Displaying 1 - 50 out of 64 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Abarema jupunba var. trapezifolia (Vahl) Barneby & J.W.Grimes | M. Polak 287 | 24 Mar 1991 | Guyana | — | Ca.1km.E of camp site, Waraputa… | — |
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| Abarema jupunba var. trapezifolia (Vahl) Barneby & J.W.Grimes | M. Polak 185 | 30 Nov 1990 | Guyana | — | Near township of Mabaruma. | — |
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| Abarema jupunba var. trapezifolia (Vahl) Barneby & J.W.Grimes | M. Polak 158 | 05 Nov 1990 | Guyana | — | Mabaruma; along Mauru Cr., 2… | — |
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| Abarema jupunba var. trapezifolia (Vahl) Barneby & J.W.Grimes | M. Polak 158 | 05 Nov 1990 | Guyana | — | Mabaruma; along Mauru Cr., 2… | — | ||||
| Aspidosperma excelsum Benth. | M. Polak 187 | 12 Mar 1990 | Guyana | — | Along old logging road, 15… | — |
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| Aspidosperma excelsum Benth. | M. Polak 187 | 03 Dec 1990 | Guyana | — | Along old logging road, 15… | — |
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| Aspidosperma spruceanum Benth. ex Müll.Arg. | M. Polak 14 | 14 Aug 1990 | Guyana | — | Waraputa Compartment, ca. 25 km… | — |
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| Aspidosperma spruceanum Benth. ex Müll.Arg. | M. Polak 595 | 09 Dec 1991 | Guyana | — | Central Demerara Comp., ca. 45… | — |
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| Aspidosperma spruceanum Benth. ex Müll.Arg. | M. Polak 567 | "31-11-1991" | Guyana | — | Waraputa Compartment, ca. 25 km… | — |
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| Aspidosperma spruceanum Benth. ex Müll.Arg. | M. Polak 617 | 17 Dec 1991 | Guyana | — | Waraputa compt., plot 18.4, ca.… | — |
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| Aspidosperma ulei Markgr. | M. Polak 384 | 11 Feb 1991 | Guyana | — | Central Demerara compartment, ca. 45… | — |
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| Bactris oligoclada Burret | M. Polak nr4 | 09 Jul 1990 | Guyana | — | Along access road to Tropenbos… | — |
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| Bursera | M. Polak 343 | 01 Oct 1991 | Guyana | — | Near fieldstation of Tropenbos Ecological… | — |
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| Campylocentrum micranthum (Lindl.) Rolfe | M. Polak 178 | 11 Sep 1990 | Guyana | — | Mabaruma. Swamp; behind farm of… | — |
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| Cedrela odorata L. | M. Polak 546 | 18 Nov 1991 | Guyana | — | Takutu area, concession of Willems… | — | ||||
| Chaetocarpus schomburgkianus (Kuntze) Pax & K.Hoffm. | M. Polak 62 | 25 Oct 1990 | Guyana | — | Port Kaituma | — |
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| Chaetocarpus schomburgkianus (Kuntze) Pax & K.Hoffm. | M. Polak 195 | 10 Dec 1990 | Guyana | — | Along old logging roadm 15… | — |
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| Conchocarpus toxicarius (Spruce ex Engl.) Kallunki & Pirani | M. Polak 584 | 05 Dec 1991 | Guyana | — | Central Demerara Comp., ca. 45… | — | ||||
| Couratari gloriosa Sandwith | M. Polak 320 | 06 Mar 1991 | French Guiana | — | Near Tropenbos Ecological Reserve, ca.… | — | ||||
| Couratari gloriosa Sandwith | M. Polak 342 | 01 Oct 1991 | Guyana | — | Near fieldstation of Tropenbos Ecological… | — |
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| Couratari gloriosa Sandwith | M. Polak 320 | 03 Jun 1991 | Guyana | — | Near fieldstation of Tropenbos Ecological… | — |
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| Couratari guianensis Aubl. | M. Polak 594 | 09 Dec 1991 | Guyana | — | Central Demerara Comp. ca. 45… | — |
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| Couratari guianensis Aubl. | M. Polak 115 | 29 Oct 1990 | Guyana | — | Port Kaituma. | — |
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| Couratari guianensis Aubl. | M. Polak 115 | 29 Oct 1990 | Guyana | — | Port Kaituma. | — | ||||
