Displaying 1 - 75 out of 2137 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Juniperus virginiana L. var. virginiana | R. T. Clausen 4528 | 15 Oct 1939 | United States of America | New York | Ontario Co. Deep Run, Gorham… | — |
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| Chamaecyparis thyoides (L.) Britton, Sterns & Poggenb. | R. T. Clausen J. L. Edwards6451 | 21 Sep 1944 | United States of America | New Jersey | Ocean Co. Swamp along Tom's… | — |
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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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| Cleome serrulata Pursh | R. T. Clausen 70 107 | 31 Jul 1970 | United States of America | Nevada | Bank of road through pinyon-juniper… | — |
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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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| Juniperus chinensis L. | R. T. Clausen 8050 | 25 Feb 1951 | United States of America | New York | Tompkins Co. South side of… | — |
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| Dicranella heteromalla (Hedw.) Schimp. | R. T. Clausen 4537 | 31 Mar 1940 | United States of America | New Jersey | Passaic Co. Near west bank… | — | ||||
| Picea rubens Sarg. | R. T. Clausen 8128 | 13 Oct 1951 | United States of America | Vermont | Franklin Co. North Hill, Montgomery… | — |
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| Alyssum alyssoides (L.) L. | R. T. Clausen 7045 | 01 Jun 1947 | United States of America | New York | Ontario Co. 1 km. northwest… | — |
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| Rumex fueginus Phil. | R. T. Clausen 5058 | 11 Aug 1940 | United States of America | Wyoming | Teton Co. Exposed muddy shore… | — |
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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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| Lythrum salicaria L. | R. T. Clausen 5869 | 19 Jul 1942 | United States of America | New York | Tompkins Co. Flats at southwest… | — |
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| Juniperus deppeana Steud. var. deppeana | R. T. Clausen 5235 | 01 Sep 1940 | United States of America | New Mexico | Doña Ana Co. Mesa, western… | — |
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| Pinus taeda L. | R. T. Clausen 66-1 | 22 Mar 1966 | United States of America | South Carolina | Kershaw Co. North of Flat… | — |
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| Abies balsamea (L.) Mill. | R. T. Clausen 6506 | 08 Apr 1945 | United States of America | New York | Tompkins Co. Fir Tree Swamp,… | — |
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| Abies balsamea (L.) Mill. | R. T. Clausen 5673 | 04 Oct 1941 | United States of America | Pennsylvania | Potter Co. Susquehanna River drainage.… | — |
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| Pinus edulis Engelm. | R. T. Clausen 7803 | 18 Jun 1949 | United States of America | New Mexico | Otero Co. Middle Ridge of… | — |
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| Pinus flexilis E.James | R. T. Clausen 641212 | 05 Sep 1964 | United States of America | California | Mono Co. Sierra Nevada. On… | — |
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| Picea glauca (Moench) Voss | R. T. Clausen s.n. | 16 Jul 1956 | United States of America | Vermont | Orleans Co. South of junction… | — |
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| Senna roemeriana (Scheele) H.S.Irwin & Barneby | R. T. Clausen 7649 | 06 May 1949 | United States of America | Texas | Bell Co. 1 mile south… | — |
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| Larix eurolepis A.Henry | R. T. Clausen 10144 | 11 Mar 1939 | United States of America | New York | Monroe Co. Highland Park, Rochester | — |
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| Pinus banksiana Lamb. | R. T. Clausen 71-27 | 26 Aug 1971 | United States of America | New York | Essex Co. On west side… | — |
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| Mesembryanthemum crystallinum L. | R. T. Clausen 4696 | 20 Jun 1940 | United States of America | California | San Diego Co. Sand bluffs… | — |
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| Euphorbia esula L. | R. T. Clausen s.n. | 30 Jul 1960 | United States of America | New York | Seneca Co. Gravelly shore of… | — |
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| Barbula unguiculata Hedw. | R. T. Clausen | 03 Apr 1940 | United States of America | New Jersey | Bergen Co. On aqueduct N… | — | ||||
