Displaying 1 - 75 out of 2137 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Chara vulgaris L. | R. T. Clausen | H. Trapido 3207 | 14 Sep 1937 | Canada | Quebec | Matapédia. Bonaventure County, at junction… | — |
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| Lathyrus maritimus Bigelow | R. T. Clausen 59-88 | 14 Aug 1959 | Canada | Quebec | island east of falls 6… | — |
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| Isoetes tuckermanii A.Braun | R. T. Clausen 2771 | 19 Aug 1937 | Canada | Quebec | Quebec, St. Lawrence Valley. Gravelly… | — |
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| Spinulum canadense (Nessel) A.Haines | R. T. Clausen 2865 | 26 Aug 1937 | Canada | Quebec | Gaspé. Gaspé Peninsula. In open… | — |
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| Polystichum acrostichoides (Michx.) Schott | R. T. Clausen 2867 | 26 Aug 1937 | Canada | Quebec | Gaspé. On steep wooded slope… | — |
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| Botrychium virginianum (L.) Sw. | R. T. Clausen 3131 | 26 Aug 1937 | Canada | Quebec | Gaspé. In rich woods below… | — |
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| Equisetum sylvaticum L. | R. T. Clausen 2873 | 27 Aug 1937 | Canada | Quebec | Gaspé. Gaspé Peninsula. In moist… | — |
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| Polystichum acrostichoides (Michx.) Schott | R. T. Clausen 2896 | 30 Aug 1937 | Canada | Quebec | Gaspé. In spruce woods along… | — |
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| Diphasiastrum complanatum (L.) Holub | R. T. Clausen 2902 | 30 Aug 1937 | Canada | Quebec | Gaspé. Gaspé Peninsula. In birch… | — |
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| Polystichum lonchitis (L.) Roth | R. T. Clausen 2946 | 04 Sep 1937 | Canada | Quebec | Gaspé. Cap des Rosiers | — |
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| Dryopteris filix-mas (L.) Schott | R. T. Clausen 2968 | 06 Sep 1937 | Canada | Quebec | Gaspé. In woods, north side… | — |
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| Botrychium lunaria (L.) Sw. | R. T. Clausen 2980 | 07 Sep 1937 | Canada | Quebec | Gaspé. Summit of Mt. Ste.Anne,… | — |
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| Cystopteris bulbifera (L.) Bernh. | R. T. Clausen 3070 | 17 Sep 1937 | Canada | Quebec | Lake St. John Co., Limestone… | — |
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| Equisetum hyemale var. affine (Engelm.) A.A.Eaton | R. T. Clausen 2926 | 01 Sep 1937 | Canada | Quebec | Gaspé Peninsula. Rivière Marsoui, Ste.… | — |
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| Cystopteris bulbifera (L.) Bernh. | R. T. Clausen 2901 | 30 Aug 1937 | Canada | Quebec | Gaspé. Along wagon road, 13… | — |
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| Polystichum lonchitis (L.) Roth | R. T. Clausen 2946 | 04 Sep 1937 | Canada | Quebec | Gaspé. Cap des Rosiers | — |
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| Asplenium viride Huds. | R. T. Clausen 2951 | 04 Sep 1937 | Canada | Quebec | Gaspé. Southwest of Cap des… | — |
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| Athyrium angustum (Willd.) C.Presl | R. T. Clausen 3064 | 06 Sep 1937 | Canada | Quebec | Gaspé. On northeast side of… | — |
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| Equisetum variegatum Schleich. ex F.Weber & D.Mohr var. variegatum | R. T. Clausen 2988 | 08 Sep 1937 | Canada | Quebec | Bonaventure Reg. Co. Mun. Gaspé… | — |
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| Equisetum hyemale var. affine (Engelm.) A.A.Eaton | R. T. Clausen 3010 | 10 Sep 1937 | Canada | Quebec | Bonaventure Reg. Co. Mun. Gaspé… | — |
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| Spinulum annotinum (L.) A.Haines | R. T. Clausen 3043 | 16 Sep 1937 | Canada | Quebec | Le Fjord-du-Saguenay Reg. Co. Mun.… | — |
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| Diphasiastrum digitatum (A.Braun) Holub | R. T. Clausen 3044 | 16 Sep 1937 | Canada | Quebec | Le Fjord-du-Saguenay Reg. Co. Mun.… | — |
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| Equisetum variegatum Schleich. ex F.Weber & D.Mohr var. variegatum | R. T. Clausen 2802 | 20 Aug 1937 | Canada | Quebec | Montmagny Reg. Co. Mun. St.… | — |
