The Carex of Central Florida book will be available from Curtis to the Third, P.O. Box 731, Lake Villa, Il 60046 in 2022. Research areas included Silver Springs, and Rainbow Springs, where the old Tarzan movies were filmed. Unreported or non-vouchered Carex species were found, including the globally imperiled Carex paeninsulae and several other species. 

In Wisconsin and Illinois, research areas included Chiwaukee West in Kenosha County, Wisconsin and in Illinois, Putnam, Lee, Ogle and Whiteside Counties.  Boreal sedge Carex crawfordii was found again but in different locations in Illinois Audubon Gremel Wildlife Sanctuary. 

On September 4, 2020 the Chicago News Sun Newspaper featured a front page story of Linda’s rediscovery of the rare water marigold, discovered originally in 1989 in Cedar Lake, Lake Villa, Illinois, and published a discovery article in Illinois Academy of Science Journal in 1990.

Megalodonta beckii was Bidens beckii.

The long stem with whorled leaves grows under the ice in winter.

One of the plants of Northeastern Illinois, the water marigold grows as a submersed aquatic plant, but has a  later summer bloom with flowers raised out of the water. After pollination, the petals fall and the seed head arches below the water surface, avoiding waterfowl that would nip them off and eat them.

 by Linda W. Curtis

A  poem on Irma Bombeck’s follows the Pitcher Plant Article for Wisconsin Entomological Society, Feb. 2020. Linda had writer’s guilt leaving the crane fly and the snow flea trapped in the food tube, so wrote a poem for their self-rescue escape at: Other humorous stories and poems are on

Google “Manatee Sneeze Linda Curtis.” or Linda Curtis botanist or Linda Curtis Carex or Linda W. Curtis scientist.

Research Notes

Areas searched for book Bog-Fen Carex in Wisconsin included Beulah Bog, Cedarburg Bog, Lima Bog, Spruce Lake Bog, Cherry Lake Sedge Meadow, Harrington Bog, Milwaukee River Tamarack Bog, Mauthe Lake Bog, Chiwaukee Prairie fens, Powell Marsh in Manitowish Waters, and Surprise Lake Bog in Crandon, & others.

In Illinois: Volo Bog, Barrington Bog, Brandenburg Bog, Pistakee Bog, Cranberry Lake Bog, Cedar Lake Bog, Wauconda Bog, Pike’s Marsh and Cranberry Bog in Moraine Hills State Park and the entire Zion beach-ridge plain and fens, from Kenosha Dunes through Chiwaukee Prairie and south through Wisconsin’s Illinois Beach Dunes, Hosah Preserve, south to Waukegan Dunes.

Rare plant Carex discoveries in Volo Bog Illinois State Preserve were:                                           C. brunnescens, C. canescens, C. chordorrhiza, C. disperma, C. trisperma, and C. echinata. Also found on the floating pond mat, sedge Cyperus diandrus.

The summer of 2019, Carex crawfordii was discovered in Lee County by Linda W. Curtis and a week later by Greg Wahl in Whiteside County. Only 2 previous sightings were documented in Illinois. See for map of species. 

C. echinata voucher plants were sent to Illinois State Museum herbarium and duplicates kept for the Volo Bog Nature Center herbarium. Rare plant reports were sent to IDNR and Illinois Endangered Species Board with gps.

In Florida, the globally imperiled  Carex paeninsulae was discovered among the Indian burial mounds in the Archaeological Park in Crystal River in Citrus County and later in Peacock Springs in Suwannee County, Florida.  State threatened C. chapmanii was discovered at Three Sisters Springs, also Crystal River, during sedge field research.

 Linda discovered State endangered Megalodonta beckii among 16 other aquatic plants in Cedar Lake, Lake County, Il., and published 1990 in the Journal of the Illinois Academy of Science. In Wisconsin’s Rock County, Linda found Carex swanii  in an oak savanna and  filed the rare plant report to the WDNR with a specimens sent to UW-Madison and UW Stevens Point Herbaria where she first researched specimens as an undergraduate.

In Illinois,  Carex mesochorea was discovered in the prairies of Nachusa Grasslands, in both Lee and Ogle Counties. Carex crawfordii was found in Gremel Wildlife Sanctuary, Lee County, in 2019. 


Education B.S. Wisconsin State College, Stevens Point, 1962. Botany M.S. U of Wisconsin-Milwaukee, 1974.Courses taught: Biology, Environmental Science, American Forest, Botany, Genetics, Local Flora, Plant Pathology, and Natural Areas Restoration.

