Displaying 1 - 75 out of 170 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Alaria esculenta (L.) Grev. | D. S. Johnson s.n. | 1911 | United States of America | Maine | Cumberland Co. South Harpswell | — |
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| Asplenium cristatum Lam. | D. S. Johnson s.n. | 02 Jun 1906 | Jamaica | — | Clyde Valley | — |
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| Asplenium cuspidatum Lam. | D. S. Johnson s.n. | 26 May 1906 | Jamaica | — | Vinegar Hill Road | — |
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| Asplenium pteropus Kaulf. | D. S. Johnson s.n. | 02 Jun 1906 | Jamaica | — | Clyde Valley | — |
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| Bangia fuscopurpurea (Dillwyn) Lyngb. | D. S. Johnson 11 | 1923 | United States of America | Maine | Mt. Desert Island | — |
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| Bangia fuscopurpurea (Dillwyn) Lyngb. | D. S. Johnson 3 | 1923 | United States of America | Maine | Mt. Desert Island | — |
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| Breutelia tomentosa (Sw. ex Brid.) A.Jaeger | D. S. Johnson 7 | 23 Apr 1903 | Jamaica | — | Near Morce's Gap | — | ||||
| Bryopsis plumosa (Huds.) C.Agardh | D. S. Johnson s.n. | Aug 1899 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Bryopsis plumosa (Huds.) C.Agardh | D. S. Johnson s.n. | 17 Jul 1907 | United States of America | New York | Suffolk Co. Cold Spring Harbor,… | — |
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| Calliarthron cheilosporioides Manza | D. S. Johnson s.n. | 11 Jul 1934 | United States of America | Washington | False Bay, Friday Harbor | — |
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| Calliarthron cheilosporioides Manza | D. S. Johnson s.n. | Jul 1915 | United States of America | California | Monterey Co. Carmel | — |
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| Callithamnion cruciatum C.Agardh | D. S. Johnson s.n. | 1907 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Callithamnion roseum (Roth) Lyngb. | D. S. Johnson s.n. | 1902 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Campyloneurum angustifolium (Sw.) Fée | D. S. Johnson s.n. | 16 May 1906 | Jamaica | — | Whitfield Hall Works | — |
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| Campyloneurum angustifolium (Sw.) Fée | D. S. Johnson s.n. | 16 May 1906 | Jamaica | — | Farm Hill Works | — |
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| Campyloneurum chrysopodium (Klotzsch) Fée | D. S. Johnson s.n. | 26 May 1906 | Jamaica | — | Vinegar Hill Road | — |
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| Caulerpa | D. S. Johnson s.n. | Jun 1906 | Jamaica | — | Old Harbor | — |
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| Caulerpa sertularioides (S.G.Gmel.) M.Howe | D. S. Johnson s.n. | 1932 | Jamaica | — | — |
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| Ceramium botryocarpum A.W.Griffiths ex Harv. | D. S. Johnson 12 p.p. | s.d. | United States of America | Maine | Mt. Desert Island | — |
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| Ceramium rubrum C.Agardh | D. S. Johnson 5 | 1923 | United States of America | Maine | Mt. Desert Island | — |
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| Chaetomorpha aerea (Dillwyn) Kütz. | D. S. Johnson s.n. | 23 Jul 1907 | United States of America | New York | Suffolk Co. Lloyds Point | — |
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| Chaetomorpha tortuosa Kütz. | D. S. Johnson 4 | 1923 | United States of America | Maine | Mt. Desert Island | — |
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| Chaetomorpha tortuosa Kütz. | D. S. Johnson 17 | 1923 | United States of America | Maine | Mt. Desert Island | — |
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| Chantransia virgatula (Harv.) Thur. | D. S. Johnson s.n. | Aug 1899 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Chondria tenuissima C.Agardh | D. S. Johnson s.n. | 1902 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Chondria tenuissima C.Agardh | D. S. Johnson s.n. | Aug 1899 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Chondrus crispus Stackh. | D. S. Johnson s.n. | 31 Aug 1909 | United States of America | Maine | Cumberland Co. Mere Point | — |
