Characteristics
Monocots
Eleocharis macrostachya Britton
Large Spike Rush
graminoid
7
**
Native
G5 (Global Rank)
Armaments
No
Base Flower Color
Brown (incl. Maroon); Green
Carpel Number/Pistil
2; 15
Duration
Perennial
Fruit Complexity
Simple
Fruit Dehiscence
No
Fruit Type
Achene
Fruit Wet/Dry
Dry
General Ecology
Terrestrial; Mudflat/Wet Woods
Growth Habit
graminoid
Inflorescence Position
terminal
Inflorescence Types
spike
Leaf Arrangement
absent
Leaf Complexity
simple
Leaf Dissection
0
Leaf Duration
deciduous
Leaf Fragrance
No
Leaf Notes
Leaves two per culm, but reduced to sheaths, mucro, or awn (no blade)
Leaf Type
sheath with scale
Leaf Venation
parallel
Leaflet Number
0
Moisture Requirements
Hydric
Ovary Position
Superior
Ovules per Carpel
1
Parent Rock
Calcareous; Limestone
Perianth Present
No
Pistil Complexity
Compound
Pistil Number
1
Placentation Type
Basal
Soil Composition
Mineral
Soil pH
Alkaline
Unconsolidated Rock
Yes
Woody Herbaceous
Herbaceous
Classification
Species Distribution Map
This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display its name.
Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.
Ecoregions
Southeastern Plains
-
Blackland Prarie
Blue Ridge Mountains
Ridge and Valley
Cumberland Plateau
Cumberland Mountains
Allegheny Plateau
Interior Plateau
-
Bluegrass Region
Nashville Basin
Pennyroyal Karst Plain
Western Highland Rim
Eastern Highland Rim
Interior River Valleys and Hills
-
Shawnee / Caseyville Hills
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Synonyms
Specimens and Distribution
Click on an Accession Number to view additional details about the specimen.
Range of years during which specimens were collected:
Plant Photos
