| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Carex seorsa Howe | E. C. Howe s.n. May 1886 | United States of America. New York. Rensselaer Co. Lansingburg. [=Lansingburgh] Lansing's Grove. | isotype | 11325 | |
| Carex seorsa Howe | R. F. C. Naczi 14907 with J. Jiang, C. Carollo, F. B. Matos, 20 Jun 2013 | United States of America. New York. Westchester Co. Zofnass Family Preserve. Eastern Loop. Swamp near the entrance. | 01096824 |  | |
| Carex seorsa Howe | W. D. Longbottom 17223 07 May 2012 | United States of America. Delaware. Sussex Co. Town of Laurel, Records Pond, east of US Rt. 12, Sussex Highway (Road 2), swampy woods aroung the pind. | 02147452 |  | |
| Carex seorsa Howe | H. K. D. Eggert s.n. 23 May 95 | United States of America. Georgia. DeKalb Co. Stone Mountain. | 2303175 |  | |
| Carex seorsa Howe | W. H. Witte s.n. 27 May 1933 | United States of America. New Jersey. Cape May Co. Bog at Cold Spring. | 2303176 |  | |
| Carex seorsa Howe | A. C. Ferguson 26 11 May 1921 | United States of America. New York. Millers Pond, Smithtown; Long Island. | 2303177 |  | |
| Carex seorsa Howe | R. M. Harper 2111 09 Apr 1904 | United States of America. Georgia. Jefferson Co. Louisville. Swamp of Rocky Comfort Creek. | 2303179 |  | |
| Carex seorsa Howe | C. H. Peck s.n. May | United States of America. New York. Suffolk Co. Islip. Long Isl. | 2303180 |  | |
| Carex seorsa Howe | W. C. Ferguson s.n. 5-10-21 | United States of America. New York. Nassau Co. Valley Stream. Long Island. | 2303181 |  | |
| Carex seorsa Howe | K. K. Mackenzie 4971 26 May 1912 | United States of America. New Jersey. East of Monmouth Junction. | 2303185 |  | |
| Carex seorsa Howe | E. P. Bicknell s.n. 10 May 1891 | United States of America. New York. Van Cortlandt Park. | 2303186 |  | |
| Carex seorsa Howe | N. L. Britton s.n. 03 Jun 1894 | United States of America. New York. Todt Hill, Staten Island. | 2303187 |  | |
| Carex seorsa Howe | W. C. Ferguson 71 5-18-21 | United States of America. New York. Queens Co. Flushing. Long Island. | 2303188 |  | |
| Carex seorsa Howe | W. C. Ferguson 5523 6-2-27 | United States of America. New York. E. Islip; Long Island. | 2303190 |  | |
| Carex seorsa Howe | W. C. Ferguson 5681 6-20-27 | United States of America. New York. Suffolk Co. Montauk. Long Island. | 2303191 |  | |
| Carex seorsa Howe | H. D. House 5094 21 Apr 1913 - 27 Apr 1913 | United States of America. North Carolina. Onslow Co. Camp Perry. | 2303192 |  | |
| Carex seorsa Howe | B. H. Long 3776 01 Jun 1910 | United States of America. Pennsylvania. Montgomery Co. Willow Grove; above Frazier's Bog about 1 mi. s.e., near Boyer's Corner. | 2303193 |  | |
| Carex seorsa Howe | A. E. Radford 21028 19 Apr 1957 | United States of America. South Carolina. Sumter Co. 4 1/2 miles west fo Pinewood near Millford. | 2303194 |  | |
| Carex seorsa Howe | R. Whitkus 179 30 May 1977 | United States of America. New Jersey. Sussex Co. Stockholm. Swamp behind dam of Summit Lake. | 2303195 |  | |
| Carex seorsa Howe | C. H. Peck s.n. May | United States of America. New York. Suffolk Co. Islip. Long Island. | 2303197 |  | |
| Carex seorsa Howe | W. C. Ferguson s.n. 11 May 1921 | United States of America. New York. Suffolk Co. Smithtown. Miller's Pond. | 2303198 |  | |
