Displaying 1 - 75 out of 1106 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Acer pseudoplatanus L. | F. C. MacKeever N393 | 07 Jun 1960 | United States of America | Massachusetts | Nantucket Co. Nantucket Island, Miacomet… | — | 2487821 |
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| Acer rubrum L. | F. C. MacKeever N403 | 08 Jun 1960 | United States of America | Massachusetts | Nantucket Co. Tom Nevers Swamp | — | 2488208 |
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| Acer rubrum L. | F. C. MacKeever MV360 | 30 May 1960 | United States of America | Massachusetts | Gay Head Martha's Vineyard | — | 2488251 |
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| Achillea millefolium L. | F. C. MacKeever N307 | 12 Aug 1959 | United States of America | Massachusetts | Rd. to Tom Nevers Pd.,… | — | 1866175 |
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| Achillea millefolium L. | F. C. MacKeever MV156 | 05 Sep 1958 | United States of America | Massachusetts | Rd. to Gay Head, Martha's… | — | 1866176 |
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| Achillea millefolium L. | F. C. MacKeever 566 | 28 Jul 1961 | United States of America | Massachusetts | Nantucket, Nantucket Is. | — | 1866349 |
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| Achillea millefolium L. | F. C. MacKeever MV467 | 15 Jul 1961 | United States of America | Massachusetts | Dukes Co. Martha's Vineyard | — | 1866446 |
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| Aethusa cynapium L. | F. C. MacKeever 938 | 14 Sep 1965 | United States of America | Massachusetts | Nantucket Co. Nantucket Island. | — | 1064652 |
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| Agrimonia gryposepala Wallr. | F. C. MacKeever 66 | 09 Sep 1958 | United States of America | Massachusetts | Nantucket Co. Hidden Forest | — | 2718244 |
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| Agrostis capillaris L. | F. C. MacKeever 630 | 30 Jun 1964 | United States of America | Massachusetts | Katama Shores, Martha's Vineyard | — | 1554628 |
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| Agrostis capillaris L. | F. C. MacKeever 783 | 02 Jul 1964 | United States of America | Massachusetts | Siasconset, Nantucket Island. | — | 1554637 |
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| Agrostis capillaris L. | F. C. MacKeever N709 | 28 Jul 1963 | — | — | Ram Pasture (Indian Campsite). | — | 1554656 |
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| Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. | F. C. MacKeever 1053 | 01 Sep 1966 | United States of America | Massachusetts | Quaise, Nantucket Island. Harriett Hollister's… | — | 1555753 |
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| Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. | F. C. MacKeever 554 | 26 Jul 1961 | United States of America | Massachusetts | Tom Nevers Head, Nantucket Island. | — | 1555754 |
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| Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. | F. C. MacKeever 705 | 27 Jul 1963 | United States of America | Massachusetts | Sauls Hills, Nantucket Island | — | 1555755 |
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| Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. | F. C. MacKeever s.n. | 24 Aug 1958 | United States of America | Massachusetts | Vineyard Haven, Martha's Vineyard | — | 1555756 |
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| Agrostis perennans (Walter) Tuck. | F. C. MacKeever 1043 | 30 Aug 1966 | United States of America | Massachusetts | Hummock Pond Area, Nantucket Island | — | 1556739 |
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| Agrostis perennans (Walter) Tuck. | F. C. MacKeever 1028 | 27 Aug 1966 | United States of America | Massachusetts | Nantucket Co. Nantucket Island. | — | 1556742 |
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| Agrostis perennans (Walter) Tuck. | F. C. MacKeever 1043 | 30 Aug 1966 | United States of America | Massachusetts | Nantucket Co. Hummock Pond Area,… | — | 1556744 |
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| Agrostis perennans (Walter) Tuck. | F. C. MacKeever 1030 | 27 Aug 1966 | United States of America | Massachusetts | Nantucket Island | — | 1556746 |
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| Agrostis perennans (Walter) Tuck. | F. C. MacKeever 1028 | 27 Aug 1966 | United States of America | Massachusetts | Nantucket Co. Nantucket Island. | — | 1556747 |
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| Agrostis perennans (Walter) Tuck. | F. C. MacKeever 708 | 28 Jul 1963 | United States of America | Massachusetts | Ram Pasture, Nantucket Island | — | 1556838 |
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| Agrostis perennans (Walter) Tuck. | F. C. MacKeever 55 | 01 Sep 1958 | United States of America | Massachusetts | Gay Head, Martha's Vineyard. | — | 1556915 |
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| Agrostis stolonifera L. | F. C. MacKeever 1029 | 27 Aug 1966 | United States of America | Massachusetts | Nantucket Island | — | 1533053 |
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| Agrostis stolonifera L. | F. C. MacKeever 638 | 18 Aug 1962 | United States of America | Massachusetts | Miacomet Pond, Nantucket Island | — | 1533054 |
