Displaying 1 - 50 out of 413 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Acalypha alopecuroides Jacq. | E. Contreras 5613 | 17 Mar 1966 | Guatemala | Petén | In claer on Plaza Mayor… | — |
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| Acoelorrhaphe wrightii (Griseb. & H.Wendl.) H.Wendl. ex Becc. | E. Contreras 4012 | 06 Mar 1964 | Guatemala | Petén | Sayaxche, Rio Pucte camp, in… | — |
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| Acoelorrhaphe wrightii (Griseb. & H.Wendl.) H.Wendl. ex Becc. | E. Contreras 5362 | 20 Mar 1965 | Guatemala | Petén | El Ceibo, bordering Rio San… | — |
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| Acoelorrhaphe wrightii (Griseb. & H.Wendl.) H.Wendl. ex Becc. | E. Contreras 15 | 24 Jul 1959 | Guatemala | Petén | Tikal National Park, 46 km,… | — |
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| Adelia barbinervis Schltdl. & Cham. | E. Contreras 7390 | 31 Dec 1967 | Guatemala | Petén | Guayacan, in low forest, 1… | — |
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| Adelia barbinervis Schltdl. & Cham. | E. Contreras 11098 | 01 Mar 1972 | Guatemala | Baja Verapaz | Union Barrios, in high forest… | — |
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| Adiantum tricholepis Fée | E. Contreras 5501 | 07 Feb 1966 | Guatemala | Petén | In high forest on top… | — |
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| Adiantum villosum L. | E. Contreras 5593 | 14 Mar 1966 | Guatemala | Petén | In secondary growth bordering airfield.… | — |
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| Aechmea magdalenae (André) André ex Baker | E. Contreras 1416 | 16 Aug 1960 | Guatemala | Petén | Tikal National Park, Tikal, Aguada… | — |
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| Albizia adinocephala (Donn.Sm.) Britton & Rose | E. Contreras 8858 | 07 Aug 1969 | Guatemala | Petén | La Cumbre, bordering San Pedro… | — |
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| Albizia adinocephala (Donn.Sm.) Britton & Rose | E. Contreras 7006 | 12 Aug 1967 | Guatemala | Petén | San Pedro, on Cadenas Road,… | — |
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| Albizia tomentosa (Micheli) Standl. | E. Contreras 7515 | 02 Feb 1968 | Guatemala | Petén | San Miguel, bordering Lake Peten… | — |
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| Albizia tomentosa (Micheli) Standl. | E. Contreras 5415 | 28 Jan 1966 | Guatemala | Petén | Bordering the lake at Macanché. | — |
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| Allamanda cathartica L. | E. Contreras 8980 | 19 Aug 1969 | Guatemala | Izabal | Puerto Mendez (Cadenas), in high… | — |
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| Amyris guatemalensis Lundell | E. Contreras 8020 | 26 Oct 1968 | Guatemala | Alta Verapaz | Chahal, El Mago, in zapotal… | isotype |
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| Anemia adiantifolia (L.) Sw. | E. Contreras 5645 | 19 Mar 1966 | Guatemala | Petén | In ramonal, in secondary growth… | — |
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| Anemia speciosa C.Presl | E. Contreras 7049 | 04 Oct 1967 | Belize | Cayo | Benque Viejo, bordering Rio Mopan,… | — |
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| Aniba guatemalensis Lundell | E. Contreras 7941 | 15 Oct 1968 | Guatemala | Alta Verapaz | Chabal, 6.5 km., on El… | isotype | ||||
| Aniba parvissima Lundell | E. Contreras 6204 | 23 Sep 1966 | Guatemala | Petén | La Cumbre, west of Km.… | isotype | ||||
| Anthurium scandens (Aubl.) Engl. | E. Contreras 1128 | 21 Jun 1960 | Guatemala | Petén | Tikal, On top of Temple… | — |
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| Anthurium verapazense Engl. | E. Contreras 2094 | 15 Apr 1961 | Guatemala | Petén | Dolores, 1 km. west of… | — |
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| Arbutus xalapensis (Benth.) Kunth | E. Contreras 4884 | 05 Jun 1964 | Guatemala | — | El Quiche, Nebaj, on arroyo | — |
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| Asclepias curassavica L. | E. Contreras 11036 | 25 Feb 1972 | Guatemala | Baja Verapaz | Union Barrios, in high forest,… | — |
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| Asclepias curassavica L. | E. Contreras 3040 | 10 Oct 1961 | Guatemala | Petén | Dolores, on savanna, about 5… | — |
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| Aspidosperma desmanthum Benth. ex Müll.Arg. | E. Contreras 7680 | 11 Apr 1968 | Guatemala | Petén | Tiakl National Park, 3 km… | — |