| 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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| Silene petersonii Maguire var. petersonii | R. T. Clausen 5109 | 18 Aug 1940 | United States of America | Utah | Iron Co. On slope at… | — |
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| Tsuga caroliniana Engelm. | R. T. Clausen 10355 | 11 May 1939 | United States of America | New York | Monroe Co. Highland Park, Rochester | — |
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| Tsuga caroliniana Engelm. | R. T. Clausen 5610 | 08 Sep 1941 | United States of America | North Carolina | Burke Co. Southern Blue Ridge:… | — |
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| Eriogonum racemosum Nutt. | R. T. Clausen 5106 | 18 Aug 1940 | United States of America | Utah | Kane Co. Sevier Lake Basin | — |
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| Diervilla sessilifolia Buckley | R. T. Clausen s.n. | 21 Aug 1960 | United States of America | North Carolina | Investor Gap, 3 km south… | — |
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| Taxus canadensis Marshall | R. T. Clausen 6504 | 08 Apr 1945 | United States of America | New York | Tompkins Co. Fir Tree Swamp,… | — |
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| Pinus palustris Mill. | R. T. Clausen 6944 | 08 Apr 1947 | United States of America | Georgia | Meriwether Co. Summit of Pine… | — |
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| Sedum wrightii subsp. priscum R.T.Clausen | R. T. Clausen 75-83 | 01 Aug 1979 | United States of America | New York | Tompkins Co. Greenhouse. Source: "Sacramento… | isotype |
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| Carex blanda Dewey | R. T. Clausen 5790 | 31 May 1942 | United States of America | New York | Tioga Co. North bank of… | — |
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| Picea glehnii (F.Schmidt) Mast. | R. T. Clausen 8049 | 25 Feb 1951 | United States of America | New York | Tompkins Co. South slope of… | — |
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| Abies fraseri (Pursh) Poir. | R. T. Clausen 3690 | 21 Sep 1938 | United States of America | North Carolina | McDowell Co. Slope of Mt.… | — |
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| Abies fraseri (Pursh) Poir. | R. T. Clausen 5583 | 04 Sep 1941 | United States of America | North Carolina | Avery Co. Near summit of… | — |
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| Cytisus scoparius (L.) Link | R. T. Clausen 6771 | 14 Apr 1946 | United States of America | Virginia | Prince Edward Co. James River… | — |
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| Cytisus scoparius (L.) Link | R. T. Clausen 6771 | 14 Apr 1946 | United States of America | Virginia | Prince Edward Co. James River… | — |
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| Thuja plicata Donn ex D.Don | R. T. Clausen 63250 | 05 Jul 1963 | United States of America | Oregon | Coos Co. Coquille River Drainage:… | — |
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| Thuja plicata Donn ex D.Don | R. T. Clausen 651125 | 05 Aug 1965 | United States of America | Oregon | Lane Co. Willamette River drainage:… | — |
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| Thuja plicata Donn ex D.Don | R. T. Clausen 5023 | 03 Aug 1940 | United States of America | Oregon | Clackamas Co. Willamette River drainage:… | — |
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| Penstemon newberryi A.Gray var. newberryi | R. T. Clausen 4845 | 09 Jul 1940 | United States of America | California | Mono Co. Rocky slope of… | — |
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| Trollius laxus Salisb. | R. T. Clausen 6512 | 08 Apr 1945 | United States of America | New York | Tompkins Co. Danby Township | — |
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| Juniperus communis L. | R. T. Clausen 5152 | 22 Aug 1940 | United States of America | Nevada | Clark Co. Above Cathedral Rock | — |
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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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| Pinus virginiana Mill. | R. T. Clausen 3677 | 19 Sep 1938 | United States of America | South Carolina | Pickens Co. Top of Table… | — |
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| Pinus virginiana Mill. | R. T. Clausen 6864 | 24 Jun 1946 | United States of America | Georgia | Walker Co. 2 miles west… | — |
