Displaying 1 - 50 out of 6899 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Hedwigia albicans var. detonsa M.Howe | M. A. Howe 807 | 15 May 1896 | United States of America | California | Mendocino Co. Pieta | syntype | 474196 |
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| Blepharostoma arachnoideum M.Howe | M. A. Howe 703 | 09 May 1896 | United States of America | California | Russian Gulch, Mendocino | isotype | 234740 |
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| Blepharostoma arachnoideum M.Howe | M. A. Howe 703 | 09 May 1896 | United States of America | California | Russian Gulch, near Mendocino | isotype | 234741 |
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| Blepharostoma arachnoideum M.Howe | M. A. Howe 703 | 09 May 1896 | United States of America | California | Russian Gulch, Mendocino | isotype | 234742 |
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| Blepharostoma arachnoideum M.Howe | M. A. Howe 703 | 09 May 1896 | United States of America | California | Mendocino Co. Russian Gulch | isotype | 234743 |
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| Blepharostoma arachnoideum M.Howe | M. A. Howe | 09 May 1896 | United States of America | California | Russian Gulch, near Mendocino | isotype | 234744 |
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| Blepharostoma arachnoideum M.Howe | M. A. Howe 703 | 09 May 1896 | United States of America | California | Russian Gulch, near Mendocino | holotype | 291904 |
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| Blepharostoma arachnoideum M.Howe | M. A. Howe 703 | 09 May 1896 | United States of America | California | Russian Gulch, near Mendocino | isotype | 00291905 |
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| Dicranella howei Renauld & Cardot | M. A. Howe 36 | 05 Apr 1892 | United States of America | California | Marin Co. Mt. Tamalpais | type | 299910 |
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| Dicranella howei Renauld & Cardot | M. A. Howe 36 | Apr 1892 | United States of America | California | Marin Co. Mt. Tamalpais | type | 299911 |
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| Dicranella howei Renauld & Cardot | M. A. Howe | 1892 | United States of America | California | Marin Co. | type | 299912 |
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| Porella dentata (Hartm.) Lindb. | M. A. Howe 1084 | 08 Jun 1896 | United States of America | California | Humboldt Co. Russ and Graham's… | — | 240347 |
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| Clevea hyalina var. californica M.Howe | M. A. Howe 765 | 13 May 1896 | United States of America | California | Doolan's Canyon, near Ukiah (Mendecino… | type | 575661 |
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| Clevea hyalina var. californica M.Howe | M. A. Howe | 1896 | United States of America | California | Mendocino Co. | type fragment | 575664 |
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| Clevea hyalina var. californica M.Howe | M. A. Howe 765 | — | United States of America | California | Mendocino Co. | type fragment | 575665 |
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| Cupressus goveniana Gordon | M. A. Howe s.n. | 05 May 1896 | United States of America | California | "Plains" near Mendocino City | — | 16865 |
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| Botrychium dissectum Spreng. | M. A. Howe s.n. | 31 Oct 1898 | United States of America | New York | Bronx Co. Van Cortlandt Park | — | 02172968 |
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| Botrychium dissectum Spreng. | M. A. Howe s.n. | 31 Oct 1898 | United States of America | New York | Bronx Co. Van Cortlandt Park | — | 02172971 |
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| Gyrothyra underwoodiana M.Howe | M. A. Howe 1026 | 05 Jun 1896 | United States of America | California | Humboldt Co. On the road… | type | 564824 |
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| Pseudoleskea rigescens var. howei Best | M. A. Howe | 05 Aug 1894 | United States of America | — | Above Neal's Camp, Mt. Shasta | type | 534714 |
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| Pseudoleskea rigescens var. howei Best | M. A. Howe 115 | 05 Aug 1894 | United States of America | California | Above Neal's Camp, Mt. Shasta.… | probable type | 534715 |
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| Pseudoleskea rigescens var. howei Best | M. A. Howe 115 | 24 Jul 1894 - 10 Aug 1894 | United States of America | California | Above Neal's Camp, Mt. Shasta.… | probable type | 534716 |
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| Pseudoleskea rigescens var. howei Best | M. A. Howe 115 | Aug 1894 | United States of America | California | Mt. Shasta | probable type | 534717 |
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| Pseudoleskea rigescens var. howei Best | M. A. Howe 115 | 05 Aug 1894 | United States of America | California | Above Neal's Camp, Mt. Shasta | probable type | 534718 |
