Displaying 1 - 75 out of 689 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Calochaetis | J. R. Johnston s.n. | 31 Aug 1913 | Puerto Rico | Trujillo Alto | — |
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| Puccinia emiliae Henn. | J. R. Johnston 202 | 13 Jan 1912 | Puerto Rico | Ponce | Mercedito | — |
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| Puccinia melampodii Dietel & Holw. | J. R. Johnston 1041 | 31 Aug 1913 | Puerto Rico | Trujillo Alto | Kilo 15 | — |
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| Puccinia lateritia Berk. & M.A.Curtis | J. R. Johnston 1364 | 14 Feb 1914 | Puerto Rico | Cataño | — |
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| Ravenelia indigoferae Tranzschel | J. R. Johnston 1368 | 01 Feb 1914 | Puerto Rico | Cataño | — |
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| Ravenelia caulicola Arthur | J. R. Johnston 1370 | 01 Feb 1914 | Puerto Rico | Cataño | — |
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| Melanconium sacchari Massee | J. R. Johnston 4171 | 11 Jan 1912 | Puerto Rico | Ponce | — |
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| Annulohypoxylon stygium (Lév.) Y.M.Ju, J.D.Rogers & H.M.Hsieh | J. R. Johnston 969 | 22 Jun 1913 | Puerto Rico | San Juan | Río Piedras. Martín Peña | — |
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| Rhytidhysteron rufulum (Spreng.:Fr.) Speg. | J. R. Johnston s.n. | 22 Jun 1913 | Puerto Rico | San Juan | Río Piedras. Martín Peña | — |
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| Malmidea rhodopsis (Tuck.) Kalb, Rivas Plata & Lumbsch | J. R. Johnston 274 | 03 Mar 1912 | Puerto Rico | San Juan | P.R., Rio Piedras | — |
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| Malmidea piperis (Spreng.) Kalb, Rivas Plata & Lumbsch | J. R. Johnston 274 | 03 Mar 1912 | Puerto Rico | San Juan | Porto Rico, Río Piedras | — |
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| Lentinus crinitus (L.:Fr.) Fr. | J. R. Johnston s.n. | 28 Jun 1914 | — | — | — |
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| Tinctoporia albocincta (Cooke & Massee) Murrill | J. R. Johnston 1502 | 07 Mar 1914 | — | — | — |
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| Tinctoporia albocincta (Cooke & Massee) Murrill | J. R. Johnston s.n. | s.d. | — | — | — |
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| Macromitrium trinitense R.S.Williams | J. R. Johnston 163 | 06 Jul 1903 | Trinidad and Tobago | — | Trinidad. El Valle to San… | holotype |
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| Spiranthes torta (Thunb.) Garay & H.R.Sweet | J. R. Johnston 184 | 28 Mar 1912 | Puerto Rico | — | Río Piedras | — |
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| Calliandra panlosia J.R.Johnst. | J. R. Johnston 27 | 02 Jul 1903 | Venezuela | — | Juan Griego trail, island of… | isosyntype |
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| Peperomia victoriana var. margaritana C.DC. | J. R. Johnston 18 | 04 Jul 1903 | Venezuela | — | Island of Margarita | isotype |
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| Sacoila lanceolata (Aubl.) Garay | J. R. Johnston 229 | 16 Apr 1912 | Puerto Rico | — | Rio Piedras. | — |
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| Blakea monticola J.R.Johnst. | J. R. Johnston 51 | 06 Jul 1903 | Venezuela | — | Island of Margarita | isotype |
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| Phymatodes prominula Maxon | J. R. Johnston 155 | 06 Jul 1903 | Venezuela | — | Island of Margarita: San Juan… | isotype |
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| Microchilus plantagineus (L.) D.Dietr. | J. R. Johnston 746 | 04 Dec 1912 | Puerto Rico | — | El Yunque | — |
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| Habenaria monorrhiza (Sw.) Rchb.f. | J. R. Johnston 760 | 04 Dec 1912 | Puerto Rico | — | El Yunque | — |
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| Ditassa subulata J.R.Johnst. | J. R. Johnston 262 | 06 Jul 1903 | Venezuela | — | Island of Margarita: San Juan… | isotype |
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| Oxalis frutescens var. margaritensis R.Knuth | J. R. Johnston 128 | 06 Jul 1903 | Venezuela | — | Island of Margarita | isotype |
