CPC National Collection Plant Profile
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CPC National Collection Plant Profile
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Cyperus grayoides
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Cyperus grayoides is Fully Sponsored |
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Primary
custodian for this plant in the CPC National Collection of Endangered
Plants is: |
Lindsey Parsons contributed to this Plant Profile. |
| Cyperus grayoides | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This sedge is fairly abundant in the few locations where it occurs. It requires open and deep sand dunes that are regularly disturbed by a variety of factors. While development has clearly hurt this population, as has fire suppression, the impact of grazing depends a great deal on the animal doing the grazing. Grazing by domestic animals appears to hurt these plants (NatureServe Explorer 2002) while grazing by native wildlife seems to provide a form of disturbance that benefits the plants (IL DNR 2002). Natural disturbances have always been highly variable in their occurrence and C. grayoides has adapted by producing seeds that remain viable for at least 15 years in seed banks (IL DNR 2002).This plant reaches a full height of 8-48cm tall, with fibrous and slender roots. The leaves of this plant are grayish green, and has inflorescences of unequal umbel with spikes. The spikes come in clusters of 2-7, while each spike has 3-24 spikelets. This plant blooms from July to September in most places, although in Texas the plant can bloom from May until November, depending on rainfall. The fruit matures from mid-July to mid-August.
State Range
Distribution
Number Left
State/Area Protection
Ecological Relationships
Threats
Current Research Summary
Current Management Summary
Research Management Needs Ex Situ Needs |
References |
2000. Missouri Plants of Conservation Concern. Jefferson City, MO: Conservation Commission of Missouri--Missouri Department of Conservation. |
Herkert, J.; Ebinger, J.E. 2002. Endangered and threatened species of Illinois: Status and distribution. Springfield, IL: Illinois Endangered Species Protection Board. 161p. |
ILDNR. (2002). Plant species biology summaries. Illinois Department of Natural Resources, Division of Natural Heritage, Botany Program. http://dnr.state.il.us/conservation/naturalheritage/botany/botany.htm. Accessed: 2002. |
NatureServe. (2008). NatureServe Explorer: An online encyclopedia of life [web application]. [Internet].Version 7.0. NatureServe, Arlington, Virginia. http://www.natureserve.org/explorer. Accessed: (June 17, 2008). |
Carter, R.; Bryson, C.T. 1991. A report of Cyperus grayioides and Cyperus retroflexus (Cyperaceae) new to Missouri and notes on other selected Missouri Cyperus. Sida. 14: 475-481. |
Logan, J.M. 1996. Results of a field survey for Cyperus grayoides (Cyperaceae) in Arkansas. Sida Contributions to Botany. 17, 1: 283-286. |
Schwegman, J.E. 1988. Illinoensis. Newsletter of the Illinois Native Plant Conservation Program. 4, 1: 4?. |
Turner, R. 1999. A severe windstorm creates opportunities for ecosystem restoration in Texas national forests. The Nature Conservancy Newsletter--Horizon. 24, 2 |
USFWS. 1976. Proposed Endangered Status for 1700 U.S. Plants. Federal Register. 41: 24523-24572. |
| This profile was updated on 3/4/2010 |