| 
                                    Carex miliaris Michx.
                                 | 
                                T. C. Porter s.n. | 
                                Aug 1869 | 
                                Canada | 
                                — | 
                                Marguerite River, lower Canada | 
                                — | 
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                                | 
                                    Astragalus pringlei S.Watson
                                 | 
                                T. C. Porter s.n. | 
                                1885 | 
                                Mexico | 
                                Chihuahua | 
                                Near Chihuahua | 
                                isotype | 
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                                | 
                                    Actinella grandiflora var. glabrata Porter
                                 | 
                                T. C. Porter s.n. | 
                                Aug 1874 | 
                                United States of America | 
                                Colorado | 
                                Sangre de Cristo Range, C.… | 
                                possible isotype | 
                                 | 
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                                | 
                                    Aster cordifolius var. lanceolatus Porter
                                 | 
                                T. C. Porter s.n. | 
                                Oct 1888 | 
                                United States of America | 
                                Pennsylvania | 
                                Northampton Co. Easton | 
                                syntype | 
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                                | 
                                    Aster cordifolius var. lanceolatus Porter
                                 | 
                                T. C. Porter s.n. | 
                                29 Sep 1886 | 
                                United States of America | 
                                Pennsylvania | 
                                Northampton Co. Easton | 
                                lectotype | 
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                                | 
                                    Suaeda depressa var. erecta S.Watson
                                 | 
                                T. C. Porter s.n. | 
                                08 Aug 1871 | 
                                United States of America | 
                                Montana | 
                                Crow Agency, Montana Ter.; Hayden | 
                                possible syntype | 
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                                | 
                                    Eremogone congesta (Nutt.) Ikonn. var. congesta
                                 | 
                                T. C. Porter s.n. | 
                                19 Jul 1873 | 
                                United States of America | 
                                — | 
                                Uinta Mountains, Utah Territory. | 
                                — | 
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                                | 
                                    Eremogone congesta (Nutt.) Ikonn. var. congesta
                                 | 
                                T. C. Porter s.n. | 
                                19 Jul 1873 | 
                                United States of America | 
                                — | 
                                Uinta Mountains, Utah Territory. | 
                                — | 
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                                | 
                                    Eremogone congesta (Nutt.) Ikonn. var. congesta
                                 | 
                                T. C. Porter s.n. | 
                                25 Sep 1870 | 
                                United States of America | 
                                Wyoming | 
                                Unita Mtns. | 
                                — | 
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                                | 
                                    Thalictrum alpinum L.
                                 | 
                                T. C. Porter s.n. | 
                                25 Jul 1873 | 
                                United States of America | 
                                Utah | 
                                Uinta Mountains | 
                                — | 
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                                | 
                                    Thalictrum alpinum L.
                                 | 
                                T. C. Porter s.n. | 
                                25 Jul 1873 | 
                                United States of America | 
                                Utah | 
                                Uinta Mountains | 
                                — | 
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                                | 
                                    Thalictrum scopulorum Greene
                                 | 
                                T. C. Porter s.n. | 
                                25 Jul 1873 | 
                                United States of America | 
                                Utah | 
                                Uinta Mountains | 
                                not a type | 
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                                | 
                                    Solidago porteri Small
                                 | 
                                T. C. Porter s.n. | 
                                01 Sep 1846 | 
                                United States of America | 
                                Georgia | 
                                Monticello | 
                                holotype | 
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                                | 
                                    Solidago porteri Small
                                 | 
                                T. C. Porter s.n. | 
                                01 Sep 1846 | 
                                United States of America | 
                                Georgia | 
                                Middle Georgia | 
                                isotype | 
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                                | 
                                    Solidago porteri Small
                                 | 
                                T. C. Porter s.n. | 
                                01 Sep 1846 | 
                                United States of America | 
                                Georgia | 
                                Middle Georgia | 
                                isotype | 
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                                | 
                                    Lupinus cusickii S.Watson
                                 | 
                                T. C. Porter 1361 | 
                                Jul 1866 | 
                                United States of America | 
                                Oregon | 
                                Upper Bu[?] River | 
                                isotype | 
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                                | 
                                    Calamagrostis porteri A.Gray
                                 | 
                                T. C. Porter s.n. | 
                                1862 | 
                                United States of America | 
                                Pennsylvania | 
                                In montosis Pennsylvaniae | 
                                isotype | 
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                                | 
                                    Grayia spinosa (Hook.) Moq.
                                 | 
                                T. C. Porter 10373 | 
                                04 Aug 1873 | 
                                United States of America | 
                                Wyoming | 
                                Fort Bridger | 
                                — | 
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                                | 
                                    Alyssum alyssoides (L.) L.
                                 | 
                                T. C. Porter  | 
                                May-Jun 1875 | 
                                United States of America | 
                                Pennsylvania | 
                                Clarion Co. Near Easton. [Inferred… | 
                                — | 
                                 | 
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                                | 
                                    Alyssum alyssoides (L.) L.
                                 | 
                                T. C. Porter s.n. | 
                                08 Jun 1892 | 
                                United States of America | 
                                Pennsylvania | 
                                Northampton Co. College Campus [=Lafayette… | 
                                — | 
                                 | 
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                                | 
                                    Alyssum alyssoides (L.) L.
                                 | 
                                T. C. Porter s.n. | 
                                1877 | 
                                United States of America | 
                                Pennsylvania | 
                                Clarion Co. Near Easton. [Inferred… | 
                                — | 
                                 | 
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                                | 
                                    Alyssum alyssoides (L.) L.
                                 | 
                                T. C. Porter s.n. | 
                                01 Jun 1877 | 
                                United States of America | 
                                Pennsylvania | 
                                Northampton Co. College campus [=Lafayette… | 
                                — | 
                                 | 
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                                | 
                                    Alyssum alyssoides (L.) L.
                                 | 
                                T. C. Porter s.n. | 
                                04 Jun 1895 | 
                                United States of America | 
                                Pennsylvania | 
                                Northampton Co. College Hill | 
                                — | 
                                 | 
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                                | 
                                    Eriogonum heracleoides Nutt. var. heracleoides
                                 | 
                                T. C. Porter s.n. | 
                                05 Jun 1871 | 
                                United States of America | 
                                Utah | 
                                Ogden, Utah Territory. | 
                                — | 
                                 | 
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                                | 
                                    Carex miliaris var. major L.H.Bailey
                                 | 
                                T. C. Porter s.n. | 
                                — | 
                                United States of America | 
                                Maine | 
                                Outlet of Moosehead Lake | 
                                possible type | 
                                 | 
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