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| Croton milleri J.R.Johnst. | J. R. Johnston 48 | 10 Aug 1903 | Venezuela | — | Margarita: El Valle | syntype |
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| Jacquinia petiolata J.R.Johnst. | J. R. Johnston 273 | 10 Aug 1903 | Venezuela | — | Island of Margarita: Pt. Mosquito | isotype |
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| Inga macrantha J.R.Johnst. | J. R. Johnston 25 | 11 Jul 1903 | Venezuela | — | Juan Griego trail, Margarita Island.… | type |
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| Argythamnia erubescens J.R.Johnst. | J. R. Johnston 58 | 27 Jul, 21 Aug 1903 | Venezuela | — | Island of Margarita | syntype |
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| Chiococca micrantha J.R.Johnst. | J. R. Johnston 115 | 27 Jul 1903 | Venezuela | — | Island of Margarita: San Juan… | isotype |
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| Piper margaritanum C.DC. | J. R. Johnston 20 | 11 Jul 1903 | Venezuela | Nueva Esparta | Isla Margarita. San Juan Mt. | isotype |
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| Capparis collina J.R.Johnst. | J. R. Johnston 10 | 15 Jul 1903 | Venezuela | Nueva Esparta | Isla Margarita. El Valle. | isotype |
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| Capparis stenosepala Urb. | J. R. Johnston 8 | 27 Jul 1903 | Venezuela | Nueva Esparta | Isla Margarita. El Valle. | type |
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| Morisonia johnstonii Urb. | J. R. Johnston 7 | 18 Jul 1903 | Venezuela | Nueva Esparta | Isla Margarita. El Valle. | isotype |
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| Gliricidia lutea J.R.Johnst. | J. R. Johnston 34 | 15 Aug 1905 | Venezuela | — | Island of Margarita; El Valle. | syntype |
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| Clerodendrum margaritense Moldenke | J. R. Johnston 82 | Aug 1903 | Venezuela | — | Island of Margarita; En route… | isotype |
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| Diplazium radicans (Sw.) Desv. | J. R. Johnston 153 | 29 Jul 1903 | Venezuela | — | Island of Margarita. Juan Griego… | — |
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| Solanum margaritense J.R.Johnst. | J. R. Johnston 315 | 12 Aug 1903-14 Aug 1903 | Venezuela | Nueva Esparta | Isla Margarita. Juan Griego trail | isotype |
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| Solanum umbratile I.M.Johnst. | J. R. Johnston 321 | 22 Jul 1903 | Venezuela | Nueva Esparta | Isla Margarita. Juan Griego Trail | type |
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| Piper johnstoni C.DC. | J. R. Johnston 19 | 22 Jul 1903 | Venezuela | Nueva Esparta | Isla Margarita. Juan Griego trail | isotype |
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| Solanum arboreum Dunal | J. R. Johnston 70 | 22 Jul 1903 | Venezuela | Nueva Esparta | Isla Margarita. Juan Griego trail. | — |
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| Solanum arboreum Dunal | J. R. Johnston 40 | 11 Jun 1903 | Trinidad and Tobago | — | Trinidad. T. Maracas Falls. | — |
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| Dioscorea polygonoides Humb. & Bonpl. ex Willd. | J. R. Johnston 851 | 16 Mar 1913 | Puerto Rico | — | Río Piedras. | — |
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| Dioscorea polygonoides Humb. & Bonpl. ex Willd. | J. R. Johnston 299 | 02 Jun 1912 | Puerto Rico | — | Río Piedras. | — |
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| Solanum bahamense L. | J. R. Johnston 734 | 05 Dec 1912 | Puerto Rico | — | Mameyes | — |
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| Solanum bahamense L. | J. R. Johnston 788 | 04 Jul 1913 | Puerto Rico | Fajardo | Icacos Is. | — |
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| Solanum jamaicense Mill. | J. R. Johnston 1378 | 18 Feb 1914 | Puerto Rico | Carolina | Buena Vista. | — |
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| Solanum mammosum L. | J. R. Johnston 316 | 19 May 1912 | Puerto Rico | — | Río Piedras. | — |
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| Hyperbaena laurifolia (Poir.) Urb. | J. R. Johnston 1243 | Jan 1914 | Puerto Rico | — | Martin Peña. | — |
