Illinois Natural History Survey - University of Illinois

Eleocharis parvula
Dwarf spike rush
Taxonomy

Synonyms:

Subspecific taxa:

Classification:

  • Magnoliophyta
    • Liliopsida

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: Formerly State Endangered

Notes:This species was formerly considered an Endangered native species, but was subsequently determined to have been possibly accidentally introduced ti IL, it is at the periphery of its range here and is native elsewhere in North America

Origin: Native

Species Description

General: Monocot, perennial, annual

Roots: adventitious, stolons, tubers

Shoots: alternate leaf arrangment; simple leaf type; entire leaf margin; Parallel leaf venation; hastate leaf shape

Inflorescence: head, other

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

Fruit: achene

Physiology: autotrophic; C3 C02 fixation

Reproduction: sexual, vegetative

Ecology & Natural History

Habitat:

ILPIN Notes: Densly tufted; spikelets ovoid, somewhat flattened; scales ovate absent leaves reduced to bladeless sheaths minutely triangular tubercle; achene trigonous; bristles occasionally

Functional Relationships:

  • Pollinators: wind
  • Dispersal: water, wind
  • Mycorrhizae: no
  • N2 fixation:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

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

  • Entire State:
  • Chicago Area:

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