Displaying 201 - 225 out of 298 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Machaeranthera pinnatifida (Hook.) Shinners | I. M. Johnston 3930 | 27 May 1921 | Mexico | Baja California Sur | San Diego Island | — |
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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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| Euphorbia incerta Brandegee | I. M. Johnston 3944 | 30 May 1921 | Mexico | Baja California Sur | La Paz Mun. San Francisco… | — |
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| Marina parryi (Torr. & A.Gray) Barneby | I. M. Johnston 3948 | 30 May 1921 | Mexico | — | San Francisco Island, Gulf of… | — | ||||
| Euphorbia polycarpa Benth. | I. M. Johnston 3977 | 31 May 1921 | Mexico | Baja California Sur | La Paz Mun. Espiritu Santo… | — |
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| Brickellia brandegei B.L.Rob. | I. M. Johnston 4004 | 1 Jun 1921 | Mexico | Baja California Sur | San Gabriel Bay, Espiritu Santo… | — |
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| Euphorbia leucophylla subsp. comcaacorum V.W.Steinm. & Felger | I. M. Johnston 4009 | 4 Jun 1921 | Mexico | Baja California Sur | La Paz Mun. Sand dunes… | — |
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| Gochnatia arborescens Brandegee | I. M. Johnston 4023 | 6 Jun 1921 | Mexico | — | Gordas pt. 0.5 mi. N | — |
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| Porophyllum gracile Benth. | I. M. Johnston 4024 | 6 Jun 1921 | Mexico | Baja California Sur | 1/2 mi N of Type… | — | ||||
| Bebbia atriplicifolia (A.Gray) Greene | I. M. Johnston 4026 | 6 Jun 1921 | Mexico | Baja California Sur | Ceraldo Island | — |
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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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| 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 Benth. | I. M. Johnston 4044 | 7 Jun 1921 | Mexico | Baja California Sur | La Paz Mun. Ceralbo Island… | — |
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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 | ||||
| Perityle crassifolia var. robusta (Rydb.) Everly | I. M. Johnston 4081 | 9 Jun 1921 | Mexico | Baja California Sur | Espiritu Santo Island, Candeleros bay | — | ||||
| Prosopis articulata S.Watson | I. M. Johnston 4087 | 10 Jun 1921 | Mexico | Baja California Sur | La Paz Mun. San Evaristo… | — | ||||
| Perityle lobata (Rydb.) I.M.Johnst. | I. M. Johnston 4115 | 14 Jun 1921 | Mexico | Baja California | Ensenada Mun. Puerto Escondido | — | ||||
| Croton magdalenae Millsp. | I. M. Johnston 4143 | 15 Jun 1921 | Mexico | — | Gulf of California. Carmen Island.… | — |
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| Euphorbia magdalenae Benth. | I. M. Johnston 4153 | 17 Jun 1921 | Mexico | Baja California Sur | Mulege Mun. Guadelupe Pt., Concepcion… | — |
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| Bursera microphylla A.Gray | I. M. Johnston 4168 | 18 Jun 1921 | Mexico | — | Coyote Bay, Concepcion Bay. | — |
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| Peniocereus striatus (Brandegee) Buxb. | I. M. Johnston 4179 | 28 Jun 1921 | United States of America | California | about 0.5 mile from shore | — |
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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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| Argythamnia lanceolata (Benth.) Müll.Arg. | I. M. Johnston 4209 | 30 Jun 1921 | Mexico | Baja California | Mexicali Mun. Angel de la… | — |
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