Displaying 1 - 75 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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| 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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| Hygrohypnum peruviense R.S.Williams | I. M. Johnston 4 | 08 Jan 1926-10 Jan 1926 | Chile | — | Atacama. Vallenar. Vicinity of Laguna… | not a type | ||||
| 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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| Cercidium praecox (Ruiz & Pav.) Harms | I. M. Johnston 3592 | 11 May 1921 | Mexico | — | Tortuga Island, Baja California. | — |
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| Hydrocoleum codicola Setch. & N.L.Gardner | I. M. Johnston [8a] | [Jun] | Mexico | Baja California Sur | San Marcos Island | probable isotype |
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| Cercidium molle I.M.Johnst. | I. M. Johnston 3877 | 26 May 1921 | Mexico | — | Agua Verde Bay, Baja California. | isotype |
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| Houstonia gracillima I.M.Johnst. | I. M. Johnston 3927 | 27 May 1921 | Mexico | — | Gulf of California. San Diego… | isotype |
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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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| Eriogonum galioides I.M.Johnst. | I. M. Johnston 3315 | 28 Apr 1921 | Mexico | — | Gulf of California; San Luis… | isotype |
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| Sartwellia humilis I.M.Johnst. | I. M. Johnston 7634 | 12 Sep 1938-13 Sep 1938 | Mexico | Coahuila | Road from state boundary, near… | 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 | ||||
| Jacquemontia eastwoodiana I.M.Johnst. | I. M. Johnston 3742 | 17 May 1921 | Mexico | — | Gulf of California: Ildefouso Island,… | isotype |
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| Hofmeisteria filifolia I.M.Johnst. | I. M. Johnston 3418 | 03 May 1921 | Mexico | — | Angel de la Guardia Island:… | isotype |
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| Neomammillaria johnstonii Britton & Rose | I. M. Johnston 4373 | 1921 | Mexico | Sonora | San Carlos Bay | type |
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| Neomammillaria johnstonii Britton & Rose | I. M. Johnston 3542 | — | Mexico | Baja California | San Lorenzo Island | possible type |
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| Neomammillaria cerralboa Britton & Rose | I. M. Johnston 4038 | 06 Jun 1921 | Mexico | — | Gordas Point, 0.5 mile north;… | holotype |
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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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| Coldenia canescens var. subnuda I.M.Johnst. | I. M. Johnston 3731 | 16 May 1921 | Mexico | — | San Nicholas Bay, Baja California | 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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| Acacia brandegeana I.M.Johnst. | I. M. Johnston 3881 | 1921 | Mexico | Baja California | Agua Verde Bay | isotype |
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| Coldenia cuspidata I.M.Johnst. | I. M. Johnston 3617 | 12 May 1921 | Mexico | — | Lower California: San Marcos Island | isotype |
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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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| Fagonia densa I.M.Johnst. | I. M. Johnston 3532 | 09 May 1921 | Mexico | — | South San Lorenzo Island, Gulf… | isotype |
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| Frankenia gypsophila I.M.Johnst. | I. M. Johnston 7614 | 12 Sep 1938 | Mexico | San Luis Potosí | 6 miles north of San… | isotype |
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| Passiflora arida var. cerralbensis Killip | I. M. Johnston 4043 | 07 Jun 1921 | Mexico | — | [Baja California]: Cerralbo Island, Ruffo's… | 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 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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| 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 | — | ||||
| Peucephyllum schottii A.Gray | I. M. Johnston 3375 | 1 May 1921 | Mexico | Baja California Sur | Mulege. San Marcos Island Puerto… | — | ||||
| Perityle crassifolia var. robusta (Rydb.) Everly | I. M. Johnston 4081 | 9 Jun 1921 | Mexico | Baja California Sur | Espiritu Santo Island, Candeleros bay | — | ||||
| Lysiloma candidum Brandegee | I. M. Johnston 3613 | 12 May 1921 | Mexico | Baja California Sur | San Marcos Island, B. C.… | — |