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| Asplenium cristatum Lam. | E. Contreras 5460 | 18 Feb 1966 | Guatemala | Petén | In ramonal on Temple 5.… | — |
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| Astrocaryum mexicanum Liebm. ex Mart. | E. Contreras 2257 | 05 May 1961 | Guatemala | Petén | Dolores, on Santo Toribio Trail,… | — |
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| Astrocasia tremula (Griseb.) G.L.Webster | E. Contreras 5488 | 06 Feb 1966 | Guatemala | Petén | In ramonal in high forest.… | — |
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| Astrocasia tremula (Griseb.) G.L.Webster | E. Contreras 10380 | 24 Jan 1971 | Guatemala | Petén | bordering Lake Peten Itza between… | — |
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| Astrocasia tremula (Griseb.) G.L.Webster | E. Contreras 5883 | 12 Aug 1966 | Guatemala | Petén | Remate, bordering Laguna Peten, in… | — |
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| Astrocasia tremula (Griseb.) G.L.Webster | E. Contreras 8578 | 17 May 1969 | Guatemala | Petén | Dos Lagunas, Bajo Ixcanrio, in… | — |
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| Astrocasia tremula (Griseb.) G.L.Webster | E. Contreras 1209 | 02 Jul 1960 | Guatemala | Petén | Tikal National Park, about 6… | — |
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| Ateramnus lucidus (Sw.) Rothm. | E. Contreras 1311 | 16 Jul 1960 | Guatemala | Petén | on Pine Trail about 17… | — |
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| Ateramnus lucidus (Sw.) Rothm. | E. Contreras 8354 | 19 Apr 1969 | Guatemala | Petén | Dos Lagunas, bordering the first… | — |
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| Ateramnus lucidus (Sw.) Rothm. | E. Contreras 1038 | 07 Jun 1960 | Guatemala | Petén | Tikal National Park, Tikal, in… | — |
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| Ateramnus lucidus (Sw.) Rothm. | E. Contreras 984 | 23 May 1960 | Guatemala | Petén | Remate, bordering Itza Lake, in… | — |
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| Bactris mexicana var. trichophylla (Burret) A.J.Hend. | E. Contreras 66 | 01 Aug 1959 | Guatemala | Petén | Tikal, in forest covering the… | — |
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| Beloglottis | E. Contreras 8332 | 31 Jan 1969 | Guatemala | Petén | Tikal, Nat. Park. In Tintal,… | — |
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| Bertiera tenuis Lundell | E. Contreras 4318 | 15 Apr 1964 | Guatemala | Alta Verapaz | Sebol, W of the village. | isotype |
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| Bursera | E. Contreras 9715 | 13 Mar 1970 | Guatemala | Petén | Bordering Río Machaquila, north of… | — | ||||
| Bursera itzae Lundell | E. Contreras 6978 | 05 Aug 1967 | Guatemala | — | El Petén; Lake Peten Itza,… | isotype |
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| Bursera simaruba (L.) Sarg. | E. Contreras 9225 | 01 Oct 1969 | Guatemala | Petén | Cadenas-Puerto Mendez, km 170. | — |
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| Bursera simaruba (L.) Sarg. | E. Contreras 10203 | 12 Jul 1970 | Guatemala | Izabal | between Seja-Cienaga, 5 km from… | — |
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| Bursera simaruba (L.) Sarg. | E. Contreras 8479 | 05 May 1969 | Guatemala | Petén | Dos Lagunas, on Ixcanrio Road,… | — | ||||
| Bursera simaruba (L.) Sarg. | E. Contreras 5617 | 17 Mar 1966 | Guatemala | Petén | East of Temple 1 Tikal… | — |
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| Bursera simaruba var. yucatanensis Lundell | E. Contreras 3562 | 10 Apr 1962 | Guatemala | Petén | Lake Petén Itza, NW of… | — | ||||
| Calliandra belizensis (Britton & Rose ex Standl.) Standl. | E. Contreras 1614 | 10 Nov 1960 | Guatemala | Petén | Dos Lagunas, Bajo de Santa… | — |
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| Calyptranthes izabalana Lundell | E. Contreras 9090 | 07 Sep 1969 | Guatemala | Izabal | Cadenas (Pto. Mendez), on top… | isotype |
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| Calyptranthes petenensis Lundell | E. Contreras 6499 | 02 Nov 1966 | Guatemala | Petén | La Esperanza, km. 148 of… | isotype |
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| Calyptrocarya glomerulata (Brongn.) Urb. | E. Contreras 5331 | 21 Jul 1964 | Guatemala | Alta Verapaz | Sebol, El Caoba, in clearing. | — |
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