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| Agrostis stolonifera L. | F. C. MacKeever 637 | 18 Aug 1962 | United States of America | Massachusetts | Miacomet Pond, Nantucket Island | — | 1533055 |
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| Agrostis stolonifera L. | F. C. MacKeever 1013 | 14 Jun 1966 | United States of America | Massachusetts | Nantucket, Nantucket Island | — | 1533056 |
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| Agrostis stolonifera L. | F. C. MacKeever 1012 | 14 Jun 1966 | United States of America | Massachusetts | — | 1533057 |
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| Aira caryophyllea L. | F. C. MacKeever 988 | 11 Jun 1966 | United States of America | Massachusetts | Siasconset, Nantucket Island. | — | 1637339 |
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| Aira caryophyllea L. | F. C. MacKeever 988 | 11 Jun 1966 | United States of America | Massachusetts | Siasconset, Nantucket Island. | — | 1637342 |
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| Aira caryophyllea L. | F. C. MacKeever 680 | 25 Aug 1962 | United States of America | Massachusetts | Nantucket, Nantucket Island | — | 1637343 |
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| Aira praecox L. | F. C. MacKeever 993 | 11 Jun 1966 | United States of America | Massachusetts | Nantucket, Nantucket Island | — | 1637470 |
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| Allium sativum L. | F. C. MacKeever MV483 | 18 Jul 1961 | United States of America | Massachusetts | Dukes Co. Martha's Vineyard | — | 3772870 |
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| Alnus serrulata (Aiton) Willd. | F. C. MacKeever 653 | 17 Aug 1964 | United States of America | Massachusetts | Dukes Co. West Tisbury, Martha's… | — | 2472734 |
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| Alopecurus pratensis L. | F. C. MacKeever 880 | 01 May 1965 | United States of America | Massachusetts | Nantucket Co. Nantucket Island. | — | 1638369 |
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| Alopecurus pratensis L. | F. C. MacKeever 971 | 09 May 1966 | United States of America | Massachusetts | Nantucket Co. Nantucket Island. | — | 1638371 |
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| Alopecurus pratensis L. | F. C. MacKeever 375 | 06 Jun 1960 | United States of America | Massachusetts | Nantucket Co. Nantucket Island. | — | 1638376 |
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| Alopecurus pratensis L. | F. C. MacKeever 971 | 09 May 1966 | United States of America | Massachusetts | Nantucket Co. Nantucket Island. | — | 1638377 |
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| Ambrosia artemisiifolia L. | F. C. MacKeever N935 | 13 Sep 1965 | United States of America | Massachusetts | Nantucket Co. | — | 1877776 |
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| Ambrosia artemisiifolia L. | F. C. MacKeever N678 | 24 Aug 1962 | United States of America | Massachusetts | Nantucket Co. | — | 1877993 |
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| Amelanchier canadensis (L.) Medik. | F. C. MacKeever N570 | 29 Jul 1961 | United States of America | Massachusetts | Nantucket Co. Near Nantucket Forest,… | — | 2720337 |
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| Amelanchier canadensis (L.) Medik. | F. C. MacKeever N230 | 28 May 1959 | United States of America | Massachusetts | Nantucket Co. Rd. to Gibbs… | — | 2720364 |
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| Amelanchier canadensis (L.) Medik. | F. C. MacKeever N392 | 07 Jun 1960 | United States of America | Massachusetts | Nantucket Co. Miacomet Pd., Nantucket… | — | 2721637 |
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| Amelanchier intermedia Spach | F. C. MacKeever MV243B | 26 May 1959 | United States of America | Massachusetts | Dukes Co. Martha's Vineyard | — | 2721951 |
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| Amelanchier laevis Wiegand | F. C. MacKeever MV243A | 26 May 1959 | United States of America | Massachusetts | Dukes Co. Martha's Vineyard | — | 2722093 |
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| Amelanchier laevis Wiegand | F. C. MacKeever MV169 | 22 May 1959 | United States of America | Massachusetts | Dukes Co. Martha's Vineyard | — | 2722094 |
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| Amelanchier nantucketensis E.P.Bicknell | F. C. MacKeever N570 | 29 Jul 1961 | United States of America | Massachusetts | Nantucket Co. Near Nantucket Forest,… | — | 02722245 |
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| Amelanchier prunifolia Greene | F. C. MacKeever N482 | 20 Aug 1960 | United States of America | Massachusetts | Nantucket Co. Nantucket Island | — | 2709727 |
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| Amelanchier prunifolia Greene | F. C. MacKeever N247 | 31 May 1959 | United States of America | Massachusetts | Nantucket Co. Tom Nevers Pd.,… | — | 2709728 |
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| Amelanchier prunifolia Greene | F. C. MacKeever N438 | 15 Aug 1960 | United States of America | Massachusetts | Nantucket Co. Nantucket Island | — | 2709730 |
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| Amelanchier prunifolia Greene | F. C. MacKeever N922 | 08 Sep 1965 | United States of America | Massachusetts | Nantucket Co. Nantucket Island | — | 2709731 |
