Displaying 1 - 50 out of 107 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Penstemon grinnellii Eastw. var. grinnellii | M. F. Spencer 1230 | 27 Jun 1919 | United States of America | California | Idyllwild, San Jacinto Mountain | — |
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| Chorizanthe parryi S.Watson var. parryi | M. F. Spencer 1103 | 09 May 1919 | United States of America | California | San Bernardino Co. Arrowhead Hot… | — |
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| Penstemon labrosus (A.Gray) Hook.f. | M. F. Spencer 961 | 25 Jul 1918 | United States of America | California | San Diego Co. Laguna Mountains | — |
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| Keckiella ternata (Torr. ex A.Gray) Straw subsp. ternata | M. F. Spencer 282 | 01 Aug 1925 | United States of America | California | Idyllwild, San Jacinto Mountains | — |
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| Tribulus terrestris L. | M. F. Spencer 1292 | 16 May 1919 | United States of America | California | San Bernardino Co. Near Colton… | — |
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| Solanum xanti var. spencerae J.F.Macbr. | M. F. Spencer 1069 | 28 Mar 1919 | United States of America | California | Torrey Pines near San Diego | type |
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| Krameria parvifolia var. imparata J.F.Macbr. | M. F. Spencer 763 | 04 May 1918 | United States of America | California | San Diego Co. Mountain Springs | isotype |
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| Ephedra aspera Engelm. ex S.Watson | M. F. Spencer 206 | 26 Mar 1917 | United States of America | California | San Diego Co. Mountain Springs | — |
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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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| Camissonia cheiranthifolia subsp. suffruticosa (S.Watson) P.H.Raven | M. F. Spencer 112 | 06 Feb 1916 - 10 Jun 1916 | United States of America | California | San Diego Co. Coronado. | — |
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| Solanum rostratum Dunal | M. F. Spencer 969 | 31 Jul 1918 | United States of America | California | San Diego Co. San Diego | — |
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| Solanum elaeagnifolium Cav. | M. F. Spencer 962 | 03 Aug 1918 | United States of America | California | San Diego. | — |
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| Calochortus | M. F. Spencer 18 | 21 Apr 1916 | United States of America | California | San Diego Co. Vicinity ofSan… | — |
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| Silene parishii var. viscida C.L.Hitchc. & Maguire | M. F. Spencer 2183 | 15 Aug 1923 | United States of America | California | Riverside Co. Tahquitz Ridge pr.… | isotype |
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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 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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| 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 trichopodus var. lonchus (M.E.Jones) Barneby | M. F. Spencer 1087 | 22 Apr 1919 | United States of America | California | Canyon near San Diego | — |
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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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| Panicum urvilleanum Kunth | M. F. Spencer 1311 | 17 Jun 1919 | United States of America | California | Riverside Co. San Jacinto | — |
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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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| 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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| Ambrosia ambrosioides (Cav.) Payne | M. F. Spencer 910 | Nov 1918 | United States of America | California | San Diego Co. near San… | — |
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| Cirsium californicum A.Gray | M. F. Spencer 20 | 4-11-1916 | United States of America | California | San Diego Co. | — |
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| Cirsium scariosum Nutt. | M. F. Spencer 474 | 04 Jun 1917 | United States of America | California | San Diego Co. Pine Hills. | — |
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| Erigeron foliosus var. covillei (Greene) Compton | M. F. Spencer 400 | 17 May 1917 | United States of America | California | San Bernardino Co. Mohave Desert;… | — |
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| Erigeron foliosus var. foliosus | M. F. Spencer 1269 | 25 Jun 1919 | United States of America | California | Riverside Co. San Jacinto Mountain;… | — |
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| Erigeron foliosus var. stenophyllus (Nutt.) A.Gray | M. F. Spencer 1201 | 19 Jun 1919 | United States of America | California | Riverside Co. San Jacinto Mts.;… | — |
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| Erigeron foliosus var. stenophyllus (Nutt.) A.Gray | M. F. Spencer 52 | 28 May 1916 | United States of America | California | San Diego Co. vicinity of… | — |
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| Erigeron foliosus var. stenophyllus (Nutt.) A.Gray | M. F. Spencer 932 | 25 Jul 1918 | United States of America | California | San Diego Co. Laguna Mt.;… | — |
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| Erigeron foliosus var. stenophyllus (Nutt.) A.Gray | M. F. Spencer 929 | 25 Jul 1918 | United States of America | California | San Diego Co. Laguna Mts.;… | — |
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| Erigeron spinosus Benth. | M. F. Spencer 963 | 28 Jul 1918 | United States of America | California | San Diego Co. near Mexican… | — |
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| Carex fracta Mack. | M. F. Spencer 1198 | 19 Jun 1919 | United States of America | California | Edge of woods, Idyllwild. San… | — |
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| Carex triquetra Boott | M. F. Spencer 1141 | 17 May 1919 | United States of America | California | Above Arrowhead Hot Spring near… | — |
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| Carex triquetra Boott | M. F. Spencer 1365 | 08 Apr 1919 | United States of America | California | San Diego Co. Golden Hill… | — |
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| Solidago californica Nutt. | M. F. Spencer 300 | 24 Aug 1916 | United States of America | California | San Diego Co. Pine Hills | — |
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| Solidago californica Nutt. | M. F. Spencer 1039 | 06 Oct 1918 | United States of America | California | San Diego Co. Alpine | — |
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| Solidago californica Nutt. | M. F. Spencer 955 | 17 Aug 1918 | United States of America | California | San Diego Co. Palomar Mt. | — |
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