Displaying 1 - 50 out of 113 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Acer saccharum subsp. nigrum (F.Michx.) Desmarais | T. Witsell 10-0256 | 22 Jul 2010 | United States of America | Arkansas | Benton Co. Ozark Highlands. Dissected… | — |
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| Agalinis tenuifolia (Vahl) Raf. | T. Witsell 11-0345 | 21 Sep 2011 | United States of America | Arkansas | Ashley Co. West Gulf Coastal… | — |
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| Asplenium ruta-muraria L. | T. Witsell 17-0001 | 8 Feb 2017 | United States of America | Arkansas | Randolph Co. Ozark Highlands. Central… | — |
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| Asplenium x gravesii Maxon | T. Witsell 13-0229 | 17 Aug 2013 | United States of America | Arkansas | Garland Co. Ouachita Mountains. Central… | — |
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| Bowlesia incana Ruiz & Pav. | T. Witsell 09-0013 | 4 Apr 2009 | United States of America | Alabama | Jefferson Co. Ridge and Valley.… | — |
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| Carex albolutescens Schwein. | T. Witsell 04-0536 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Moutains. Rich… | — |
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| Carex annectens (E.P.Bicknell) E.P.Bicknell | T. Witsell 04-445 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Ouachita… | — |
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| Carex annectens (E.P.Bicknell) E.P.Bicknell | T. Witsell 04-255 | 04 May 2004 | United States of America | Arkansas | Saline Co. Upper West Gulf… | — |
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| Carex arkansana (L.H.Bailey) L.H.Bailey | T. Witsell 07-20 | 03 Apr 2007 | United States of America | Arkansas | Hempstead Co. Upper West Gulf… | — |
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| Carex arkansana (L.H.Bailey) L.H.Bailey | T. Witsell 15-0200 | 11 Jun 2015 | United States of America | Arkansas | Benton Co. Ozark Highlands. Springfield… | — |
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| Carex atlantica L.H.Bailey subsp. atlantica | T. Witsell 06-126 | 25 Apr 2006 | United States of America | Arkansas | Saline Co. Ouachita Mountains, Northern… | — |
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| Carex atlantica subsp. capillacea (L.H.Bailey) Reznicek | T. Witsell 04-279 | 04 May 2004 | United States of America | Arkansas | Saline Co. Upper West Gulf… | — |
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| Carex aureolensis Steud. | T. Witsell 04-0539 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Rich… | — |
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| Carex brevior (Dewey) Mack. ex Lunell | T. Witsell 08-193 | 22 May 2008 | United States of America | Arkansas | Arkansas Co. Mississippi Alluvial Plain,… | — |
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| Carex bushii Mack. | T. Witsell 04-449 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Ouachita… | — |
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| Carex caroliniana Schwein. | T. Witsell 05-295 | 03 May 2005 | United States of America | Arkansas | Saline Co. Upper West Gulf… | — |
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| Carex caroliniana Schwein. | T. Witsell 08-103 | 04 May 2008 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Central… | — |
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| Carex communis L.H.Bailey var. communis | T. Witsell 09-0068 | 23 Apr 2009 | United States of America | Arkansas | Johnson Co. Ozark Highlands. Lower… | — |
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| Carex complanata Torr. & Hook. | T. Witsell 04-510 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Central… | — |
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| Carex conjuncta Boott | T. Witsell 09-0088 | 6 May 2009 | United States of America | Arkansas | Sharp Co. Ozark Highlands. Central… | — |
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| Carex digitalis Willd. | T. Witsell 18-0158 | 14 May 2018 | United States of America | Arkansas | Pope Co. Arkansas Valley. Arkansas… | — |
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| Carex festucacea Schkuhr ex Willd. | T. Witsell 04-444 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Ouachita… | — |
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| Carex festucacea Schkuhr ex Willd. | T. Witsell 08-104 | 04 May 2008 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Central… | — |
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| Carex granularis Muhl. ex Willd. | T. Witsell 04-328 | 11 May 2004 | United States of America | Arkansas | Marion Co. Ozark Plateau. Salem… | — |
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| Carex grayi J.Carey | T. Witsell 05-714 | 07 Jul 2005 | United States of America | Arkansas | Saline Co. West Gulf Coastal… | — |
