Displaying 1 - 25 out of 107 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Abronia umbellata Lam. | M. F. Spencer 905 | 25 May 1918 | United States of America | California | San Diego Co. Coronado | — |
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| Acamptopappus sphaerocephalus var. hirtellus S.F.Blake | M. F. Spencer 449 | 20 May 1917 | United States of America | California | In desert sand, Hesperia, Mohave… | — |
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| Achnatherum hymenoides (Roem. & Schult.) Barkworth | M. F. Spencer 829 | 27 Mar 1918 | United States of America | California | Riverside Co. Palm Springs | — |
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| Agoseris grandiflora (Nutt.) Greene var. grandiflora | M. F. Spencer 1157 | 31 May 1919 | United States of America | California | San Diego Co. Edge of… | — |
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| Agoseris grandiflora (Nutt.) Greene var. grandiflora | M. F. Spencer 1346 | 28 Jun 1919 | United States of America | California | Edge of woods | — |
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| Agoseris heterophylla (Nutt.) Greene var. heterophylla | M. F. Spencer 1175 | 24 May 1919 | United States of America | California | San Diego Co. Mesa Grande | — |
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| Agoseris retrorsa (Benth.) Greene | M. F. Spencer 494 | 31 May 1917 | United States of America | California | San Diego Co. Pine Hills | — |
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| Allium haematochiton S.Watson | M. F. Spencer 535 | 10 Jun 1917 | United States of America | California | San Diego Co. In the… | — |
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| Allium praecox Brandegee | M. F. Spencer 3 | 22 Feb 1916 | United States of America | California | Vicinity of San Diego. | — |
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| Allium praecox Brandegee | M. F. Spencer 885 | 31 May 1918 | United States of America | California | San Diego Co. Vicinity of… | — |
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| Ambrosia ambrosioides (Cav.) Payne | M. F. Spencer 910 | Nov 1918 | United States of America | California | San Diego Co. near San… | — |
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| Arctostaphylos drupacea J.F.Macbr. | M. F. Spencer 506 | 29 May 1917 | United States of America | California | San Diego Co. Wayside near… | — |
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| Arctostaphylos tomentosa (Pursh) Lindl. | M. F. Spencer 9 | 04 Sep 1916 | United States of America | California | Vicinity of San Diego. In… | — |
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| Astragalus aridus A.Gray | M. F. Spencer 1483 | 14 Mar 1920 | United States of America | California | Mecca. Colorado Desert | — |
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| Astragalus coccineus (Parry) Brandegee | M. F. Spencer 235 | 18 Mar 1917 | United States of America | California | San Diego Co. Mountain Springs,… | — |
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| Astragalus coccineus (Parry) Brandegee | M. F. Spencer 235 | 16 May 1920 | United States of America | California | San Diego Co. Colorado Desert | — |
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| Astragalus douglasii var. parishii (A.Gray) M.E.Jones | M. F. Spencer 1190 | 18 Jun 1919 | United States of America | California | San Jacinto Mt. | — |
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| Astragalus douglasii var. parishii (A.Gray) M.E.Jones | M. F. Spencer 945 | 25 Jul 1918 | United States of America | California | San Diego Co. Wayside, Laguna… | — |
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| Astragalus layneae Greene | M. F. Spencer 1418 | 14 Apr 1920 | United States of America | California | Pr. Barstow, Mohave Desert | — |
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| Astragalus lentiginosus var. coachellae Barneby | M. F. Spencer 1501 | 11 Mar 1920 | United States of America | California | At White Water, Colorado Desert | — |
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| Astragalus lentiginosus var. coachellae Barneby | M. F. Spencer 743 | 04 Apr 1918 | United States of America | California | Riverside Co. Palm Springs | — |
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| Astragalus oocarpus A.Gray | M. F. Spencer 944 | 24 Jul 1918 | United States of America | California | San Diego Co. Descanso | — |
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| Astragalus oocarpus A.Gray | M. F. Spencer 1279 | 09 Jun 1919 | United States of America | California | San Diego Co. Mesa Grande | — |
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| Astragalus oocarpus A.Gray | M. F. Spencer 1279 | 09 Jun 1919 | United States of America | California | San Diego Co. Mesa Grande | — |
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| Astragalus palmeri A.Gray | M. F. Spencer 272 | 04 Mar 1917 | United States of America | California | San Diego Co. Colorado Desert | — |
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