Missouri Department of Conservation
Missouri Department of Conservation

Taxonomy

Common Name: WEAKSTALK BULRUSH

Phylum: MAGNOLIOPHYTA

Class: LILIOPSIDA

Order: CYPERALES

Family: CYPERACEAE

Genus: SCHOENOPLECTIALLA

Species: PURSHIANUS

Taxonomic Authority: (FERNALD) M. STRONG

Taxonomy References: 001 , 002 , 003

Status

STATE RANK S2
GLOBAL RANK G4G5

Status References: 001

Habitat Summary

"Occurs along lake margins *02,03*."

Primary Habitat: "Wetland - moist edge/mudflat"

References: 002 , 003

Distribution

General Occurrence in State:

"Known from Carter, Franklin, St. Francois and Washington counties *004*. Appears to be expanding its range westward in recent years *02*."

County Occurance

County Occurence
Known Likely Unknown Not Likely Historic Extirpated
CARTER
FRANKLIN
ST. FRANCOIS
WASHINGTON

References for distribution: 002 , 003 , 004

Distribution by Watersheds

Big R.

Comments: ""

Distribution by Ecoregions

Comments: ""

Distribution by Potential Natural Vegetation

Oak-Hickory Forest
Oak-Hickory-Pine Forest

Distribution by Natural Divisions of Missouri

Ozark: Upper Ozark

Habitat Associations

Species is associated with "Aquatic" habitats.

National Wetlands Inventory Association:

Palustrine

Aquatic Associations:

"Palustrine"

References for Aquatic Associations: 002 , 003

Habitat Types:

References for Habitat Types:

Terrestrial Natural Communities:

References for Terrestrial Natural Communities: 002 , 003

Food Habits

Trophic Level:

""

Larval Food Habits

Comments for larval food habits:
""

References for larval food habits:

Juvenile Food Habits

Comments for Juvenile Food Habits:
""

References Juvenile Food Habits

Adult Food Habits

Comments for Adult Food Habits:
""

References Adult Food Habits

Niche Requirements

Egg Niche Requirements

References for egg niches requirements:

Feeding Larvae Niche Requirements

References for feeding larvae niche requirements:

Resting Larvae Niche Requirements

References for resting Larvae niche requirements:

Feeding Juvenile Niche Requirements

References for feeding juvenile niche requirements:

Resting Juvenile Niche Requirements

References for resting juvenile niche requirements:

Breeding Adult Niche Requirements

References for feeding Adult niche requirements:

Feeding Adult Niche Requirements

References for feeding adult niche requirements:

Resting Adult Niche Requirements

References for resting adult niche requirements:

Niche Requirement Summary

General habitat association specified in comments(00270)

Comments about Life History:

Code Comment
046 Seeds are dispersed by waterfowl *002*.
001 This species is undoubtedly a recent migrant into the state, probably spread naturally in mud on the feathers and feet (or in the stomachs) of migrating waterfowl *002*.

Life History Information

Duration of plant:annual
Seed dispersal by:animal
Seed dispersal by:see comments(046)
Life form:herb
Flowering period begins: July
Flowering period ends: September
Origin in state: native
Origin in state specified in comments(001)

Comments about Life History:

Code Comment
046 Seeds are dispersed by waterfowl *002*.
001 This species is undoubtedly a recent migrant into the state, probably spread naturally in mud on the feathers and feet (or in the stomachs) of migrating waterfowl *002*.

References for life history: 002

Management

Beneficial Management Practices:

Beneficial Management References:

Adverse Managment Practices:

Adverse Management References:

Comments on Management:

References for Management Comments:

References

Reference Code Citation
001 Missouri Natural Heritage Program. 2018. Missouri Species and communities of conservation concern checklist. MO Dept. of Conservation. Jefferson City, MO. pp.56.
002 Yatskievych, G. 1999. Steyermark's Flora Of Missouri. Vol.1 Jefferson City, Missouri. Department Of Conservation. 991 Pp.
003 Unpb Flora Of Missouri Database. G. Yatskievych, Missouri Botanical Garden, P.O. Box 299, St. Louis, Mo. 63166-0299. 314-577-9522.
004 Unpb Missouri Department Of Conservation Heritage Database. P.O. Box 180, Jefferson City, Missouri 65102. 573-751-4115.