College Positions UW-Milwaukee, Teaching Assistant of Botany courses and microbiology for UW School of Pharmacy. First teaching position in Lake Forest College, then Barat College, College of Lake County, Grayslake, Il., and McHenry Community College. A front page article on Linda W.Curtis and the rare water marigold was published September 4, 2020 in the Chicagoland newspaper News Sun, by Sheryl Devore.


  • Aquatic Plants of NE Illinois 1996    SOLD OUT
  •  Woodland Carex Upper Midwest 2006   SOLD OUT                                         
  •  Bog-Fen Carex of the Upper Midwest 2015    SOLD OUT      


  • Harbinger Illinois Native Plant Society,  Carex Corner #1-12 Lindaeus
  • NE Chapter INPS: Nodding Onion, Summer 2019, Chiwaukee Prairie: Steps in time.
  • Illinois Audubon Magazine 2016: Sedge Meadows.
  • Illinois NE Native Plant Society 2016: Sedges, What good are they?
  • Illinois Steward 2007- Sedges, Why Don’t We Know Them?
  • Lake County Forest Preserve -2016, Horizon Magazine.
  • Wild Ones Journal – 2016, Sedge Meadows.
  • Globally imperiled Peninsula Sedge, Palmetto, FNPS, Dec. 2016.
  • Wisconsin Entomological Society Newsletter- 3 articles in 2018.
  • Erigenia 2013 INPS Journal: Carex of Zion Beach-plain Ridge.
  • Erigenia 2010 INPS Journal: Additions to Volo Bog Herbarium.
  • Transactions of Illinois Science Academy 1990: Megalodonta beckii.
  • Illinois Audubon Magazine 2022 Transient boreal sedge, C. crawfordii.

Carex Reports 

  • Three Sisters Springs, Crystal River, Fl. 2013-2020
  • Florida Gulf Coast Carex, Citrus, Levy, Dixie Counties, Florida 2015
  • Devil’s Hammock, Levy County, Florida 2015
  • Goethe State Forest, Levy County, Florida 2013
  • Cedarburg Bog, Ozaukee County, Wisconsin 2013  
  • Chiwaukee Prairie, Kenosha County, Wisconsin 2014
  • Fort Sheridan, Lake County, Illinois 2012-2015
  • Harrington Beach, Ozaukee County, Wisconsin 2013
  • Illinois Beach State Park, Lake County, Illinois 2012
  • Hosah Park, Zion, Lake County, Illinois 2014
  • Illinois Audubon Amboy Marsh, Lee County, Illinois 2014- 2015

Florida Research

  • Lower Suwannee National Wildlife Refuge, Levy and Dixie Counties, 2016,  US Fish & Wildlife
  • Three Sisters Springs, Crystal River Wildlife Refuge,  Citrus Co. A  plant inventory finalized 9-2020 and sent to US Fish & Wildlife Service.
  • Suwannee and La Fayette Counties, Troy and Peacock Springs, Gilchrist County, Florida 2016-17, Wacassasa Bay, Levy County, Blues Springs State Park, 2018 FDEP.
  • Rainbow Springs State Park, Marion County, 2019. FDEP
  • Silver Springs State Park, Marion Co, 2019. FDEP. New species found.
  • Crystal River Parks and Recreation, Citrus County  Homosassa Springs Park, Chassahowitzka, and Withlacoochee Preserves, Ozello Trail, Otter Creek, Crystal River Ecowalk, Yoeman Park, and Churchhouse Hammock. FDEP 2008+

Illinois Research

  • Illinois Audubon Amboy Marsh, Lee County 2014-2020 
  • Nature Conservancy 2018 Nachusa Grasslands, Research & Symposium
  • Illinois Audubon Gremel Wildlife Sanctuary. Lee County 2017-2020
  • The Wetlands Initiative, Dixon Water fowl Refuge, Putnam Co, Illinois 2018
  • Nature Conservancy Chiwaukee Prairie West, 2018-2020, Kenosha County, Wis and Fairmeadows, Rock County, Wisconsin, 2019

The new Ryback property of Illinois Audubon Amboy Marsh Nature Preserve Reports was written remotely using Wm. Handlel’s Carex collection and aerial and Google Earth maps.. Florida’s Rainbow Springs State Park report as revised with Salvinia molesta as the invasive water fern and not S. minima. Ten counties in Florida now have the invasive floating fern.

Linda W. Curtis is author of three science books and humor stories.

, P.O. Box 371, Lake Villa, Il 60046.  Ask Linda about @

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