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| Botrychium lanceolatum (S.G.Gmel.) Ångstr. | R. T. Clausen 3052 | 22 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Dryopteris marginalis (L.) A.Gray | R. T. Clausen 2840 | 23 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Botrychium lanceolatum (S.G.Gmel.) Ångstr. | R. T. Clausen 3052 | 22 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Polypodium virginianum L. | R. T. Clausen 2838 | 23 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Cystopteris fragilis (L.) Bernh. | R. T. Clausen 2814 | 21 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Diphasiastrum complanatum (L.) Holub | R. T. Clausen 2839 | 23 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Dryopteris fragrans (L.) Schott | R. T. Clausen 2846 | 23 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Woodsia glabella R.Br. | R. T. Clausen 2835a | 23 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Cystopteris fragilis (L.) Bernh. | R. T. Clausen 2836 | 23 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Thelypteris palustris (A.Gray) Schott | R. T. Clausen 2740 | 17 Aug 1937 | Canada | Quebec | Sedgy meadow 3 miles northeast… | — |
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| Lycopodium clavatum L. | R. T. Clausen 2742 | 17 Aug 1937 | Canada | Quebec | New England Upland. Dry birch… | — |
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| Cystopteris fragilis (L.) Bernh. | R. T. Clausen 2831 | 22 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Asplenium viride Huds. | R. T. Clausen 2832 | 22 Aug 1937 | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski.… | — |
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| Isoetes tuckermanii A.Braun | R. T. Clausen 2778 | 19 Aug 1937 | Canada | Quebec | Communauté-Urbaine-de-Québec. St. Lawrence Valley. Tidal… | — |
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| Osmunda claytoniana L. | R. T. Clausen 3435 | 21 May 1938 | Canada | Ontario | about 1 mile west of… | — |
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| Marchantia paleacea Bertol. | R. T. Clausen 6210 | 07 Oct 1943 | El Salvador | Santa Ana | 16 km. south of Santa… | — |
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| Funaria calvescens Schwägr. | R. T. Clausen 6211 | 07 Oct 1943 | El Salvador | Santa Ana | Roadside bank 19 km. south… | — |
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| Rauvolfia tetraphylla L. | R. T. Clausen 6167 | 22 Sep 1943 | Guatemala | — | Roadside bank south of Concua | — |
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| Haplophyton cimicidum A.DC. | R. T. Clausen 6187 | 01 Oct 1943 | Guatemala | — | Rocky roadside and slope, Jampu | — |
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| Kalanchoe pinnata (Lam.) Pers. | R. T. Clausen 6154 | 20 Sep 1943 | Guatemala | Santa Rosa | beside trail 1 km northeast… | — |
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| Pteridium caudatum (L.) Maxon | R. T. Clausen 6178 | 27 Sep 1943 | Guatemala | Izabal | 2 km. west-northwest of Quiriguá | — |
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| Mimosa albida Humb. & Bonpl. ex Willd. | R. T. Clausen 6135 | 16 Sep 1943 | Guatemala | Guatemala | Roadside near Finca El Ingenio,… | — |
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| Senna pallida (Vahl) H.S.Irwin & Barneby var. pallida | R. T. Clausen 6188 | 01 Oct 1943 | Guatemala | Zacapa | Roadside near Jampu, east of… | — |
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| Senna pallida (Vahl) H.S.Irwin & Barneby var. pallida | R. T. Clausen 6189 | 01 Oct 1943 | Guatemala | Zacapa | Roadside between Santa Rosalia and… | — |
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| Dalea foliolosa (Aiton) Barneby var. foliolosa | R. T. Clausen 6191 | 01 Oct 1943 | Guatemala | Zacapa | Roadside just north of boundary… | — |
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| Sedum calcicola subsp. desertorum R.T.Clausen | R. T. Clausen 772031 | 25 Aug 1977 (wild date) & 15 Nov 1978 (flowers, Ithaca, NY) | Mexico | Nuevo León | Mexican Plateau. Gulf of Mexico… | isotype |