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| Pleuridium alternifolium var. howei Renauld & Cardot | M. A. Howe 37 | 19 May 1892 | United States of America | California | type | 769411 |
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| Frullania riojaneirensis (Raddi) Spruce | M. A. Howe 814 | 15 Mar 1906 | Puerto Rico | — | Mount Morales, near Utuado | — | 574296 |
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| Frullania riojaneirensis (Raddi) Spruce | M. A. Howe 1096 | 19 Mar 1906 | Puerto Rico | — | Mount Morales, near Utuado | — | 574298 |
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| Frullania riojaneirensis (Raddi) Spruce | M. A. Howe 484 | 15 Mar 1906 | Puerto Rico | — | Mount Morales, near Utuado | — | 574301 |
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| Lopholejeunea howei A.Evans | M. A. Howe 1413p.p. | 05 Mar 1906 | Puerto Rico | — | Between Cayey and Caguas; Coamo… | type | 582189 |
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| Asplenium scolopendrium var. americanum (Fernald) Kartesz & K.N.Ghandi | M. A. Howe s.n. | 04 Jul 1902 | United States of America | New York | Onondaga Co. Green Lake region | — | 9605 |
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| Metaneckera menziesii (Drumm.) Steere | M. A. Howe 45 | 25 Nov 1892 | United States of America | California | Marin Co. | — | 465834 |
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| Metaneckera menziesii (Drumm.) Steere | M. A. Howe | 08 Aug 1894 | United States of America | California | Shasta Springs | — | 465835 |
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| Metaneckera menziesii (Drumm.) Steere | M. A. Howe | 29 Feb 1896 | United States of America | California | Contra Costa Co. Mitchell's Cañon,… | — | 465848 |
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| Metaneckera menziesii (Drumm.) Steere | M. A. Howe | Mar 1896 | United States of America | California | Sonoma Co. | — | 465845 |
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| Metaneckera menziesii (Drumm.) Steere | M. A. Howe 778 | 13 May 1896 | United States of America | California | Mendocino Co. Doolan's Cañon | — | 465846 |
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| Metaneckera menziesii (Drumm.) Steere | M. A. Howe 700 | 09 May 1896 | United States of America | California | Mendocino Co. Russian Gulch | — | 465847 |
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| Isothecium howei Kindb. | M. A. Howe | 16 Jan 1892 | United States of America | California | Marin Co. The "Old Mill"… | type | 693099 |
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| Hylocereus monacanthus (Lem.) Britton & Rose | M. A. Howe s.n. | — | Panama | — | Urava Islands. | — | 679790 |
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| Isothecium howei Kindb. | M. A. Howe | 16 Jan 1892 | United States of America | California | Marin Co. | type | 734850 |
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| Halimeda simulans M.Howe | M. A. Howe 4332 | 06 Mar 1906 | Puerto Rico | — | Culebra Island | holotype | 00887502 |
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| Halimeda simulans M.Howe | M. A. Howe 4383 | 08 Mar 1906 | Puerto Rico | — | Culebra Island | paratype | 00887503 |
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| Halimeda scabra M.Howe | M. A. Howe 2905 | 30 Mar 1904 | United States of America | Florida | Sands Key | holotype | 00887511 |
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| Halimeda lacrimosa M.Howe | M. A. Howe 5524 | 11 Dec 1907 | Bahamas | — | Mariguana [Mayaguana], Southeast Point | holotype | 00887523 |
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| Acetabulum pusillum M.Howe | M. A. Howe 5731 b | 22 Dec 1907 | Bahamas | — | Castle Island, near Acklin Island,… | paratype | 00887528 |
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| Acetabulum pusillum M.Howe | M. A. Howe 5453 | 09 Dec 1907 | Bahamas | — | Mariguana [Mayaguana], near Southeast Point | paratype | 00887529 |
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| Cladocephalus scoparius M.Howe | M. A. Howe 3081 | 10 Apr 1904 | Bahamas | — | south shore of New Providence | paratype | 00887530 |
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| Avrainvillea digitata D.S.Littler & Littler | M. A. Howe 5436 | 08 Dec 1907 | Bahamas | — | Mariguana [Mayaguana], Abraham Bay, on… | isotype | 00887553 |
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| Avrainvillea digitata D.S.Littler & Littler | M. A. Howe 5436 | 08 Dec 1907 | Bahamas | — | Mariguana [Mayaguana], Abraham Bay, on… | isotype | 00887554 |
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| Avrainvillea digitata D.S.Littler & Littler | M. A. Howe 5436 | 08 Dec 1907 | Bahamas | — | Mariguana [Mayaguana], Abraham Bay, on… | isotype | 00887556 |
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| Avrainvillea nigricans f. fulva M.Howe | M. A. Howe 5745 | 22 Dec 1907 | Bahamas | — | Castle Island. inside a reef,… | — | 00887561 |
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