Displaying 1 - 25 out of 298 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Astraeus hygrometricus (Pers.) Morgan | I. M. Johnston s.n. | 07 Dec 1925 | Chile | Antofagasta | El Rincon, just north of… | — |
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| Tulostoma jourdani Pat. | I. M. Johnston s.n. | 05 Dec 1925 | Chile | Antofagasta | along trail to the old… | — |
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| Calvatia rugosa (Berk. & M.A.Curtis) D.A.Reid | I. M. Johnston | 07 Dec 1925 | Chile | Antofagasta | Antofagasta Prov. Taltal. El Rincon,… | — | ||||
| Colubrina californica I.M.Johnst. | I. M. Johnston 3496 | 08 May 1921 | Mexico | Baja California | Las Animas Bay | — |
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| Peniocereus johnstonii Britton & Rose | I. M. Johnston 3940 | 28 May 1921 | Mexico | Baja California | San Josef Island; Several miles… | type |
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| Peniocereus johnstonii Britton & Rose | I. M. Johnston 3940 | 28 May 1921 | Mexico | Baja California | San Josef Island; Several miles… | type |
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| Neomammillaria evermanniana Britton & Rose | I. M. Johnston 4058 | 1921 | Mexico | Baja California | Ceralbo Island | isotype |
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| Neomammillaria evermanniana Britton & Rose | I. M. Johnston 4058 | 1921 | Mexico | Baja California | Ceralbo Island | photo of type | ||||
| Neomammillaria johnstonii Britton & Rose | I. M. Johnston 3542 | — | Mexico | Baja California | San Lorenzo Island | possible type |
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| Acacia brandegeana I.M.Johnst. | I. M. Johnston 3881 | 1921 | Mexico | Baja California | Agua Verde Bay | isotype |
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| Acacia brandegeana I.M.Johnst. | I. M. Johnston 3881 | 1921 | Mexico | Baja California | Agua Verde Bay | isotype |
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| Euphorbia polycarpa var. johnstonii L.C.Wheeler | I. M. Johnston 3867 | 24 May 1921 | Mexico | Baja California | Monserrate Island. Ensenada Blanca. | isotype |
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| Sargassum insulare Setch. & N.L.Gardner | I. M. Johnston s.n. | Jun 1921 | Mexico | Baja California | San Marcos Island | probable type |
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| Prosopis articulata S.Watson | I. M. Johnston 3434 | 5 May 1921 | Mexico | Baja California | Los Angeles Bay | — | ||||
| Ebenopsis confinis (Standl.) Barneby & J.W.Grimes | I. M. Johnston 3498 | 8 May 1921 | Mexico | Baja California | Las Animas Bay | — |
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| Psathyrotes ramosissima (Torr.) A.Gray | I. M. Johnston 3340 | 29 Apr 1921 | Mexico | Baja California | San Luis Gonzalez Bay | — |
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| Perityle crassifolia var. robusta (Rydb.) Everly | I. M. Johnston 3893 | 26 May 1921 | Mexico | Baja California | Baja California | — | ||||
| Pelucha trifida S.Watson | I. M. Johnston 3508 | 8 May 1921 | Mexico | Baja California | Las Animas Bay | — | ||||
| Errazurizia megacarpa (S.Watson) I.M.Johnst. | I. M. Johnston 3348 | 29 Apr 1921 | Mexico | Baja California | San Luis Gonzales Bay | — |
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| Errazurizia megacarpa (S.Watson) I.M.Johnst. | I. M. Johnston 3579 | 10 May 1921 | Mexico | Baja California | San Francisquito Bay | — | ||||
| Psorothamnus emoryi var. arenarius (Brandegee) Barneby | I. M. Johnston 3715 | 16 May 1921 | Mexico | Baja California | San Nicholas Bay | — | ||||
| Physalis crassifolia var. infundibularis I.M.Johnst. | I. M. Johnston 3325 | April 29, 1921 | Mexico | Baja California | San Luis Gonzalez Bay | — |
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| Sapium biloculare var. amplum I.M.Johnst. | I. M. Johnston 3772 | 19 May 1921 | Mexico | Baja California | Loreto | isotype |
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| Ferocactus wislizeni (Engelm.) Britton & Rose | I. M. Johnston 3454 | 5 May 1921 | Mexico | Baja California | Los Angeles Bay | — |
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| Neomammillaria albicans Britton & Rose | I. M. Johnston 3923 | 27 May 1921 | Mexico | Baja California | San Diego Island | — |
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