Displaying 26 - 50 out of 64 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Encyclia | M. Polak 177 | 09 Nov 1990 | Guyana | — | Mabaruma | — | 04076668 |
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| Abarema jupunba var. trapezifolia (Vahl) Barneby & J.W.Grimes | M. Polak 185 | 30 Nov 1990 | Guyana | — | Near township of Mabaruma. | — | 01299745 |
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| Aspidosperma excelsum Benth. | M. Polak 187 | 03 Dec 1990 | Guyana | — | Along old logging road, 15… | — | 4191991 |
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| Chaetocarpus schomburgkianus (Kuntze) Pax & K.Hoffm. | M. Polak 195 | 10 Dec 1990 | Guyana | — | Along old logging roadm 15… | — | 3950388 |
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| Mabea speciosa subsp. guianensis Esser | M. Polak 227 | 11 Jan 1991 | Guyana | — | Near bathing place at Ya-ya… | — | 04072222 |
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| Maprounea guianensis Aubl. | M. Polak 239 | 13 Jan 1991 | Guyana | — | Seballi compt., ca. 3 km… | — | 4081919 |
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| Aspidosperma ulei Markgr. | M. Polak 384 | 11 Feb 1991 | Guyana | — | Central Demerara compartment, ca. 45… | — | 4177582 |
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| Couratari gloriosa Sandwith | M. Polak 320 | 06 Mar 1991 | French Guiana | — | Near Tropenbos Ecological Reserve, ca.… | — | 680930 | ||
| Schefflera decaphylla (Seem.) Harms | M. Polak 250 | 14 Mar 1991 | Guyana | — | Near township of Mabura. | — | 03227452 |
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| Eschweilera sagotiana Miers | M. Polak 253 | 15 Mar 1991 | Guyana | — | Waraputa Compartment, ca 25km S… | — | 02270031 |
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| Eschweilera sagotiana Miers | M. Polak 253 | 15 Mar 1991 | Guyana | — | Waraputa Compartment, ca 25km S… | — | 02312758 | ||
| Lecythis confertiflora (A.C.Sm.) S.A.Mori | M. Polak 272 | 19 Mar 1991 | Guyana | — | Near inventory line 14, Waraputa… | — | 00689892 |
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| Eschweilera Mart. ex DC. | M. Polak nr267 | 19 Mar 1991 | Guyana | — | Near inventory line 14, Waraputa… | — | 02152851 |
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| Lecythis confertiflora (A.C.Sm.) S.A.Mori | M. Polak 279 | 20 Mar 1991 | Guyana | — | Near inventory line 14, Waraputa… | — | 00689883 |
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| Lecythis confertiflora (A.C.Sm.) S.A.Mori | M. Polak 279 | 20 Mar 1991 | Guyana | — | Near inventory line 14, Waraputa… | — | 02311559 | ||
| Abarema jupunba var. trapezifolia (Vahl) Barneby & J.W.Grimes | M. Polak 287 | 24 Mar 1991 | Guyana | — | Ca.1km.E of camp site, Waraputa… | — | 01299744 |
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| Trattinnickia demerarae Sandwith | M. Polak 315 | 06 May 1991 | Guyana | — | Couratyne area, near branch of… | — | 901879 |
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| Couratari gloriosa Sandwith | M. Polak 320 | 03 Jun 1991 | Guyana | — | Near fieldstation of Tropenbos Ecological… | — | 00682163 |
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| Eschweilera pedicellata (Rich.) S.A.Mori | M. Polak | 12 Aug 1991 | Guyana | — | Central Demerara Comp., ca. 45… | — | 02281355 |
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| Couratari gloriosa Sandwith | M. Polak 342 | 01 Oct 1991 | Guyana | — | Near fieldstation of Tropenbos Ecological… | — | 00682162 |
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| Bursera | M. Polak 343 | 01 Oct 1991 | Guyana | — | Near fieldstation of Tropenbos Ecological… | — | 904790 |
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| Dioscorea trichanthera Gleason | M. Polak 404 | 04 Oct 1991 | Guyana | — | Along access road to Tropenbos… | — | 00617870 |
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| Eschweilera alata A.C.Sm. | M. Polak 501 | 05 Nov 1991 | Guyana | — | Waraputa Compartment, ca 25km S… | — | 00682425 |
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| Guianodendron praeclarum (Sandwith) Schütz & A.M.G.Azevedo | M. Polak 505 | 05 Nov 1991 | Guyana | — | Waraputa Compartment, ca. 25 km… | — | 1287810 | ||
| Sandwithia guyanensis Lanj. | M. Polak 455 | 08 Nov 1991 | Guyana | — | Near Tropenbos ecological reserve, 15… | — | 4091939 |
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