FH: 00470032 Peltigera polydactyla (Necker) Hoffmann USA: New Hampshire Mt. Monadnock: [no additional data] C. W. Swan 1883
Amaranthaceae NEBC: 00592039 Amaranthus spinosus Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1883-8-1
Anacardiaceae NEBC: 00752600 Rhus typhina Linnaeus USA: Massachusetts Chelmsford: Chelmsford, Robbins Hill C. W. Swan 1883-8-7
Asteraceae NEBC: 00531726 Artemisia stelleriana Besser USA: Massachusetts Tewksbury: Tewksbury C. W. Swan 1883-7-10
GH: 01021499 Aster paniculatus Lamarck USA: Massachusetts Lowell: Near Lowell C. W. Swan 1883
GH: 01021499 Aster sp. USA: Massachusetts Lowell: Near Lowell C. W. Swan 1883
NEBC: 01037836 Bidens laevis (Linnaeus) Britton, Stearn & Poggenburg USA: Massachusetts Billerica: Billerica C. W. Swan 1883-9-16
NEBC: 00633985 Crepis foetida Linnaeus USA: Massachusetts Lowell: Lowell, Graniteville C. W. Swan 1883-8-22
NEBC: 01008092 Helianthus decapetalus Linnaeus USA: Massachusetts Tewksbury: Tewksbury C. W. Swan 1883-7-7
NEBC: 00576017 Onopordum acanthium Linnaeus USA: Massachusetts Chelmsford: Chelmsford C. W. Swan 1883-8-7
NEBC: 00735185 Senecio viscosus Linnaeus USA: Massachusetts Boston: Boston C. W. Swan 1883-9-20
NEBC: 01077115 Sericocarpus linifolius (Linnaeus) Britton, Stearn & Poggenburg USA: Massachusetts Chelmsford: Chelmsford C. W. Swan 1883-7-14
GH: 01021499 Symphyotrichum sp. USA: Massachusetts Lowell: Near Lowell C. W. Swan 1883
Athyriaceae NEBC: 00746572 Cystopteris tenuis (Michaux) Desvaux USA: Massachusetts Tewksbury: Tewksbury, Trull Brook C. W. Swan 1883-7-18
Betulaceae NEBC: 00634446 Betula lenta Linnaeus USA: Massachusetts Dracut: Dracut C. W. Swan 1883-8-13
NEBC: 00678979 Betula nigra Linnaeus USA: Massachusetts Lowell: Lowell, Fort Hill C. W. Swan 1883-7-11
NEBC: 00727216 Carpinus caroliniana virginiana (Marsh.) Furlow USA: Massachusetts Boston: Roxbury C. W. Swan 1883-6-22
NEBC: 00627880 Corylus americana Walter USA: Massachusetts Bedford: Bedford C. W. Swan 1883-4-14
NEBC: 00662027 Ostrya virginiana (Miller) K. Koch USA: Massachusetts Boston: Dorchester C. W. Swan 1883-5-18
Blechnaceae NEBC: 00628449 Woodwardia virginica (Linnaeus) Smith USA: Massachusetts Chelmsford: Chelmsford C. W. Swan 1883-7-3
Brassicaceae NEBC: 00359161 Arabis drummondi A. Gray USA: Massachusetts Dracut: Merrimack River, Dracut C. W. Swan 1883-7-21
NEBC: 00359161 Boechera stricta (Graham) Al-Shehbaz USA: Massachusetts Dracut: Merrimack River, Dracut C. W. Swan 1883-7-21
NEBC: 00592724 Camelina microcarpa Andrzejowski ex de Candolle USA: Massachusetts Westford: Westford, Woolen-Mill yard, Granit... C. W. Swan 1883-8-22
NEBC: 00617797 Erysimum cheiranthoides Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1883-7-16
NEBC: 00735123 Erysimum odoratum Ehrhart USA: Massachusetts Westford: Westford, Graniteville C. W. Swan 1883-8-12
NEBC: 00735123 Erysimum sp. USA: Massachusetts Westford: Westford, Graniteville C. W. Swan 1883-8-12
NEBC: 00582703 Sisymbrium altissimum Linnaeus USA: Massachusetts Tewksbury: Tewksbury C. W. Swan 1883-7-10
NEBC: 00691719 Sisymbrium loeselii Linnaeus USA: Massachusetts Westford: Westford, Graniteville C. W. Swan 1883-8-22