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| Cladophora crispata (Roth) Kütz. | D. S. Johnson s.n. | s.d. | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Cladophora expansa (Mert.) Kütz. | D. S. Johnson s.n. | 05 Aug 1907 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Cladophora pulverulenta (Mertens) H.K.Phinney | D. S. Johnson s.n. | Aug 1923 | United States of America | Maine | Hancock Co. Mount Desert Island | — |
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| Cladophora rupestris (L.) Kütz. | D. S. Johnson s.n. | 08 Sep 1930 | United Kingdom | England | Isle of Wight, Freshwater Bay | — |
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| Codiolum longipes Foslie | D. S. Johnson 2 | 1923 | United States of America | Maine | Mt. Desert Island | — |
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| Codium fragile subsp. californicum (J.Agardh) Suringar | D. S. Johnson s.n. | 12 Jul 1934 | United States of America | Washington | San Juan Co. Friday Harbor | — |
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| Coleochaete irregularis Pringsh. | D. S. Johnson s.n. | Jul 1902 | United States of America | New York | Cold Spring Harbor; Long Island | — |
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| Coleochaete nitellarum Jost | D. S. Johnson s.n. | Jul 1902 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Corallina officinalis L. | D. S. Johnson s.n. | Aug 1912 | United States of America | Maine | Cumberland Co. Harpswell | — |
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| Cystoclonium | D. S. Johnson s.n. | Aug 1899 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Dasya elegans (G.Martens) C.Agardh | D. S. Johnson s.n. | Aug 1899 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Dasya elegans (G.Martens) C.Agardh | D. S. Johnson s.n. | 16 Oct 1927 | United States of America | Maryland | Anne Arundel Co. Gibson Island | — |
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| Delesseria alata (Huds.) J.V.Lamour. | D. S. Johnson s.n. | Aug 1914 | United States of America | Maine | Cumberland Co. Casco Bay, Ragged… | — |
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| Delesseria alata (Huds.) J.V.Lamour. | D. S. Johnson s.n. | 06 Aug 1914 | United States of America | Maine | Cumberland Co. Casco Bay, Ragged… | — |
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| Delesseria sinuosa J.V.Lamour. | D. S. Johnson s.n. | 06 Aug 1914 | United States of America | Maine | Cumberland Co. Casco Bay, Ragged… | — |
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| Dennstaedtia globulifera (Poir.) Hieron. | D. S. Johnson s.n. | 02 Mar 1906 | Jamaica | — | Clyde Valley | — |
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| Desmarestia aculeata (L.) J.V.Lamour. | D. S. Johnson s.n. | 07 Aug 1928 | United States of America | Maine | Hancock Co. Mount Desert Island,… | — |
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| Desmarestia ligulata (Stackh.) J.V.Lamour. | D. S. Johnson s.n. | 11 Jul 1934 | United States of America | Washington | San Juan Co. Friday Harbor | — |
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| Dictyosiphon hippuroides (Lyngb.) Kütz. | D. S. Johnson s.n. | 07 Aug 1928 | United States of America | Maine | Hancock Co. Mount Desert Island | — |
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| Dictyota dichotoma (Huds.) J.V.Lamour. | D. S. Johnson s.n. | 1899 | United States of America | North Carolina | Carteret Co. Beaufort | — |
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| Dictyota dichotoma (Huds.) J.V.Lamour. | D. S. Johnson s.n. | 15 Jun 1899 | United States of America | North Carolina | Carteret Co. Beaufort | — |
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| Diphyscium dominghense (Brid.) W.R.Buck & Steere | D. S. Johnson 15 | 5/8/1906 | Jamaica | — | Clyde Valley. | — | ||||
| Dumontia incrassata (O.F.Müll.) J.V.Lamour. | D. S. Johnson 7 | 09 Jul 1929 | United States of America | Maine | Mt. Desert Island | — |
