Displaying 1 - 75 out of 298 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Exobasidium bullatum Linder | D. H. Linder | I. M. Johnston | 04 Aug 1937 | United States of America | Massachusetts | Barnstable Co. | type |
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| Exobasidium bullatum Linder | D. H. Linder | I. M. Johnston | 04 Aug 1937 | United States of America | Massachusetts | Plymouth Co. Long Pond | possible type |
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| Exobasidium bullatum Linder | D. H. Linder | I. M. Johnston | 04 Aug 1937 | United States of America | Massachusetts | Near Harwich | possible type |
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| Exobasidium uvae-ursi var. bisporum Linder | D. H. Linder | I. M. Johnston | 04 Aug 1937 | United States of America | Massachusetts | Barnstable Co. | — | ||||
| Hydrocoleum codicola Setch. & N.L.Gardner | I. M. Johnston [8a] | [Jun] | Mexico | Baja California Sur | San Marcos Island | probable isotype |
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| Agaricus campestris L.:Fr. | I. M. Johnston 1 | 01 Dec 1918 | United States of America | California | Evey Canyon, San Antonio Mts,… | — |
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| Sargassum guardiense Setch. & N.L.Gardner | I. M. Johnston 2 | 29 Jun 1921 | Mexico | — | Gulf of California, Puerto Refugio | isotype |
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| Hygrohypnum peruviense R.S.Williams | I. M. Johnston 4 | 08 Jan 1926-10 Jan 1926 | Chile | — | Atacama. Vallenar. Vicinity of Laguna… | not a type | ||||
| Boletus flaviporus Earle | I. M. Johnston 6 | 01 Dec 1918 | United States of America | California | Los Angeles Co. San Antonio… | — | ||||
| Hydrocoleum codicola Setch. & N.L.Gardner | I. M. Johnston 8 a | s.d. | Mexico | Baja California Sur | San Marcos Island | type |
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| Russula paxilloides Earle | I. M. Johnston 9 | 01 Dec 1918 | United States of America | California | Los Angeles Co. Evey Cañon,… | — | ||||
| Suillus granulatus (L.:Fr.) Kuntze | I. M. Johnston 20 | 08 Dec 1918 | United States of America | California | San Bernardino Co. | — | ||||
| Grateloupia prolongata J.Agardh | I. M. Johnston 25 | Jun | Mexico | Baja California | San Francisquito Bay | — |
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| Boletus rubellus Krombh. | I. M. Johnston 28 | 21 Dec 1918 | United States of America | California | Live Oak Canon, San Antonio… | — | ||||
| Marasmius plicatulus Peck | I. M. Johnston 32 | 22 Dec 1918 | United States of America | California | San Antonio Mountains | — |
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| Miconia minutiflora (Bonpl.) DC. | I. M. Johnston 32 | 6 Oct 1944 | Panama | Panamá | Bald Hill, San Jose Island,… | — |
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| Armillaria putrida (Scop.) Murrill | I. M. Johnston 33 | 22 Dec 1918 | United States of America | California | Los Angeles Co. Claremont | — |
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| Clidemia rubra (Aubl.) Mart. | I. M. Johnston 34 | 06 Oct 1944 | Panama | — | San Jose Island, Perlas archipelago,… | — | ||||
| Pleurotus ostreatus (Jacq.:Fr.) P.Kumm. | I. M. Johnston 35 | s.d. | United States of America | California | Los Angeles Co. Claremont | — |
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| Cordylecladia lemanaeformis (Bory) M.Howe | I. M. Johnston 35 | Jun 1921 | Mexico | Baja California | Lower California, Los Angeles Bay | — |
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| Miconia lacera (Bonpl.) Naudin | I. M. Johnston 35 | 6 Oct 1944 | Panama | — | Bald Hill at edge of… | — |
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| Boletus rubellus Krombh. | I. M. Johnston 36 | 30 Dec 1918 | United States of America | California | Los Angeles Co. | — | ||||
| Boletus flaviporus Earle | I. M. Johnston 37 | 22 Dec 1918 | United States of America | California | Los Angeles Co. San Antonio… | — | ||||
| Boletus rubellus Krombh. | I. M. Johnston 38 | 29 Dec 1918 | United States of America | California | Live Oak Canon, San Antonio… | — | ||||
| Boletus rubellus Krombh. | I. M. Johnston 39 | 29 Dec 1918 | United States of America | California | Live Oak Canon, San Antonio… | — | ||||
| Boletus flaviporus Earle | I. M. Johnston 40 | 29 Dec 1918 | United States of America | California | Live Oak Cañon, San Antonio… | — | ||||