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| Carex hirsutella Mack. | T. Witsell 04-443 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Ouachita… | — |
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| Carex intumescens Rudge | T. Witsell 04-0526 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains; on… | — |
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| Carex jamesii Schwein. | T. Witsell 05-196 | 22 Apr 2005 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Central… | — |
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| Carex joorii L.H.Bailey | T. Witsell 05-894 | 16 Aug 2005 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Fourche… | — |
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| Carex leptalea subsp. harperi (Fernald) Calder & Roy L.Taylor | T. Witsell 04-355 | 11 May 2004 | United States of America | Arkansas | Sharp Co. Ozark Plateau. Salem… | — |
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| Carex lurida Wahlenb. | T. Witsell 04-0518 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Rich… | — |
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| Carex muhlenbergii var. enervis Boott | T. Witsell 02-0511 | 14 May 2002 | United States of America | Arkansas | Saline Co. International Paper Pipewort… | — |
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| Carex oligocarpa Willd. | T. Witsell 09-0066 | 23 Apr 2009 | United States of America | Arkansas | Johnson Co. Ozark Highlands. Lower… | — |
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| Carex pellita Muhl. ex Willd. | T. Witsell 15-0207 | 11 Jun 2015 | United States of America | Arkansas | Benton Co. Ozark Highlands. Springfield… | — |
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| Carex reniformis (L.H.Bailey) Small | T. Witsell 07-160 | 09 May 2007 | United States of America | Arkansas | Hempstead Co. Gulf Coastal Plain.… | — |
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| Carex retroflexa Muhl. ex Willd. | T. Witsell 04-489 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Ouachita… | — |
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| Carex rosea Schkuhr ex Willd. | T. Witsell 08-102 | 04 May 2008 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Central… | — |
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| Carex rosea Schkuhr ex Willd. | T. Witsell 04-0519 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Rich… | — |
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| Carex suberecta (Olney) Britton | T. Witsell 04-352 | 11 May 2004 | United States of America | Arkansas | Sharp Co. Ozark Plateau. Salem… | — |
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| Carex swanii (Fernald) Mack. | T. Witsell 06-264 | 17 Jun 2006 | United States of America | Arkansas | Clay Co. Mississippi Alluvial Plain.… | — |
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| Carex texensis (Torr. ex L.H.Bailey) L.H.Bailey | T. Witsell 04-347 | 11 May 2004 | United States of America | Arkansas | Sharp Co. Ozark Plateau. Salem… | — |
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| Carex texensis (Torr. ex L.H.Bailey) L.H.Bailey | T. Witsell 06-104 | 23 Apr 2006 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Central… | — |
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| Carex texensis (Torr. ex L.H.Bailey) L.H.Bailey | T. Witsell 08-101 | 04 May 2008 | United States of America | Arkansas | Saline Co. Ouachita Mountains. Central… | — |
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| Carex tribuloides Wahlenb. | T. Witsell 05-595 | 03 Jun 2005 | United States of America | Arkansas | Saline Co. Upper West Gulf… | — |
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| Carex tribuloides Wahlenb. | T. Witsell 04-0538 | 31 May 2004 | United States of America | Arkansas | Saline Co. Ouachita Mountains. East… | — |
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| Carex tribuloides Wahlenb. | T. Witsell 03-697 | 11 Jul 2003 | United States of America | Arkansas | Carroll Co. Holiday Island | — |
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| Carex vulpinoidea Michx. | T. Witsell 06-206 | 20 May 2006 | United States of America | Arkansas | Saline Co. Ouachita Mountains; east… | — |
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| Chaerophyllum procumbens (L.) Crantz | T. Witsell 11-0036 | 20 Apr 2011 | United States of America | Arkansas | Garland Co. Ouachita Mountains. Central… | — |
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| Claytonia arkansana Yatsk., R.Evans & Witsell | T. Witsell 07-7 | 23 Mar 2007 | United States of America | Arkansas | Cleburne Co. Arkansas Valley. Along… | paratype |
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| Claytonia arkansana Yatsk., R.Evans & Witsell | T. Witsell 07-6 | 23 Mar 2007 | United States of America | Arkansas | Faulkner Co. Arkansas Valley. Cove… | — |
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