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Erect Burhead (Echinodorus berteroi)

Need a main photo for this plant


Life history

Species overview

Erect Burhead (Echinodorus berteroi), , is found in shallow water of ponds and swamps. Blooming occurs early July through late August; fruiting occurs early August through late September. The optimal identification period for this species is early August through late September.

Synonyms: Alisma berteroi, Echinodorus berteroi var. lanceolatus, E. rostratus, E. rostratus f. lanceolatus, E. rostratus var. lanceolatus

Identification

  • Distinguishing characteristics: In the Echinodorus genus this is the only species found in Wisconsin. Echinodorus may be distinguished from other genera in the Alismataceae family such as Alisma (water plantain) and Sagittaria (arrowhead) by its fruits, which are arranged in globose heads (vs. flat-topped rings) and its achenes, which are conspicously ridged.
  • Flower characteristics: Petals white, broadly ovate, 5 to 10 mm; stamens 9 to 12+; anthers 0.5 to 0.8 mm.
  • Fruit characteristics: Achenes 40+, brown, 3 to 7 mm thick, echinate in profile, each side of the achene with 5 arching ribs, 2 of them wing-like and alternating with the others, the keel entire.
  • Leaf characteristics: Erect with long petioles, basally cordate blade mostly 4 to 20 cm long by 2 to 12 cm wide.

Phenology

  • Blooming phenology: early July through late August
  • Fruiting phenology: early August through late September
  • Optimum time to identify: early August through late September

Other

  • Growth form: Aquatic forb-emergent
  • Vegetative reproduction:
  • Life cycle: Annual
  • Comments: Associated Species: Not recorded for Wisconsin specimens.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

Erect Burhead (Echinodorus berteroi) is on the "watch list." Watch list species have experienced, or are believed to have experienced, a statewide or range wide decline, but they are not currently tracked in the Natural Heritage Inventory (NHI) database. The watch list includes newly discovered species for which origin and rarity need to be determined, certain animals designated as Species of Greatest Conservation Need (SGCN) in the Wisconsin Wildlife Action Plan, and species that were tracked in the past but proved more abundant, widespread or less vulnerable than previously thought. Although watch list species are not actively tracked by NHI, occurrences documented during surveys are often stored by NHI, as these species could be tracked in the future if there is further evidence of their decline.


Summary Information
State Statusnone
Federal Status in Wisconsinnone
State RankSH
Global RankG5
Tracked by NHIW

Habitats and landscapes

The Natural Heritage Inventory has developed scores indicating the degree to which each of Wisconsin's rare plant species is associated with a particular natural community or ecological landscape. This information is similar to that found in the Wildlife Action Plan for animals. As this is a work in progress, we welcome your suggestions and feedback.

General habitat information

  • Habitat description: Found in shallow water of ponds and swamps.
  • Soils: Wet, sandy soils.

Natural communities

This table lists the natural communities that are associated with Erect Burhead. Scores for natural community associations are: "significant" association (score=3), "moderate association" (score=2) or the species can be present but is only weakly associated with the community (score=1).

Natural communities score

Ecological landscapes

This table lists the ecological landscape association scores for Erect Burhead. The scores (3=High, 2=Moderate, 1=Low, 0=None) also correspond to the map.

Map of the Ecological Landscapes of Wisconsin.

Ecological landscape score

Species guidance

The Endangered Resources Program has developed avoidance measures and management guidelines for plants on the Natural Heritage Working List. These are a work in progress, and we welcome your suggestions and feedback. Sources used in developing this information can be found here.

Avoidance measures

These are specific actions designed to avoid "take" (mortality) of this species.

  • Avoid known individual plant locations and conduct operations elsewhere when they are least likely to cause damage. Ideally, this would involve frozen, snow-covered ground. However, in areas of the state where frozen conditions are unreliable, very dry soils late in the growing season might be the best available alternative. Consult with a biologist, if needed.
  • Avoid broadcast spraying of herbicides; use care with spot spraying.

Management guidance

Management guidelines are additional considerations that may help maintain or enhance habitat for this species

  • Follow BMPs, especially around streams and use care near ravines, steep slopes, cliffs, rock outcrops, etc.
  • Minimize disturbance to hydrology, including soil disturbance from rutting.

Photos


Erect Burhead  Photo.

Specimen scanned by the Wisconsin Herbarium, Madison, WI.

Scanned specimen courtesy of Wisconsin Herbarium


Support for Wisconsin's rare plant information has been provided by the Division of Forestry, the Endangered Resources Fund and the Wisconsin Rare Plant Preservation Fund. To donate, visit the Natural Resources Foundation of Wisconsin [exit DNR].

Last revised: Tuesday, November 28, 2017
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