Displaying 1 - 75 out of 401 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Mertensia franciscana A.Heller | T. B. MacDougall 232 | 05 Jul 1898 | United States of America | Arizona | In the vicinity of Flagstaff | isotype | 452050 |
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| Lonchocarpus hondurensis Benth. | T. B. MacDougall s.n. | Feb 1936 | Mexico | Oaxaca | Santa Lucrecia, Oax. | — | 554091 |
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| Odontosoria schlechtendalii (C.Presl) C.Chr. | T. B. MacDougall s.n. | 12 Feb 1937 | Mexico | Oaxaca | Mts. near Yetla, ne of… | — | 4023765 |
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| Pernettya tomasii Camp | T. B. MacDougall s.n. | 05 Jan 1938 | Mexico | Chiapas | Volcán Tacaná. | holotype | 10279 |
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| Pernettya tomasii Camp | T. B. MacDougall s.n. | 15 Jan 1938 | Mexico | Chiapas | Volcán Tacaná. | — | 10280 |
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| Penstemon gentianoides (Kunth) Poir. | T. B. MacDougall s.n. | 16 Jan 1938 | Mexico | — | Volcan Tacana. Chiapas | — | 773023 |
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| Vaccinium confertum | T. B. MacDougall s.n. | 16 Jan 1938 | Mexico | Chiapas | Volcan Tacana. | — | 2646841 |
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| Vaccinium confertum | T. B. MacDougall s.n. | 16 Jan 1938 | Mexico | Chiapas | Volcan Tacana. | — | 2646842 |
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| Vaccinium confertum | T. B. MacDougall s.n. | 16 Jan 1938 | Mexico | Chiapas | Volcan Tacana. | — | 2646843 |
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| Gaultheria tacanensis Camp | T. B. MacDougall s.n. | 16 Jan 1938 | Mexico | Chiapas | Volcán Tacaná. | holotype | 10824 |
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| Gaultheria erecta Vent. | T. B. MacDougall s.n. | 18 Jan 1940 | Mexico | Oaxaca | [Illegible]. Cerro just N of… | — | 2525522 |
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| Vaccinium cordifolium (M.Martens & Galeotti) Hemsl. | T. B. MacDougall s.n. | 18 Jan 1940 | Mexico | Oaxaca | Santo Domingo Tehuantepec Mun. [Illegible]… | — | 2634467 |
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| Lantana hirta Graham | T. B. MacDougall 11932 | 10 Nov 1941 | United States of America | New York | Bronx Co. | — | 03521620 |
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| Lantana hirta Graham | T. B. MacDougall 11932 | 10 Nov 1941 | United States of America | New York | Bronx Co. | — | 3521621 |
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| Vaccinium confertum | T. B. MacDougall B | 10 Jan 1942 | Mexico | Oaxaca | Santo Tomás Teipa. (ca 1/2… | — | 2646896 |
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| Arctostaphylos pungens Kunth | T. B. MacDougall s.n. | 16 Feb 1942 | Mexico | Oaxaca | Cerro Nueve Flan. ca 1/2… | — | 1875264 |
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| Arctostaphylos pungens Kunth | T. B. MacDougall s.n. | 16 Feb 1942 | Mexico | Oaxaca | Cerro Nueve Flan. ca 1/2… | — | 1875265 |
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| Gaultheria erecta Vent. | T. B. MacDougall H | 16 Feb 1942 | Mexico | Oaxaca | Cerro Nu[eve] Flan. (ca 1/2… | — | 2525626 |
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| Arbutus occidentalis McVaugh & Rosatti | T. B. MacDougall A | 16 Feb 1942 | Mexico | Oaxaca | Cerro Nueve Flan. ca 1/2… | — | 01874881 |
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| Vaccinium confertum | T. B. MacDougall D | 16 Feb 1942 | Mexico | Oaxaca | Cerro Nueve Flan. (ca 1/2… | — | 2646895 |