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| Pinus virginiana Mill. | R. T. Clausen 6935 | 05 Apr 1947 | United States of America | Virginia | Madison Co. Along road 2… | — |
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| Ranunculus aquatilis var. diffusus With. | R. T. Clausen 5114 | 18 Aug 1940 | United States of America | Utah | Kane Co. Lake at Duck… | — |
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| Abies concolor (Gordon) Lindl. ex Hildebr. | R. T. Clausen 8047 | 25 Feb 1951 | United States of America | New York | Tompkins Co. Slope below University… | — |
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| Abies concolor (Gordon) Lindl. ex Hildebr. | R. T. Clausen 5232 | 30 Aug 1940 | United States of America | Arizona | Cochise Co. Gila River Basin.… | — |
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| Penstemon ambiguus var. laevissimus (D.D.Keck) N.H.Holmgren | R. T. Clausen 4616 | 11 Jun 1940 | United States of America | New Mexico | Bernalillo Co. Mesa northeast of… | — |
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| Picea glauca (Moench) Voss var. glauca | R. T. Clausen 6261 | 16 Apr 1944 | United States of America | New York | Tompkins Co. Michigan Hollow Swamp,… | — |
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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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| Tsuga canadensis (L.) Carrière | R. T. Clausen 5605 | 07 Sep 1941 | United States of America | North Carolina | Watauga Co. Southern Blue Ridge:… | — |
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| Pinus monophylla Torr. & Frém. | R. T. Clausen 4864 | 11 Jul 1940 | United States of America | California | Mono Co. Sierra Nevada: Just… | — |
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| Eriocaulon parkeri B.L.Rob. | R. T. Clausen 5535 | 24 Aug 1941 | United States of America | Connecticut | New London Co. Sheldon's Cove,… | — |
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| Gentiana affinis Griseb. | R. T. Clausen 726 | 20 Aug 1938 | United States of America | Idaho | Bingham Co. Ross Fork Creek. | — |
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| Betula occidentalis Hook. | R. T. Clausen 641211 | 05 Sep 1964 | United States of America | California | Mono Co. Along west side… | — |
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| Juniperus scopulorum Sarg. | R. T. Clausen 8185 | 09 Jun 1952 | United States of America | North Dakota | Billings Co. Cedar Canyon, east… | — |
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| Polygonum aviculare subsp. buxiforme (Small) Costea & Tardif | R. T. Clausen 5099 | 17 Aug 1940 | United States of America | Utah | Garfield Co. Colorado Plateau, Sevier… | — |
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| Bromus tectorum L. | R. T. Clausen 3195 | 13 Jun 1939 | United States of America | New Jersey | Passaic Co. At nursery of… | — |
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| Chamaecyparis lawsoniana (A.Murray bis) Parl. | R. T. Clausen 63261 | 11 Jul 1963 | United States of America | Oregon | Coos Co. Ridge between Offield… | — |
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| Pinus jeffreyi Grev. & Balf. | R. T. Clausen 63065 | 24 Apr 1963 | United States of America | California | Riverside Co. Transverse Ranges. Summit… | — |
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| Azolla caroliniana Willd. | R. T. Clausen | W. A. Hinkey 4130 | 27 Aug 1939 | United States of America | New York | Monroe Co. Near mouth of… | — |
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| Azolla caroliniana Willd. | R. T. Clausen | W. A. Hinkey 4124 | 10 Aug 1939 | United States of America | New York | Cayuga Co. Sterling Pond, North… | — |
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| Pinus ponderosa Douglas ex C.Lawson | R. T. Clausen 61.193.8 | 12 Jul 1961 | United States of America | Washington | Chelan Co. Northern Cascade Mountains,… | — |
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| Sphagnum rubellum Wilson | R. T. Clausen 7140 | 17 Aug 1947 | United States of America | Vermont | Franklin Co. 2 km. south… | — | ||||
| Thuja occidentalis L. | R. T. Clausen 5509 | 10 Aug 1941 | United States of America | New York | Ontario Co. Town of Naples,… | — | ||||
| Picea abies (L.) H.Karst. | R. T. Clausen 6255 | 19 Mar 1944 | United States of America | New York | Tompkins Co. 2.4 km. southeast… | — |
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