| Couratari guianensis Aubl. | M. Polak 594 | 09 Dec 1991 | Guyana | — | Central Demerara Comp. ca. 45… | — | ||||
| Dichaea rendlei Gleason | M. Polak 110 | — | Guyana | — | Port Kaituma. Epiphyte on M.… | — |
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| Dioscorea trichanthera Gleason | M. Polak 404 | 04 Oct 1991 | Guyana | — | Along access road to Tropenbos… | — |
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| Drypetes | M. Polak 608 | 15 Dec 1991 | Guyana | — | Imbo Compartment, ca. 3 km… | — |
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| Encyclia | M. Polak 177 | 09 Nov 1990 | Guyana | — | Mabaruma | — |
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| Epidendrum rigidum Jacq. | M. Polak 124 | 30 Oct 1990 | Guyana | Barima-Waini | Port Kaituma | — |
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| Eschweilera alata A.C.Sm. | M. Polak 162 | 07 Nov 1990 | Guyana | — | Behind Kamwatta settlement at end… | — |
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| Eschweilera alata A.C.Sm. | M. Polak 501 | 05 Nov 1991 | Guyana | — | Waraputa Compartment, ca 25km S… | — |
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| Eschweilera decolorans Sandwith | M. Polak 104 | 28 Oct 1990 | Guyana | — | Port Kaituma. | — |
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| Eschweilera decolorans Sandwith | M. Polak 57 | 25-10-1990 | Guyana | — | Port Kaituma. | — |
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| Eschweilera Mart. ex DC. | M. Polak nr267 | 19 Mar 1991 | Guyana | — | Near inventory line 14, Waraputa… | — |
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| Eschweilera micrantha (O.Berg) Miers | M. Polak 105 | 29 Oct 1990 | Guyana | — | Port Kaituma. | — |
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| Eschweilera pedicellata (Rich.) S.A.Mori | M. Polak | 12 Aug 1991 | Guyana | — | Central Demerara Comp., ca. 45… | — |
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| Eschweilera sagotiana Miers | M. Polak 253 | 15 Mar 1991 | Guyana | — | Waraputa Compartment, ca 25km S… | — |
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| Eschweilera sagotiana Miers | M. Polak 253 | 15 Mar 1991 | Guyana | — | Waraputa Compartment, ca 25km S… | — | ||||
| Forsteronia guyanensis Müll.Arg. | M. Polak 68 | 26 Oct 1990 | Guyana | Barima-Waini | Matthews Ridge / Arakaka (Matakai)… | — |
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| Forsteronia guyanensis Müll.Arg. | M. Polak 562 | 21 Nov 1991 | Guyana | Pomeroon-Supenaam | Takutu area, concession of Willems… | — |
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| Geonoma poiteauana Kunth | M. Polak 136 | 31 Oct 1990 | Guyana | — | Port Kaituma | — |
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| Guianodendron praeclarum (Sandwith) Schütz & A.M.G.Azevedo | M. Polak 505 | 05 Nov 1991 | Guyana | — | Waraputa Compartment, ca. 25 km… | — | ||||
| Hyeronima alchorneoides Allemão | M. Polak 93 | 28 Oct 1990 | Guyana | — | Port Kaituma | — |
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| Hyeronima alchorneoides Allemão | M. Polak 579 | 05 Dec 1991 | Guyana | — | Central Demerara Compartment, ca. 50… | — |
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| Lecythis confertiflora (A.C.Sm.) S.A.Mori | M. Polak 279 | 20 Mar 1991 | Guyana | — | Near inventory line 14, Waraputa… | — |
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| Lecythis confertiflora (A.C.Sm.) S.A.Mori | M. Polak 12 | 31 Jul 1990 | Guyana | — | Along logging road in Waraputa… | — |
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| Lecythis confertiflora (A.C.Sm.) S.A.Mori | M. Polak 272 | 19 Mar 1991 | Guyana | — | Near inventory line 14, Waraputa… | — |
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| Lecythis confertiflora (A.C.Sm.) S.A.Mori | M. Polak 279 | 20 Mar 1991 | Guyana | — | Near inventory line 14, Waraputa… | — | ||||
| Lecythis confertiflora (A.C.Sm.) S.A.Mori | M. Polak 12 | 31 Jul 1990 | Guyana | — | Along logging road in Waraputa… | — |