Illinois Natural History Survey - University of Illinois

Stuckenia pectinata
Taxonomy

Synonyms: Potamogeton pectinatus, Sago pondweed

Subspecific taxa:

Classification:

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

Species Distribution
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County Map Legend
Absent:
Not known from county
Medium confidence:
Medium or unknown confidence;
often old records or unverifiable observations
Medium-high confidence:
Often observations by expert botanists
High confidence:
Often vouchered herbarium records
Planted / introduced:
Native species introduced outside historic range,
or only in planted locations within county (e.g., restorations)
Historic / extirpated:
Only historic records for the species; likely extirpated
(Note that this category is not yet functional)

North American distribution maps for this species: FLNAUSDA PlantsBONAPBISON

Collection & Observation Phenology [?]

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F
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M
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A
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M
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J
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A
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S
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O
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N
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D
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Collection & Observation Timeline [?]

Species Status

Status/Listing: No Information

Notes:

Origin: Native

Species Description

General: Monocot, perennial

Roots: adventitious, rhizomes, tubers

Shoots: alternate leaf arrangment; simple leaf type; entire leaf margin; Parallel leaf venation; awl-shaped leaf shape

Inflorescence: spike

Flowers: perfect; incomplete, not petals, not sepals; hypogynous ovary position

Fruit: achene

Physiology: autotrophic; C3 C02 fixation

Ecology & Natural History

Habitat: Hard, clear water; water may be fresh, marl, alkali, brackish from one and one half to eight inches deep; also in sloughs.

ILPIN Notes: 1, 11. The seeds of this species have important food value for marshbirds and shore- birds. Its tubers, copiously produced, are an important duck food. Aquatic furbearers, especially muskrats, use this species as food also. It is also a good species cover for fish. Seeds-plant, in fall at a rate of 40 lbs per acre at one and one half intervals tubers-late spring or fall at 100 tubers per acre at one and one half inch intervals. All leaves submerged; stem branched from nearly every node above. Spike of several loose whorls of flowers. Stipules united with leaf bases, forming a sheath.

Functional Relationships:

Human Relationships:

  • Edibility [?] : yes
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value: waterfowl: yes; aquatic species: yes
  • Cover Value: aquatic species: good

Coefficient of Conservatism (C-value) [?] :

  • Entire State: 5
  • Chicago Area: 5

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