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| Amelanchier prunifolia Greene | F. C. MacKeever N922 | 08 Sep 1965 | United States of America | Massachusetts | Nantucket Co. Nantucket Island | — | 2709732 |
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| Amelanchier prunifolia Greene | F. C. MacKeever N922 | 08 Sep 1965 | United States of America | Massachusetts | Nantucket Co. Nantucket Island | — | 2709734 |
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| Amelanchier prunifolia Greene | F. C. MacKeever N922 | 08 Sep 1965 | United States of America | Massachusetts | Nantucket Co. Nantucket Island | — | 2709735 |
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| Amelanchier stolonifera Wiegand | F. C. MacKeever N570 | 29 Jul 1961 | United States of America | Massachusetts | Nantucket Co. Near Nantucket Forest,… | — | 2722618 |
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| Amelanchier stolonifera Wiegand | F. C. MacKeever N444 | 16 Aug 1960 | United States of America | Massachusetts | Nantucket Co. Gibbs Pd., Nantucket… | — | 2722619 |
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| Amelanchier stolonifera Wiegand | F. C. MacKeever N389 | 06 Jun 1960 | United States of America | Massachusetts | Nantucket Co. Fair Grounds, Nantucket… | — | 2722636 |
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| Amelanchier stolonifera Wiegand | F. C. MacKeever N544 | 25 Jul 1961 | United States of America | Massachusetts | Nantucket Co. Fairgrounds, Nantucket Island | — | 2722637 |
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| Amelanchier stolonifera Wiegand | F. C. MacKeever N602 | 22 Jun 1962 | United States of America | Massachusetts | Nantucket Co. Nantucket Island | — | 2722638 |
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| Amelanchier stolonifera Wiegand | F. C. MacKeever N389 | 06 Jun 1960 | United States of America | Massachusetts | Nantucket Co. fairgrounds, Nantucket Island | — | 2722639 |
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| Ammophila breviligulata Fernald | F. C. MacKeever 750 | 28 Aug 1963 | — | — | Eel Point, Nantucket Island, Mass | — | 1638585 |
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| Ammophila breviligulata Fernald | F. C. MacKeever 750 | 28 Aug 1963 | United States of America | Massachusetts | Eel Point, Nantucket Island | — | 1638586 |
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| Anaphalis margaritacea (L.) Benth. & Hook.f. | F. C. MacKeever N155 | 11 Sep 1958 | United States of America | Massachusetts | Near Naval Base, Nantucket Is. | — | 1888658 |
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| Anaphalis margaritacea (L.) Benth. & Hook.f. | F. C. MacKeever N308 | 12 Aug 1959 | United States of America | Massachusetts | Tom Nevers Head, Nantucket Is. | — | 1888659 |
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| Anaphalis margaritacea (L.) Benth. & Hook.f. | F. C. MacKeever N647 | 19 Aug 1962 | United States of America | Massachusetts | Nantucket Co. | — | 1888660 |
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| Anaphalis margaritacea (L.) Benth. & Hook.f. | F. C. MacKeever MV19 | 24 Aug 1958 | United States of America | Massachusetts | West Tisbury, Martha's Vineyard | — | 1888656 |
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| Andropogon glomeratus var. glomeratus | F. C. MacKeever 712 | 31 Aug 1965 | United States of America | Massachusetts | West Tisbury, Martha's Vineyard. | — | 1639512 |
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| Andropogon glomeratus var. glomeratus | F. C. MacKeever 62N | 09 Sep 1958 | United States of America | Massachusetts | "Hidden Forest", Nantucket Island, Massachusetts | — | 1639559 |
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| Andropogon glomeratus var. glomeratus | F. C. MacKeever 89 | 10 Sep 1958 | United States of America | Massachusetts | Pond west of Gibbs Pd.,… | — | 1639591 |
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| Anemone quinquefolia L. var. quinquefolia | F. C. MacKeever MV212 | 25 May 1959 | United States of America | Massachusetts | Dukes Co. Tabor House Road,… | — | 2740627 |
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| Anemone quinquefolia L. var. quinquefolia | F. C. MacKeever N958 | 06 May 1966 | United States of America | Massachusetts | Nantucket Co. Nantucket Island | — | 2740628 |
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| Anemone quinquefolia L. var. quinquefolia | F. C. MacKeever N250 | 31 May 1959 | United States of America | Massachusetts | Nantucket Co. Tom Nevers Pd.,… | — | 2740630 |
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| Anomodon attenuatus (Hedw.) Hübener | F. C. MacKeever | Spring 1952 | United States of America | Connecticut | Fairfield Co. Devil's Den | — | 507282 | ||
| Antennaria howellii subsp. neodioica (Greene) R.J.Bayer | F. C. MacKeever 250 | May 26, 1959 | United States of America | Massachusetts | Chilmark, Martha's Vineyard | — | 1890349 |
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| Antennaria howellii subsp. petaloidea (Fernald) R.J.Bayer | F. C. MacKeever 174 | May 23, 1959 | United States of America | Massachusetts | West Tisbury, Martha's Vineyard. | — | 1890589 |
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