| Omphalotus olivascens H.E.Bigelow, O.K.Mill. & Thiers | I. M. Johnston 42 | 29 Dec 1918 | United States of America | California | Live Oak Cañon, San Antonio… | — |
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| Boletus rubellus Krombh. | I. M. Johnston 43 | 30 Dec 1918 | United States of America | California | Los Angeles Co. Mouth of… | — | ||||
| Hypholoma capnoides (Fr.) Quél. | I. M. Johnston 57 | 01 Dec 1918 | United States of America | California | San Antonio Mts. | — | ||||
| Miconia lacera (Bonpl.) Naudin | I. M. Johnston 61 | 7 Oct 1944 | Panama | — | Main beach, shaded base of… | — |
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| Gracilaria johnstonii Setch. & N.L.Gardner | I. M. Johnston 62 | 02 Jul 1921 | Mexico | — | Gulf of California, Isla Partida,… | isotype |
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| Euphorbia antisiphylitica Zucc. | I. M. Johnston 63 | 09 Aug 1940 | Mexico | Chihuahua | Sierra San Carlos; road to… | — |
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| Acrosorium uncinatum (W.B.Turner) Kylin | I. M. Johnston 65 | 07 Apr 1921 | Mexico | Baja California | Ensenada Bay, Baja California | — |
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| Sargassum johnstonii Setch. & N.L.Gardner | I. M. Johnston 71 | 27 Apr 1921 | Mexico | Sonora | At Georges Island | isotype |
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| Sargassum herporhizum Setch. & N.L.Gardner | I. M. Johnston 72 | 27 Apr 1921 | Mexico | Sonora | At Georges Island | isotype |
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| Clidemia octona (Bonpl.) L.O.Williams | I. M. Johnston 75 | 9 Oct 1944 | Panama | Panamá | M - Area Road; San… | — |
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| Padina durvillei Bory | I. M. Johnston 76 | s.d. | Mexico | — | Gulf of California | — |
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| Piper subtrinerve Trel. | I. M. Johnston 81 | 09 Oct 1944 | Panama | — | San Jose Island. Pelas archipelago,… | — |
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| Cystopteris fragilis (L.) Bernh. | I. M. Johnston 84 | 01 Apr 1917 | United States of America | California | Cucamonga Canon (Charcoal Fork) | — |
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| Codium anastomosans Setch. & N.L.Gardner | I. M. Johnston 84 e | Jun | United States of America | California | Angel de la Guarda, Puerto… | — |
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| Eucheuma uncinatum Setch. & N.L.Gardner | I. M. Johnston 86 | s.d. | Mexico | Baja California | Gulf of California, north San… | photo of possible type |
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| Grateloupia prolongata J.Agardh | I. M. Johnston 87 | 02 Jul 1921 | Mexico | Baja California Sur | Isla Partida | — |
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| Cryptoporus volvatus (Peck) Shear | I. M. Johnston 111 | 28 Nov 1918 | United States of America | California | Los Angeles Co. Claremont | — |
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| Tulostoma campestre Morgan | I. M. Johnston 208 | 17 Mar 1918 | United States of America | California | Los Angeles Co. Red Hill… | — |
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| Trametes hirsuta (Wulfen:Fr.) Lloyd | I. M. Johnston 217 | 17 Nov 1918 | United States of America | California | Evey Canyon, San Antonio Mts,… | — |
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| Poria johnstonii Murrill | I. M. Johnston 252 | 15 Dec 1918 | United States of America | California | Upper San Antonio Canyon, San… | type |
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| Piper aequale Vahl | I. M. Johnston 262 | 22 Oct 1944 | Panama | — | San Jose Island, Pelas archipelago,… | — |
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| Miconia hyperprasina Naudin | I. M. Johnston 268 | 23 Oct 1944 | Panama | Panamá | San Jose Island, Perlas archipelago,… | — |
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| Cryptantha minima Rydb. | I. M. Johnston 314-W | 11 Jul 1934 | United States of America | Wyoming | Cheyenne. | — |
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| Piper marginatum Jacq. | I. M. Johnston 319 | 29 Oct 1944 | Panama | — | San Jose Island. Pelas archipelago,… | — |
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| Piper arboreum var. hirtellum Trel. & Yunck. | I. M. Johnston 424 | 08 Nov 1944 | Panama | — | San Jose Island, Perlas archipelago,… | — |