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| Elachista fucicola (Velley) Aresch. | D. S. Johnson 13 | 1923 | United States of America | Maine | Mt. Desert Island | — |
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| Elachista lubrica Rupr. | D. S. Johnson 14 | 1923 | United States of America | Maine | Hancock Co. Mount Desert Island. | — |
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| Elaphoglossum latifolium (Sw.) J.Sm. | D. S. Johnson s.n. | 26 Apr 1903 | Jamaica | — | Morces Gap | — |
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| Elaphoglossum tectum (Humb. & Bonpl. ex Willd.) T.Moore | D. S. Johnson s.n. | 04 May 1906 | Jamaica | — | Cinchona | — |
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| Enteromorpha | D. S. Johnson s.n. | 24 Aug 1930 | United Kingdom | England | from pool beside Cam | — |
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| Enteromorpha | D. S. Johnson s.n. | Aug 1923 | United States of America | Maine | Hancock Co. Mount Desert Island | — |
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| Enteromorpha intestinalis (L.) Nees | D. S. Johnson s.n. | 1905 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Enteromorpha intestinalis (L.) Nees | D. S. Johnson s.n. | 1905 or 1906 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Erythrophyllum delesserioides J.Agardh | D. S. Johnson s.n. | 16 Jun 1915 | United States of America | California | Monterey Co. Carmel, Abalone Point | — |
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| Fissidens polypodioides Hedw. | D. S. Johnson 8 | 05 Jun 1903 | Jamaica | — | Morce's Gap | — | ||||
| Fosliella lejolisii (Rozanov) M.Howe | D. S. Johnson s.n. | 28 Jul 1908 | United States of America | New York | Suffolk Co. Cold Spring Harbor,… | — |
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| Fragillaria striatula Lyngb. | D. S. Johnson 2 | 1923 | United States of America | Maine | Mt. Desert Island | — |
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| Frullania atrata (Sw.) Dumort. | D. S. Johnson 16 | 01 May 1906 | Jamaica | — | Sir John Peak | — | ||||
| Fucus | D. S. Johnson s.n. | 1911 | United States of America | Maine | Cumberland Co. South Harpswell | — |
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| Fucus | D. S. Johnson s.n. | 1911 | United States of America | Maine | Cumberland Co. South Harpswell | — |
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| Fucus | D. S. Johnson s.n. | 1911 | United States of America | Maine | Cumberland Co. South Harpswell | — |
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| Fucus | D. S. Johnson 14 | 1928 | United States of America | Maine | Hancock Co. Mount Desert Island,… | — |
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| Fucus | D. S. Johnson s.n. | 31 Aug 1909 | United States of America | Maine | Cumberland Co. Mere Point | — |
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| Fucus | D. S. Johnson s.n. | Jul 1906 | United States of America | New York | Suffolk Co. Lloyds Point | — |
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| Fucus edentatus | D. S. Johnson s.n. | 1911 | United States of America | Maine | Cumberland Co. South Harpswell | — |
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| Fucus evanescens C.Agardh | D. S. Johnson s.n. | 1902 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Fucus vesiculosus L. | D. S. Johnson s.n. | 1902 | United States of America | New York | Suffolk Co. Long Island, Cold… | — |
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| Fucus vesiculosus L. | D. S. Johnson s.n. | 31 Aug 1909 | United States of America | Maine | Cumberland Co. Mere Point | — |
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| Fucus vesiculosus L. | D. S. Johnson s.n. | 1902 | United States of America | New York | Suffolk Co. Lloyds Harbor | — |
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| Gigartina radula (Esper) J.Agardh | D. S. Johnson s.n. | 16 Jun 1915 | United States of America | California | Monterey Co. Carmel, Abalone Point | — |
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