Campanulaceae NEBC: 00820481 Campanula rotundifolia Linnaeus USA: Massachusetts Dracut: Dracut C. W. Swan 1883-7-19
NEBC: 00820484 Campanula rotundifolia Linnaeus USA: Massachusetts Dracut: Dracut C. W. Swan 1883-7-19
Caprifoliaceae NEBC: 00691260 Linnaea borealis americana (Forbes) Rehder USA: Massachusetts Chelmsford: West Chelmsford C. W. Swan 1883-7-27
NEBC: 00702208 Viburnum acerifolium Linnaeus USA: Massachusetts Boston: Longwood C. W. Swan 1883-6-14
Caryophyllaceae NEBC: 00732920 Silene antirrhina Linnaeus USA: Massachusetts Lexington: Lexington C. W. Swan 1883-8-6
NEBC: 00693611 Stellaria alsine Grimm USA: Massachusetts Lowell: Lowell C. W. Swan 1883-7-11
Chenopodiaceae NEBC: 00598509 Atriplex patula Linnaeus USA: Massachusetts Lowell: Lowell, Little Canada C. W. Swan 1883
NEBC: 00598936 Chenopodium capitatum (Linnaeus) Ascherson USA: Massachusetts Lowell: Lowell C. W. Swan 1883-8-15
NEBC: 00732331 Salsola kali Linnaeus USA: Massachusetts Boston: W. [West] Boston Flats C. W. Swan 1883-9-26
Cistaceae NEBC: 00757198 Lechea maritima Leggett ex Britton USA: Massachusetts Bedford: Bedford C. W. Swan 1883-7-16
Cyperaceae NEBC: 00217475 Carex alata Torrey USA: Massachusetts Chelmsford: C. W. Swan 1883-7-3
NEBC: 01161578 Carex platyphylla J. Carey USA: Connecticut Middletown: Middletown C. W. Swan 1883-6-2
GH: 00802441 Carex seorsa Howe USA: Massachusetts C. W. Swan 1883-6-21
Ericaceae NEBC: 01013470 Andromeda polifolia glaucophylla (Link) de Candolle USA: Massachusetts Tewksbury: Long Pond, Tewksbury C. W. Swan 1883-6-3
NEBC: 01039305 Kalmia polifolia Wangenheim USA: Massachusetts Westford: Westford C. W. Swan 1883-8-25
NEBC: 00519436 Vaccinium corymbosum Linnaeus USA: Massachusetts Tewksbury: Tewksbury C. W. Swan 1883
Fabaceae NEBC: 00747719 Crotalaria sagittalis Linnaeus USA: Massachusetts Chelmsford: W. [West] Chelmsford C. W. Swan 1883-7-27
NEBC: 00558560 Desmodium nudiflorum (Linnaeus) de Candolle USA: Massachusetts Lowell: Lowell, Fort Hill C. W. Swan 1883-8-17
NEBC: 00534449 Medicago polymorpha Linnaeus USA: Massachusetts Dracut: Dracut, Woolen Mills C. W. Swan 1883-8-1
NEBC: 00534787 Robinia viscosa Ventenat USA: Massachusetts Boston: W. [West] Boston Flats C. W. Swan 1883-9-19
NEBC: 00639984 Tephrosia virginiana (Linnaeus) Persoon USA: Massachusetts Chelmsford: Chelmsford C. W. Swan 1883-7-3
Fagaceae NEBC: 00676063 Quercus prinoides Willdenow USA: Massachusetts Lowell: Lowell C. W. Swan 1883-7-15
Geraniaceae NEBC: 00761070 Erodium cicutarium (Linnaeus) L'Heritier ex Aiton USA: Massachusetts Dracut: Dracut C. W. Swan 1883-8-1
Juncaceae NEBC: 00860768 Juncus marginatus Rostkovius USA: Massachusetts Bedford: Bedford C. W. Swan 1883-7-7
NEBC: 00734111 Juncus trifidus Linnaeus USA: New Hampshire Jaffrey: Jaffrey C. W. Swan 1883-8-10
Lamiaceae NEBC: 00505836 Hedeoma pulegioides (Linnaeus) Persoon USA: Massachusetts Dracut: Collinsville C. W. Swan 1883-8-1
NEBC: 00611456 Mentha piperita Linnaeus USA: Massachusetts Westford: Westford C. W. Swan 1883-9-5
NEBC: 00642121 Monarda fistulosa mollis (Linnaeus) Bentham USA: Massachusetts Lowell: Lowell, Fort Hill C. W. Swan 1883-8-17
