Illinois Natural History Survey - University of Illinois

Zosterella dubia
Water star-grass
Taxonomy

Synonyms: Heteranthera dubia

Subspecific taxa:

Classification:

Other taxonomic & nomenclature sources: USDA Plants;  ITIS;  The Plant List;  IPNI

Species Distribution
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More about map & occurrence records

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: FLNA;  USDA Plants;  BONAP;  BISON

Collections, Observations & Flowering by Month [?]

J
0
F
0
M
0
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

Collections & Observations by Decade [?]

Species Status

Status/Listing: No Information

Notes:

Origin: Native

Species Description

General: Monocot, perennial

Roots: adventitious, rhizomes

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

Inflorescence: solitary

Flowers: perfect; 3 merous; regular; yellow; hypogynous ovary position

Fruit: achene

Physiology: autotrophic

Reproduction: sexual, vegetative

Ecology & Natural History

Habitat: Sloughs, roots in muddy gravel or sand beds near shallower margins and banks; deep, swift and still waters; local on mudflats along streams and ponds, often as a "stranded" aquatic.

ILPIN Notes: Eaten by wildlife. Leaves olive or dull green, distinguished from Potamogeton by complete absence of leaf midribs.

Functional Relationships:

  • Pollinators:
  • Dispersal:
  • Mycorrhizae:
  • N2 fixation:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

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

  • Entire State: 7
  • Chicago Area: 8

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