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| Sedum pulvinatum R.T.Clausen | R. T. Clausen C45-46 | 17 Aug 1946 | Mexico | Oaxaca | Cultivated in greenhouse. Source: Along… | isotype |
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| Graptopetalum fruticosum Moran | R. T. Clausen 616001 | 18 Apr 1964 | Mexico | Jalisco | Grown at Ithaca, New York.… | isotype |
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| Penstemon gentianoides (Kunth) Poir. | R. T. Clausen s.n. | 04 Sep 1955 | Mexico | — | Slope below Needle, western slope… | — |
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| Sedum latifilamentum R.T.Clausen | R. T. Clausen 78-15(1) | 08 Jun 1979 | Mexico | Hidalgo | Greenhouse Ithaca. Source: slope southwest… | holotype |
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| Sedum clavatum R.T.Clausen | R. T. Clausen 134? | 01 Jan 1956 | Mexico | — | Trans-Mexican volcanic belt. In gorge… | holotype fragment |
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| Schinus molle L. | R. T. Clausen 7448 | 14 Mar 1949 | Mexico | San Luis Potosí | Rocky slope west of San… | — | ||||
| Sedum reptans R.T.Clausen | R. T. Clausen 77-36(29-20) | 29 Apr 1979 | Mexico | San Luis Potosí | Greenhouse. Source: Mt. Agujón near… | isotype |
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| Sedum trichromum R.T.Clausen | R. T. Clausen 76-33(1) | 16 Nov 1979 | Mexico | Durango | Greenhouse. Source: about 3 km… | holotype |
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| Sedum parvum subsp. diminutum R.T.Clausen | R. T. Clausen 78-7 | 22 Jul 1978 | Mexico | Coahuila | Coahuila Platform and Jesus de… | isotype |
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| Sedum pulvinatum R.T.Clausen | R. T. Clausen C45-46 | Prepared 20 Apr 1959 | Mexico | Oaxaca | Originaliter ab montibus ad orientem… | isotype |
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| Sedum dendroideum subsp. parvifolium R.T.Clausen | R. T. Clausen 1 | 16 Oct 1955 | Mexico | — | Trans-Mexican Volcanic Belt. On breccia… | isotype |
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| Sedum guadalajaranum subsp. viridifolium R.T.Clausen | R. T. Clausen 772.025-3 | 10 Aug 1977 | Mexico | Zacatecas | Pacific Ocean drainage. Northernmost slope… | isotype |
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| Sedum globuliflorum R.T.Clausen | R. T. Clausen 78-13(r.l.) | 13 Sep 1978 | Mexico | Hidalgo | Greenhouse. Source: southwestern slope of… | isotype |
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| Alstroemeria pulchella L.f. | R. T. Clausen 6081 | 30 Aug 1943 | Mexico | Oaxaca | Side of Sierra de San… | — | ||||
| Braunia secunda (Hook.) Bruch & Schimp. | R. T. Clausen | 01 Sep 1955 | Mexico | Guerrero | Along trail running northeast from… | — | ||||
| Rhytidium rugosum (Ehrh. ex Hedw.) Kindb. | R. T. Clausen 7404 | 20 Feb 1949 | Mexico | Tamaulipas | Cerro Nacimiento 12 km. northwest… | — | ||||
| Dicranum scoparium Hedw. | R. T. Clausen 7405 | 20 Feb 1949 | Mexico | Tamaulipas | Cerro Nacimiento 12 km. northwest… | — |
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| Selaginella extensa Underw. | R. T. Clausen s.n. | 9 Nov 1955 | Mexico | Veracruz | Río Blanco, 5 km SW… | — |
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| Acacia berlandieri Benth. | R. T. Clausen 7581 | 18 Apr 1949 | Mexico | Coahuila | W side of Sierra de… | — | ||||
| Prosopis reptans var. cinerascens (A.Gray) Burkart | R. T. Clausen 7591 | 19 Apr 1949 | Mexico | Coahuila | Coahuila | — | ||||
| Stevia origanoides Kunth | R. T. Clausen s.n. | 18 Oct 1955 | Mexico | Tlaxcala | 1 km SW of San… | — | ||||
| Acacia pennatula (Schltdl. & Cham.) Benth. subsp. pennatula | R. T. Clausen 7425 | 2 Mar 1949 | Mexico | San Luis Potosí | 1 km E of El… | — | ||||
| Acacia coulteri Benth. ex A.Gray | R. T. Clausen 7366 | 13 Feb 1949 | Mexico | Tamaulipas | 7 km SW of Cd.… | — | ||||
| Prosopis tamaulipana Burkart | R. T. Clausen 7396 | 19 Feb 1949 | Mexico | Tamaulipas | About 6 km east of… | — | ||||
| Acacia coulteri Benth. ex A.Gray | R. T. Clausen 7367 | 13 Feb 1949 | Mexico | Tamaulipas | 7 km SW of Cd.… | — | ||||
| Abies religiosa subsp. colimensis (Rushforth & Narave) Silba | R. T. Clausen s.n. | 10 Dec 1955 | Mexico | — | 2 km. east-southeast of El… | — |