Harvard University Herbaria & Libraries

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FH: 00250134 Stemonitis fusca Roth USA: Connecticut H. W. Preston 1901-8
FH: 00250137 Stemonitis fusca Roth USA: Connecticut H. W. Preston 1901
FH: 00250139 Stemonitis fusca Roth USA: Connecticut H. W. Preston 1901-10
Aizoaceae
NEBC: 00761333 Mollugo verticillata Linnaeus USA: Rhode Island Providence: Providence H. W. Preston
Caryophyllaceae
NEBC: 00575553 Silene caroliniana Walter USA: Rhode Island North Kingstown: North Kingstown H. W. Preston 1878-5-29
Fabaceae
NEBC: 00558590 Desmodium nudiflorum (Linnaeus) de Candolle USA: Massachusetts Princeton: Princeton H. W. Preston 1879-8-11
Fagaceae
NEBC: 00662860 Quercus montana Willdenow USA: Rhode Island West Greenwich: West Greenwich H. W. Preston 1925-9-7
Onagraceae
NEBC: 00707815 Oenothera fruticosa glauca (Michaux) Straley USA: Rhode Island Cranston: Cranston H. W. Preston
Ophioglossaceae
NEBC: 00654817 Botrychium dissectum Sprengel USA: Massachusetts Princeton: Princeton H. W. Preston 1908
NEBC: 00690091 Botrychium multifidum (S. G. Gmelin) Ruprecht USA: New Hampshire Bethlehem: Bethlehem H. W. Preston 1887-7-27
Oxalidaceae
NEBC: 01070134 Oxalis stricta Linnaeus USA: Connecticut West Thompson H. W. Preston 1878-7-16
Pinaceae
A: 00230832 Larix laricina (Du Roi) Koch USA: Rhode Island Burrillville: Cedar Swamp Pond H. W. Preston
A: 00231036 Picea mariana (Miller) Brittan, Sterns & Poggenburg USA: Rhode Island Burrillville: H. W. Preston 1904-6-1
Polygalaceae
NEBC: 00558263 Polygala paucifolia Willdenow USA: Rhode Island Scituate: Scituate H. W. Preston 1879-5-30
Rosaceae
NEBC: 00644051 Dalibarda repens Linnaeus USA: Massachusetts Princeton: Princeton H. W. Preston 1879
NEBC: 00653405 Potentilla simplex Michaux USA: Rhode Island Cranston: Cranston H. W. Preston 1879-5-29
GH: 00758809 Rubus canadensis Linnaeus USA: Rhode Island Glocester: Glocester H. W. Preston 1903-6-2