Illinois Natural History Survey - University of Illinois

Cyperus acuminatus
Taperleaf flat sedge
Taxonomy

Synonyms:

Subspecific taxa:

Classification:

  • Magnoliophyta

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

Images

   
View all images. View all at PhytoImages.
Species Distribution
If map does not appear refresh browser Refresh
Click map to view & download detailed 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: FLNAUSDA PlantsBONAPBISON

Collection & Observation Phenology [?]

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

Collection & Observation Timeline [?]

Species Status

Status/Listing: No Information

Notes:

Origin: Native

Species Description

General: Monocot, annual

Roots: adventitious, fibrous

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

Inflorescence: spike, head

Flowers: perfect; 3 merous; incomplete, not petals, not sepals; hypogynous ovary position

Fruit: achene

Physiology: autotrophic

Ecology & Natural History

Habitat: Species is distributed on muddy wet margins, of ponds, creeks and spring branches.

ILPIN Notes: Species is found throughout Illinos, except for northernmost tier of counties. Species involucral bracts 2-4 exceed the hemi-spherical inflorescence of numerous spikes. Some spikes are sessile, others on rays 1-4 cm long. Spikelets are flat with 12-40 flowers. Scales are ovate, apices outwardly curving (but not as much as in C. aristatus).

Functional Relationships:

Human Relationships:

  • Edibility [?] : yes
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

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

  • Entire State: 2
  • Chicago Area: 6

Post a Comment or Question About this Plant
Name

Email address (required)

Comment? Question? 300 word limit (required)




Enter the text code above (required)

Note: All submissions are moderated and only some are posted. Posted comments may be edited for length. An email address will not be posted, but it is required for communication with the site moderator. Comments focused outside of Illinois and neighboring states may be posted, but more attention will be given to Illinois centered information. Thanks for your interest.