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| Vaccinium geminiflorum Kunth | T. B. MacDougall C | 17 Feb 1942 | Mexico | Oaxaca | Cerro Nueve Flan. (ca 1/2… | — | 2634531 |
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| Vaccinium confertum | T. B. MacDougall T | 18 Feb 1942 | Mexico | Oaxaca | Santo Tomás Teipa. (ca 1/2… | — | 2646894 |
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| Penstemon gentianoides (Kunth) Poir. | T. B. MacDougall 750 | 21 Feb 1945 | Mexico | Oaxaca | — | 773024 |
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| Disocactus macranthus (Alexander) Kimnach & Hutchison | T. B. MacDougall A185 | 11 Feb 1950 | Mexico | Chiapas | La Selva Negra, S. Bartolo… | — | 03169908 |
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| Lantana hirta Graham | T. B. MacDougall s.n. | 01 Nov 1950 | United States of America | New York | Bronx Co. | — | 3521622 |
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| Disocactus macranthus (Alexander) Kimnach & Hutchison | T. B. MacDougall A196 | 9 Feb 1951 | United States of America | California | Alameda Co. The University of… | — | 03169911 |
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| Tibouchina chiapensis Wurdack | T. B. MacDougall [Collection No. series of E. Matuda] 26064 | 09 Mar 1952 | Mexico | Chiapas | Near Monserrata | isotype | 581296 |
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| Sedum tortuosum Hemsl. | T. B. MacDougall B163 | 08 Jan 1954 | Mexico | Oaxaca | Cerro Maderña, between Quiechapa and… | — | 4108016 |
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| Weberocereus glaber (Eichlam) G.D.Rowley | T. B. MacDougall A222 | 27 Jan 1954 | Mexico | Chiapas | Tuxtla Gutiérrez Mun. El Sumidero | — | 03904766 |
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| Epiphyllum crenatum (Lindl.) G.Don | T. B. MacDougall A225 | 21 Feb 1954 | Mexico | Chiapas | Tapachula Mun. El Triunfo above… | — | 3859231 |
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| Epiphyllum caudatum Britton & Rose | T. B. MacDougall A229 | 9 Nov 1954 | Mexico | Chiapas | Llano de San Juan. Ocozocoautla | — | 3859220 |
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| Epiphyllum caudatum Britton & Rose | T. B. MacDougall A250 | Nov 1957 | Mexico | Oaxaca | Guevea de Humboldt Mun. Santiago… | — | 3859221 |
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| Epiphyllum crenatum (Lindl.) G.Don | T. B. MacDougall A248 | 9 Nov 1957 | Mexico | Oaxaca | San Andrés Lovene | — | 03859121 |
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| Disocactus nelsonii (Britton & Rose) Lindinger | T. B. MacDougall | Jan 1958 | United States of America | California | Alameda Co. University of California… | — | 03169915 |
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| Epiphyllum crenatum (Lindl.) G.Don | T. B. MacDougall A7 | 22 Mar 1958 | Mexico | Chiapas | Cerro de San Cristobal, San… | — | 03859120 |
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| Epiphyllum crenatum (Lindl.) G.Don | T. B. MacDougall A7 | 22 Mar 1958 | Mexico | Chiapas | San Cristobal Las Casas, Cerro… | — | 03859126 |
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| Epiphyllum crenatum (Lindl.) G.Don | T. B. MacDougall | 12 May 1960 | United States of America | California | Alameda Co. The University of… | — | 3859233 |
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| Tagetes lucida Cav. | T. B. MacDougall 30 | 9 Dec 1961 | Mexico | Oaxaca | Santo Domingo Chontecomatlan | — | 432732 | ||