| Carex seorsa Howe | C. H. Peck s.n. May 1894 | United States of America. New York. Suffolk Co. Islip. Long Island. | 2303199 |  | |
| Carex seorsa Howe | K. K. Mackenzie 1290 30 May 1905 | United States of America. New Jersey. Sussex Co. Cranberry Lake. | 2303201 |  | |
| Carex seorsa Howe | K. K. Mackenzie 2629 09 Jun 1907 | United States of America. New Jersey. Sussex Co. Cranberry Lake. | 2303202 |  | |
| Carex seorsa Howe | K. K. Mackenzie 2629 09 Jun 1907 | United States of America. New Jersey. Sussex Co. Cranberry Lake. | 2303204 |  | |
| Carex seorsa Howe | G. G. Kennedy 50 with M. L. Fernald, 08 Jun 1902 | United States of America. Massachusetts. Norfolk Co. Canton. Neponset River Reservation. | 2303205 |  | |
| Carex seorsa Howe | F. E. Egler 40-295 17 Aug 1940 | United States of America. Virginia. F-3, 3/4 m. E. of junction with R-1; Cape Henry. | 2303206 |  | |
| Carex seorsa Howe | C. A. Weatherby 16454 with Ludlow Griscom, 18 Apr 1932 | United States of America. South Carolina. Horry Co. 4 miles south of Myrtle Beach. | 2303207 |  | |
| Carex seorsa Howe | W. C. Ferguson 2027 5-30-23 | United States of America. New York. Nassau Co. Long Island, Plattsdale (see notes). [Inferred county from precise loc.]. | 2303208 |  | |
| Carex seorsa Howe | C. B. Graves s.n. 17 Jun 1897 | United States of America. Connecticut. New London Co. Ledyard. Pine Swamp. | 2303209 |  | |
| Carex seorsa Howe | R. K. Godfrey 73481 30 Apr 1974 | United States of America. Florida. Leon Co. Anders Branch, Tall Timbers Research Station. | 2303212 |  | |
| Carex seorsa Howe | E. P. Bicknell 3049 10 Jun 1908 | United States of America. Massachusetts. Nantucket Island; Trots swamp. | 2303214 |  | |
| Carex seorsa Howe | B. H. Long 12080 19 May 1915 | United States of America. New Jersey. Atlantic Co. Chestnut Neck, Mullica River, Port Republic. | 2303216 |  | |
| Carex seorsa Howe | K. K. Mackenzie s.n. 19 Jun 1920 | United States of America. New Jersey. Sussex Co. Lake Mashipacong. | 2303218 |  | |
| Carex seorsa Howe | W. D. Longbottom 7306 with Deborah W. Rowan, 14 May 2006 | United States of America. Maryland. Wicomico Co. North west of the town of Mardela Springs, along Old Bradley Road in the vicinity of the Tom Tyler Complex. | 2303219 |  | |
| Carex seorsa Howe | C. T. Frye 6125 03 May 2011 | United States of America. Maryland. Saint Mary's Co. Outer Coastal Plain, Bay Forest Road, Elms Cooperative Wildlife Management Area. | 2303221 |  | |
| Carex seorsa Howe | W. D. Longbottom 7194 with Roger D. Redden; J. Daniel Saffer, 30 Apr 2006 | United States of America. Maryland. Wicomico Co. Along Bear Swamp Road at Beach Island Creek. | 2303222 |  | |
| Carex seorsa Howe | W. D. Longbottom 8693 06 May 2007 | United States of America. Maryland. Worcester Co. North of Pocomoke City, along Fleming Mill Road at Dividing Creek. | 2303224 |  | |
| Carex seorsa Howe | W. D. Longbottom 5777 09 May 2005 | United States of America. Maryland. Wicomico Co. Town of Salisbury, south section of Scenic Drive at the end of Marvel Road, along flood plain of Wicomico River. | 2303225 |  | |
| Carex seorsa Howe | W. D. Longbottom 7286 with Deborah W. Rowan, 14 May 2006 | United States of America. Maryland. Dorchester Co. East of Hurlock, MD Rt. 392 at Wesley Road. | 2303226 |  |