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| Jacquemontia verticillata (L.) Urb. | J. R. Johnston 906 | 03 Aug 1913 | Puerto Rico | Bayamón | — |
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| Andira inermis (W.Wright) Kunth ex DC. subsp. inermis | J. R. Johnston 296 | 29 May 1912 | Puerto Rico | — | Río Piedras. | — |
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| Thespesia grandiflora DC. | J. R. Johnston 1955 | 11 Jun 1914 | Puerto Rico | — | Manati, Río Piedras. | — |
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| Justicia mirabiloides Lam. | J. R. Johnston 1242 | 25 Jan 1914 | Puerto Rico | — | Manatí Peña. | — |
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| Justicia periplocifolia Jacq. | J. R. Johnston 925 | 10 Aug 1913 | Puerto Rico | Comerío | Km 24 | — |
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| Salvia occidentalis Sw. | J. R. Johnston 313 | 02 Jun 1912 | Puerto Rico | — | Canóvanas. | — |
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| Allotoonia agglutinata (Jacq.) J.F.Morales & J.K.Williams | J. R. Johnston 2054 | 29 Jun 1914 | Puerto Rico | Moca | Río Piedras | — |
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| Pentalinon luteum (L.) B.F.Hansen & Wunderlin | J. R. Johnston 827 | 04 Jul 1913 | Puerto Rico | Fajardo | Icacos Island. | — |
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| Allamanda cathartica L. | J. R. Johnston 445 | Jun 1912 | Puerto Rico | — | Near Carolina. | — |
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| Azolla caroliniana Willd. | J. R. Johnston 475 | 6 July 1912 | Puerto Rico | Toa Baja | — |
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| Clusia minor L. | J. R. Johnston 962 | 10 August 1913 | Puerto Rico | Ciales | — |
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| Polygala longicaulis Kunth | J. R. Johnston 865 | 26 July 1913 | Puerto Rico | Dorado | — |
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| Hippocratea volubilis L. | J. R. Johnston 880 | 26 July 1913 | Puerto Rico | Dorado | — |
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| Mimosa ceratonia var. ceratonia | J. R. Johnston 33 | 19 Nov 1911 | Puerto Rico | — | Río Piedras. | — |
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| Mimosa ceratonia var. ceratonia | J. R. Johnston 65 | 26 Jan 1912 | Puerto Rico | — | Río Piedras. | — |
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| Ageratum conyzoides L. subsp. conyzoides | J. R. Johnston 132 | 18 Feb 1912 | Puerto Rico | — | Río Piedras. | — |
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| Bidens pilosa L. | J. R. Johnston ac.20 | 29 Jan 1912 | Puerto Rico | — | Río Piedras. | — |
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| Chromolaena odorata (L.) R.M.King & H.Rob. | J. R. Johnston ae.23 | 26 Jan 1912 | Puerto Rico | — | Río Piedras. | — |
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| Chromolaena odorata (L.) R.M.King & H.Rob. | J. R. Johnston ae.144A | 04 Mar 1912 | Puerto Rico | — | Río Piedras. | — |
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| Cyanthillium cinereum (L.) H.Rob. | J. R. Johnston 878 | 26 Jul 1913 | Puerto Rico | Dorado | — |
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| Cyanthillium cinereum (L.) H.Rob. | J. R. Johnston 775 | 21 Jan 1913 | Puerto Rico | — | Río Piedras. Ex. Sta. | — |
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| Cyanthillium cinereum (L.) H.Rob. | J. R. Johnston 1123 | 28 Dec 1913 | Puerto Rico | — | Río Piedras. | — |
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| Emilia sonchifolia (L.) DC. | J. R. Johnston acc.131 | 18 Feb 1912 | Puerto Rico | — | Río Piedras. | — |
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| Pluchea odorata (L.) Cass. | J. R. Johnston 580 | 12 Aug 1912 | Puerto Rico | — | Río Piedras. | — |
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| Wedelia reticulata DC. | J. R. Johnston 467 | 06 Jul 1912 | Puerto Rico | Vega Alta | — |
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| Wedelia reticulata DC. | J. R. Johnston 2047 | 29 Jun 1914 | Puerto Rico | Moca | — |
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