| Adiantum concinnum Humb. & Bonpl. ex Willd. | T. B. MacDougall s.n. | 1961 | Mexico | Oaxaca | — | 3915234 |
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| Tillandsia leucolepis L.B.Sm. | T. B. MacDougall 280 | 15 Mar 1962 | Mexico | Oaxaca | Cultivated, probably of local origin. | isotype | 247296 |
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| Anaphalis aecidiocephala Grierson | T. B. MacDougall s.n. | Dec 1963 | Mexico | Oaxaca | Cerro de Humo Chico, Comaltepec,… | — | 359950 |
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| Solanum dulcamaroides Poir. | T. B. MacDougall 449S | 16 Nov 1964 | Mexico | Chiapas | North of Ocozocoautla. | — | 00751072 |
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| Cnidoscolus herbaceus (L.) I.M.Johnst. | T. B. MacDougall s.n. | 12 Apr 1965 | Mexico | Oaxaca | Tehuantepec Mun. S. Mateo del… | — | 3962616 |
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| Erycina pusilla (L.) N.H.Williams & M.W.Chase | T. B. MacDougall s.n. | 21 Apr 1965 - 28 Apr 1965 | Mexico | — | Sta. Maria Chimalapa | — | 4088380 |
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| Chamaedorea geonomiformis H.Wendl. | T. B. MacDougall | May 1965 | Mexico | Oaxaca | Rio del Pajaro. | — | 02321583 |
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| Mimosa goldmanii B.L.Rob. | T. B. MacDougall s.n. | 8 Jun 1965 | Mexico | Oaxaca | Santo Domingo Tehuantepec Mun. Guiengola,… | — | 550934 |
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| Calliandra hirsuta (G.Don) Benth. | T. B. MacDougall s.n. | 22 Oct 1965 | Mexico | Oaxaca | Nejapa de Madero Mun. Portillo… | — | 00548528 |
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| Senna holwayana (Rose) H.S.Irwin & Barneby var. holwayana | T. B. MacDougall 46 | 31 Oct 1965 | Mexico | Oaxaca | Santo Domingo Tehuantepec Mun. Río… | — | 1583579 |
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| Senna skinneri (Benth.) H.S.Irwin & Barneby | T. B. MacDougall s.n. | 31 Oct 1965 | Mexico | Oaxaca | Río Ocotito, km 770, Tehuantepec | — | 1585594 |
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| Senna wislizeni var. pringlei (Rose) H.S.Irwin & Barneby | T. B. MacDougall s.n. | 05 Nov 1965 | Mexico | Oaxaca | Río Horido, km 513, Yantepec | — | 1586152 |
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| Senna villosa (Mill.) H.S.Irwin & Barneby | T. B. MacDougall s.n. | 05 Nov 1965 | Mexico | Oaxaca | Río Hondo, km 813, Yautepec | — | 1586038 |
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| Lonchocarpus emarginatus Pittier | T. B. MacDougall s.n. | 6 Nov 1965 | Mexico | Oaxaca | Santa María Jalapa del Marqués… | — | 553621 |
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| Senna skinneri (Benth.) H.S.Irwin & Barneby | T. B. MacDougall s.n. | 12 Nov 1965 | Mexico | Oaxaca | Santo Domingo Tehuantepec Mun. San… | — | 1585600 |
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| Senna pallida var. isthmica H.S.Irwin & Barneby | T. B. MacDougall s.n. | 12 Nov 1965 | Mexico | Oaxaca | San Antonio, Tehuantepec | — | 1584490 |
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| Anaphalis aecidiocephala Grierson | T. B. MacDougall s.n. | 8 Feb 1966 | Mexico | Oaxaca | Cerro de Humo Chico, Comaltepec,… | — | 359949 |
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| Oxylobus oaxacanus S.F.Blake | T. B. MacDougall s.n. | 8 Feb 1966 | Mexico | Oaxaca | Santiago Comaltepec Mun. Cerro de… | — | 425613 |
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| Senna holwayana (Rose) H.S.Irwin & Barneby var. holwayana | T. B. MacDougall s.n. | 11 Feb 1966 | Mexico | Chiapas | Río de Oro, Cintalapa | — | 1583576 |