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| Palafoxia linearis (Cav.) Lag. var. linearis | I. M. Johnston 3866 | 24 May 1921 | Mexico | Baja California Sur | Monserrate Island (Ensenada Blanca) | — | ||||
| Acacia willardiana Rose | I. M. Johnston 3125 | 17 Apr 1921 | Mexico | Sonora | San Pedro Nolasco | — | ||||
| Pelucha trifida S.Watson | I. M. Johnston 3151 | 18 Apr 1921 | Mexico | Sonora | San Pedro Martir Island | — | ||||
| Palafoxia linearis var. glandulosa B.L.Turner & M.I.Morris | I. M. Johnston 3264 | 23 Apr 1921 | Mexico | Sonora | Tiburon Island, Freshwater Bay | — | ||||
| Eragrostis pectinacea var. miserrima (E.Fourn.) Reeder | I. M. Johnston 7786 | 19 Sep 1938 | Mexico | Durango | Road from Bermejillo to Zaragoza… | — |
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| Bursera microphylla A.Gray | I. M. Johnston 4168 | 18 Jun 1921 | Mexico | — | Coyote Bay, Concepcion Bay. | — |
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| Bursera microphylla A.Gray | I. M. Johnston 3186 | 19 Apr 1921 | Mexico | Sonora | San Esteban Island | — | ||||
| Errazurizia megacarpa (S.Watson) I.M.Johnst. | I. M. Johnston 3294 | 25 Apr 1921 | Mexico | Sonora | Gulf of California, Tepoca 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 | — | ||||
| Marina parryi (Torr. & A.Gray) Barneby | I. M. Johnston 3948 | 30 May 1921 | Mexico | — | San Francisco Island, Gulf of… | — | ||||
| Marina parryi (Torr. & A.Gray) Barneby | I. M. Johnston 3187 | 19 Apr 1921 | Mexico | — | Gulf of California, San Esteban… | — | ||||
| Psorothamnus emoryi var. arenarius (Brandegee) Barneby | I. M. Johnston 3715 | 16 May 1921 | Mexico | Baja California | San Nicholas Bay | — | ||||
| Psorothamnus emoryi var. arenarius (Brandegee) Barneby | I. M. Johnston 4286 | 05 Jul 1921 | Mexico | Sonora | Kino Pt. | — | ||||
| 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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| Bouteloua chasei Swallen | I. M. Johnston 7592 | Sept. 11-12, 1938 | Mexico | San Luis Potosí | Road from Matehuala north to… | — |
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| Bouteloua dactyloides (Nutt.) Columbus | I. M. Johnston 7428 | Sept. 4-5, 1938 | Mexico | Zacatecas | Road from Sierra Hermosa southwest… | — |
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| Jouvea pilosa (J.Presl) Scribn. | I. M. Johnston 3825 | 23 May 1921 | Mexico | Baja California Sur | Carmen Island: San Francisco Bay | — |
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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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| Sapium biloculare var. amplum I.M.Johnst. | I. M. Johnston 3772 | 19 May 1921 | Mexico | Baja California | Loreto | isotype |
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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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| Sabal uresana Trel. | I. M. Johnston 4345 | 08 Jul 1921 | Mexico | Sonora | San Carlos Bay. Small colony… | — |
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| Echinocereus scopulorum Britton & Rose | I. M. Johnston 3103 | 1921 | Mexico | — | Lower California [Baja California] | — |
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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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| Opuntia leptocaulis DC. | I. M. Johnston 4341 | 07 Jul 1921 | Mexico | Sonora | San Pedro Bay | — |
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| Opuntia | I. M. Johnston 1004 | 05 Sep 1940 | Mexico | Coahuila | Vicinity of San Jose, southeast… | — |
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| Croton magdalenae Millsp. | I. M. Johnston 4143 | 15 Jun 1921 | Mexico | — | Gulf of California. Carmen Island.… | — |
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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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| Euphorbia carmenensis Rose | I. M. Johnston 3925 | 27 May 1921 | Mexico | Baja California Sur | San Diego Island | — |
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| Euphorbia carmenensis Rose | I. M. Johnston 3800 | 21 May 1921 | Mexico | Baja California Sur | Carmen Island, Puerto Ballandra | — |
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| Euphorbia leucophylla subsp. comcaacorum V.W.Steinm. & Felger | I. M. Johnston 4283 | 5 Jul 1921 | Mexico | Sonora | Kino Pt. On sand dunes. | — |
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