Eleocharis obtusa
blunt spike-rush, blunt spikerush, blunt spikesedge
Family
Cyperaceae
Leaf Arrangement
alternate
Leaf Margin
entire
Leaf Type
simple
Leaf Shape
linear
Growth Form
graminoid, emergent aquatic, aquatic
Flower Color
inconspicuous
Flower Month
June - November
Height (meters)
0.0 - 0.5
Milky Sap
No
Armed/Unarmed
Unarmed
Origin
native
Lifespan
annual, perennial
Growing Season
Warm season
Wetland Class
OBL
Wetland Coefficient of Conservatism
3
Prairie Coefficient of Conservatism
4
Field Characters
Green base, 10-12 inches tall. Stems thick (2 mm wide).
Cultural Information
No treatment is required for germination (Steffen 1997). Seeds average approximately 2,800,000/lb.
Natural History
Found locally abundant in moist sandy soils over much of North America. Correll and Johnston (1979) report that in Texas var. obtusa in the east and southeast part of the state grades into var. detonsa in north central Texas and the Edwards Plateau.
Habitat
Moist sandy soils.