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| Acacia carbonaria Schltdl. | T. B. MacDougall s.n. | 2 Mar 1966 | Mexico | Oaxaca | Asuncion Ixtaltepec Mun. Nizanda -… | — | 552483 | ||
| Senna atomaria (L.) H.S.Irwin & Barneby | T. B. MacDougall s.n. | 2 Mar 1966 | Mexico | Oaxaca | Asuncion Ixtaltepec Mun. Nizanda, Juchitán,… | — | 554758 |
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| Dahlia australis (P.D.Sørensen) Sherff var. australis | T. B. MacDougall s.n. | 12 Mar 1966 | Mexico | Oaxaca | Pluma Hidalgo Mun. | — | 01405194 |
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| Chloroleucon mangense var. leucospermum (Brandegee) Barneby & J.W.Grimes | T. B. MacDougall s.n. | 11 Apr 1966 | Mexico | Chiapas | Yerba Santa, Santo Antonio, Chiapas | — | 00548927 |
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| Mimosa tricephala var. xanti (A.Gray) Chehaibar & R.Grether | T. B. MacDougall s.n. | 10 Jun 1966 | Mexico | Oaxaca | km 645-635, Oaxaca | — | 551509 |
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| Euphorbia guiengola W.R.Buck & Huft | T. B. MacDougall 58.856-1 | 1 Oct 1966 | Mexico | Oaxaca | Santo Domingo Tehuantepec Mun. Tehuantepec,… | — | 4021162 |
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| Senna nicaraguensis (Benth.) H.S.Irwin & Barneby | T. B. MacDougall s.n. | 24 Dec 1966 | Mexico | Oaxaca | Cerro Tres Cruces- La Concepción,… | — | 1584027 |
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| Senna holwayana (Rose) H.S.Irwin & Barneby var. holwayana | T. B. MacDougall s.n. | 24 Dec 1966 | Mexico | Oaxaca | Santo Domingo Tehuantepec Mun. Cerro… | — | 1583586 |
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| Zapoteca tetragona (Willd.) H.M.Hern. | T. B. MacDougall s.n. | 21 Jan 1967 | Mexico | Chiapas | Ixhuatán Mun. Ixhuatán, Chis | — | 552315 | ||
| Solanum wendlandii Hook.f. | T. B. MacDougall 512 | 21 Apr 1967 | Mexico | Oaxaca | Juquila. Km 183, Lachao | — | 01840037 |
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| Euphorbia guiengola W.R.Buck & Huft | T. B. MacDougall s.n. | Oct 1967 | Mexico | Oaxaca | Tehuantepec Mun. Cerro Guiengola | — | 4021161 |
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| Penstemon kunthii G.Don | T. B. MacDougall s.n. | 29 Oct 1967 | Mexico | Oaxaca | Nochistlan | — | 773201 |
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| Euphorbia fulgens Karw. ex Klotzsch | T. B. MacDougall s.n. | 19 Jan 1968 | Mexico | Oaxaca | Juquila. Rio Sal, Lachao | — | 4020953 |
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| Tillandsia fournieri E.Morren ex Baker | T. B. MacDougall | 8 Feb 1968 | Mexico | Oaxaca | Distrito Ixtlán.. Vista Hermosa, Comaltepec | — | 03875652 |
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| Gnaphalium aecidiocephalum (Grierson) L.O.Williams | T. B. MacDougall 4129 | 2 Mar 1968 | Mexico | Oaxaca | Cerro de Humo Chico, Comaltepec,… | — | 418003 |
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| Macleania insignis M.Martens & Galeotti | T. B. MacDougall s.n. | 30 Apr 1968 | Mexico | Oaxaca | Ixtlán de Juárez Mun. Vista… | — | 2603102 |
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| Pernettya prostrata (Cav.) DC. | T. B. MacDougall s.n. | 29 May 1968 | Mexico | Oaxaca | Ixtlán de Juárez Mun. Cerro… | — | 2604548 |
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| Arbutus occidentalis McVaugh & Rosatti | T. B. MacDougall | 29 May 1968 | Mexico | Oaxaca | Ixtlán de Juárez Mun. Cerro… | — | 1874882 |
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