except orchids). Carriere Office - e-mail archive (printed verision in GSR binders) - H150 Return

Habitat

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return

Naming

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return

Number of Occurrences

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return
  • Cody, William J. (1998) Horned Pondweed, Zannichellia palustris (Zannichelliaceae), new to the vascular plant flora of the continental Northwest Territories, Canada, and deleted from the flora of the Yukon Territory.. Canadian Field-Naturalist 112: 711-712 - A109 Return
  • Erich Haber (2003) Personal Communication - e-mail to S. Carriere on 19/11/2003 on Subset 1 Vascular plants (Monocots except orchids). Carriere Office - e-mail archive (printed verision in GSR binders) - H150 Return

Range Extent

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return
  • Cody, William J. (1998) Horned Pondweed, Zannichellia palustris (Zannichelliaceae), new to the vascular plant flora of the continental Northwest Territories, Canada, and deleted from the flora of the Yukon Territory.. Canadian Field-Naturalist 112: 711-712 - A109 Return

Taxonomy

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return