Displaying 176 - 200 out of 298 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Acacia willardiana Rose | I. M. Johnston 4334 | 7 Jul 1921 | Mexico | Sonora | Guaymas Mun. San Pedro Bay,… | — | ||||
| Lysiloma candidum Brandegee | I. M. Johnston 4294 | 7 Jul 1921 | Mexico | Sonora | Guaymas Mun. San Pedro Bay,… | — |
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| Lysiloma divaricatum (Jacq.) J.F.Macbr. | I. M. Johnston 4313 | 7 Jul 1921 | Mexico | Sonora | Guaymas Mun. San Pedro Bay,… | — |
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| Acacia pringlei subsp. californica (Brandegee) Y.S.Lee, Seigler & Ebinger | I. M. Johnston 4333 | 7 Jul 1921 | Mexico | Sonora | Guaymas Mun. San Pedro Bay,… | — | ||||
| Sabal uresana Trel. | I. M. Johnston 4345 | 08 Jul 1921 | Mexico | Sonora | San Carlos Bay. Small colony… | — |
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| Pleurocoronis pluriseta (A.Gray) R.M.King & H.Rob. | I. M. Johnston 3326 | 29 Aug 1921 | Mexico | Baja California | San Luis Gonzalez Bay | — |
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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 4373 | 1921 | Mexico | Sonora | San Carlos Bay | 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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| Echinocereus scopulorum Britton & Rose | I. M. Johnston 3103 | 1921 | Mexico | — | Lower California [Baja California] | — |
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| Codium cylindricum Holmes | I. M. Johnston s.n. | 1921 | Mexico | — | Gulf of California, Angel de… | — |
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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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| Disciseda uplandii (Lloyd) Zeller | I. M. Johnston 5552 | 21 May 1922 | United States of America | California | Hemet Valley, San Jacinto Mts. | — | ||||
| Selaginella standleyi Maxon | I. M. Johnston 3903 | 06 Aug 1922 | United States of America | Colorado | Pikes Peak; on meadow just… | — |
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| Carex cryptosperma Zika, D.S.Bell & L. J. Gross | I. M. Johnston s.n. | 05 Jul 1924 | United States of America | California | San Bernardino Co. Bluff Lake,… | — |
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| Polystichum scopulinum (D.C. Eaton) Maxon | I. M. Johnston s.n. | 05 Jul 1924 | United States of America | California | Slopes above Bluff Lake, San… | — |
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| Arctostaphylos tomentosa (Pursh) Lindl. | I. M. Johnston s.n. | 13 Aug 1924 | United States of America | California | Sunset Trail, 1.5 mi S… | — |
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| Helianthus nuttallii subsp. parishii (A.Gray) Heiser | I. M. Johnston s.n. | 02 Sep 1924 | United States of America | California | San Bernardino Co. 2 miles… | — |
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| Monardella australis subsp. jokerstii Elvin & A.C.Sanders | I. M. Johnston 5118 | 22 Jul 1925 | United States of America | California | San Bernardino Co. Cucamonga Peak,… | paratype |
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| Geastrum recolligens (J.Sowerby) Desv. | I. M. Johnston s.n. | 05 Dec 1925 | Chile | — | Prov. Antofagasto, Dept. Taltal. Aguada… | — |
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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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| Astraeus hygrometricus (Pers.) Morgan | I. M. Johnston s.n. | 07 Dec 1925 | Chile | Antofagasta | El Rincon, just north of… | — |
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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,… | — |