Displaying 1 - 25 out of 54 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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| 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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| 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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| 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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| 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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