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| Conostegia speciosa Naudin | I. M. Johnston 446 | 10 Nov 1944 | Panama | — | M-Area road. San Jose Island,… | — |
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| Miconia insularis Gleason | I. M. Johnston 448 | 10 Nov 1944 | Panama | — | M-area Road, San Jose Island,… | holotype |
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| Muhlenbergia alopecuroides (Griseb.) P.M.Peterson & Columbus | I. M. Johnston 460 | August 20-26, 1940 | Mexico | Coahuila | End of road from T.… | — |
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| Leandra mexicana (Naudin) Cogn. | I. M. Johnston 461 | 11 Nov 1944 | Panama | Panamá | Little Butch trail, San Jose… | — |
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| Piper marginatum Jacq. | I. M. Johnston 472 | 12 Nov 1944 | Panama | — | San Jose Island. Pelas archipelago,… | — |
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| Viguiera annua (M.E.Jones) S.F.Blake | I. M. Johnston 530 | 22 Aug 1940 | Mexico | Coahuila | Sierra del Pino, 2-10 mi… | — | ||||
| Miconia argentea (Sw.) DC. | I. M. Johnston 535 | 24 Mar 1945 | Panama | — | San Jose Island, Perlas archipelago,… | — |
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| Piper arboreum var. hirtellum Trel. & Yunck. | I. M. Johnston 594 | 30 Mar 1945 | Panama | — | San Jose Island, Perlas archipelago,… | — |
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| Piper arboreum var. angustifolium [ined.] | I. M. Johnston 656 | 06 Apr 1945 | Panama | — | San Jose Island, Perlas archipelago,… | — |
![Piper arboreum var. angustifolium [ined.]](https://sweetgum.nybg.org/images3/3579/583/04128007.thumb.jpg)
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| Piper aequale Vahl | I. M. Johnston 717 | 16 Apr 1945 | Panama | — | San Jose Island, Pelas archipelago,… | — |
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| Henriettea succosa (Aubl.) DC. | I. M. Johnston 740 | 19 Apr 1945 | Panama | — | San Jose Island, Pearl Archipelago,… | — |
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| Miconia prasina (Sw.) DC. | I. M. Johnston 760 | 23 Apr 1945 | Panama | — | San Jose Island, Perlas archipelago,… | — |
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| Miconia hyperprasina Naudin | I. M. Johnston 762 | 23 Apr 1945 | Panama | Panamá | San Jose Island, Perlas archipelago,… | — |
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| Miconia argentea (Sw.) DC. | I. M. Johnston 766 | 23 Apr 1945 | Panama | — | Dead End Road. San Jose… | — |
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| Miconia prasina (Sw.) DC. | I. M. Johnston 770 | 24 Apr 1945 | Panama | — | Bald Hill Road. San Jose… | — |
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| Atriplex stewartii I.M.Johnst. | I. M. Johnston 777 | 28 Aug 1940 | Mexico | Coahuila | Eastern border of the Llano… | isotype |
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| Opuntia | I. M. Johnston 1004 | 05 Sep 1940 | Mexico | Coahuila | Vicinity of San Jose, southeast… | — |
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| Piper allenii Trel. | I. M. Johnston 1019 | 02 Jan 1946 | Panama | — | San Jose Island, Perlas archipelago,… | — |
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| Clidemia octona (Bonpl.) L.O.Williams | I. M. Johnston 1027 | 03 Jan 1946 | Panama | — | San Jose Island, Perlas archipelago,… | — |
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| Astragalus lentiginosus var. coachellae Barneby | I. M. Johnston 1065 | 04 Apr 1917 - 06 Apr 1917 | United States of America | California | Whitewater | — |
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| Atriplex reptans I.M.Johnst. | I. M. Johnston 1081 | 09 Sep 1940 | Mexico | Coahuila | Along road from San Vicente… | holotype |
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| Miconia minutiflora (Bonpl.) DC. | I. M. Johnston 1097 | 9 Jan 1946 | Panama | Panamá | road a half mile from… | — |
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| Miconia prasina (Sw.) DC. | I. M. Johnston 1111 | 11 Jan 1946 | Panama | — | South Road along area 2A.… | — |
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| Miconia hyperprasina Naudin | I. M. Johnston 1133 | 14 Jan 1945 | Panama | — | San Jose Island, Perlas archipelago,… | — |
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