Displaying 1 - 50 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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| Neomammillaria | I. M. Johnston 3369 | s.d. | Mexico | Baja California | Puerto Regugie, Angel Island | — |
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| Euphorbia magdalenae Benth. | I. M. Johnston 3828 | 22 May 1921 | Mexico | Baja California | Carmen Island, Puerto Ballandra | — |
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| Argythamnia brandeeei var. bandegeei Millsp. | I. M. Johnston 3402 | 2 May 1921 | Mexico | Baja California | The Lagoon, Isla Ángel de… | — |
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| Echinocereus maritimus (M.E.Jones) K.Schum. | I. M. Johnston 3007 | 7 Apr 1921 | Mexico | Baja California | Ensenada Mun. | — |
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| Acacia greggii A.Gray | I. M. Johnston 3419 | 3 May 1921 | Mexico | Baja California | Ensenada Mun. Angel de la… | — | ||||
| Perityle lobata (Rydb.) I.M.Johnst. | I. M. Johnston 4115 | 14 Jun 1921 | Mexico | Baja California | Ensenada Mun. Puerto Escondido | — | ||||
| Nicolletia trifida Rydb. | I. M. Johnston 3562 | 10 May 1921 | Mexico | Baja California | Ensenada Mun. San Francisquito Bay | — | ||||
| Euphorbia petrina S.Watson | I. M. Johnston 3363 | 30 Apr 1921 | Mexico | Baja California | Mexicali Mun. Isla Ángel de… | — |
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| Euphorbia petrina S.Watson | I. M. Johnston 3404 | 2 May 1921 | Mexico | Baja California | Mexicali Mun. Angel de la… | — |
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| Euphorbia eriantha Benth. | I. M. Johnston 4208 | 30 Jun 1921 | Mexico | Baja California | Mexicali Mun. Angel de la… | — |
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| Euphorbia pediculifera Engelm. | I. M. Johnston 3331 | 29 Apr 1921 | Mexico | Baja California | Ensenada Mun. San Luis Gonzales… | — |
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| Euphorbia petrina S.Watson | I. M. Johnston 3316 | 28 Apr 1921 | Mexico | Baja California | Mexicali Mun. San Luis Island | — |
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| Argythamnia lanceolata (Benth.) Müll.Arg. | I. M. Johnston 4209 | 30 Jun 1921 | Mexico | Baja California | Mexicali Mun. Angel de la… | — |
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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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| Grateloupia prolongata J.Agardh | I. M. Johnston 25 | Jun | Mexico | Baja California | San Francisquito Bay | — |
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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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| Codium amplivesiculatum Setch. & N.L.Gardner | I. M. Johnston s.n. | 1921 | Mexico | Baja California | Gulf of California, floating near… | type |
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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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| Pithecellobium dulce (Roxb.) Benth. | I. M. Johnston 3903 | 26 May 1921 | Mexico | Baja California | Agua Verde Bay. | — |
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| Franseria bryantii Curran | I. M. Johnston 3548 | 10 May 1921 | Mexico | Baja California | San Francisquito Bay | — |
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| Neomammillaria | I. M. Johnston 3833 | s.d. | Mexico | Baja California | — |
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| Psorothamnus emoryi var. emoryi | I. M. Johnston 3344 | 29 Apr 1921 | Mexico | Baja California | San Luis Gonzales Bay | — | ||||
| Psorothamnus emoryi var. emoryi | I. M. Johnston 4231 | 30 Jun 1921 | Mexico | Baja California | Angel de la Guarda Island,… | — | ||||
| Porophyllum gracile Benth. | I. M. Johnston 3414 | 31 May 1921 | Mexico | Baja California | Ensenada Mun. Angel de la… | — | ||||
| Dalea mollis Benth. | I. M. Johnston 4235 | 30 Jun 1921 | Mexico | Baja California | Angel de la Guardia Island.… | — |
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