Lentibulariaceae NEBC: 00664356 Utricularia radiata Small USA: Massachusetts Tewksbury: Tewksbury, Long P. [Pond] C. W. Swan 1883-7-17
Lycopodiaceae NEBC: 00690701 Lycopodium clavatum Linnaeus USA: New Hampshire [Mount] Monadnock C. W. Swan 1883-8-10
NEBC: 00632204 Spinulum annotinum (Linnaeus) A. Haines USA: New Hampshire Mount Monadnock C. W. Swan 1883-8-10
Moraceae NEBC: 00761819 Morus alba Linnaeus USA: Massachusetts Dracut: Dracut C. W. Swan 1883-7-14
Oleaceae NEBC: 01076827 Fraxinus pennsylvanica Marshall USA: Massachusetts Dracut: Dracut C. W. Swan 1883-8-13
Poaceae NEBC: 00685769 Alopecurus myosuroides Hudson USA: Massachusetts Lowell: Lowell C. W. Swan 1883-9-6
NEBC: 00880228 Bromus Linnaeus USA: Massachusetts Billerica: No. [North] Billerica C. W. Swan 1883-7-24
NEBC: 00613090 Bromus hordeaceus Linnaeus USA: Massachusetts Billerica: No. [North] Billerica C. W. Swan 1883-7-24
NEBC: 00613228 Bromus secalinus Linnaeus USA: Massachusetts Lowell: Lowell, Fort Hill C. W. Swan 1883-7-11
NEBC: 00635546 Cenchrus longispinus (Hackel) Fernald USA: Massachusetts Dracut: Dracut C. W. Swan 1883-8-2
NEBC: 00878213 Cinna arundinacea Linnaeus USA: Massachusetts Westford: Westford C. W. Swan 1883-8-25
NEBC: 00879145 Eragrostis pectinacea (Michaux) Steudel USA: Massachusetts Lowell: Lowell, "Little Canada" C. W. Swan 1883-9-6
NEBC: 00685779 Gastridium ventricosum (Gouan) Schinz & Thellung USA: Massachusetts Billerica: No. [North] Billerica C. W. Swan 1883-7-24
NEBC: 00359676 Leersia virginica Willdenow USA: Massachusetts Medford: Pine Hill [Middlesex Fells Reservat... C. W. Swan 1883-7-18
NEBC: 00817705 Leersia virginica Willdenow USA: Massachusetts Tewksbury: Tewksbury C. W. Swan 1883-7-18
NEBC: 00359676 Leersia virginica ovata (Poiret) Fernald USA: Massachusetts Medford: Pine Hill [Middlesex Fells Reservat... C. W. Swan 1883-7-18
NEBC: 00765952 Leptochloa panicea mucronata (Michaux) Nowack USA: Massachusetts Lowell: Lowell C. W. Swan 1883-9-6
NEBC: 00685802 Polypogon monspeliensis (Linnaeus) Desfontaines USA: Massachusetts Billerica: N. [North] Billerica, Woollen-mil... C. W. Swan 1883-7-24
NEBC: 00598131 Setaria italica (Linnaeus) P. Beauvois USA: Massachusetts Dracut: Dracut C. W. Swan 1883-8-1
NEBC: 01175196 Sporobolus cryptandrus A. Gray USA: Massachusetts Dracut: Dracut C. W. Swan 1883-8-2
NEBC: 00614614 Vulpia myuros (Linnaeus) C. C. Gmelin USA: Massachusetts Billerica: N. [North] Billerica C. W. Swan 1883-7-24
Portulacaceae NEBC: 00759698 Portulaca grandiflora Hooker USA: Massachusetts Lowell: Lowell C. W. Swan 1883-8-8
Rosaceae NEBC: 00688902 Geum aleppicum strictum Fernald USA: Massachusetts Tewksbury: Tewksbury C. W. Swan 1883-7-10
NEBC: 00688903 Geum aleppicum strictum Fernald USA: Massachusetts Chelmsford: N. [North] Chelmsford C. W. Swan 1883-7-27
NEBC: 00756300 Potentilla fruticosa (Linnaeus) Rydberg USA: Massachusetts Groton: Groton C. W. Swan 1883-8-25
NEBC: 00524796 Rosa micrantha Borrer ex Smith USA: Massachusetts Boston: Roxbury, near Glen Road C. W. Swan 1883-9-26
NEBC: 00651654 Rubus odoratus Linnaeus USA: Massachusetts Dracut: Dracut C. W. Swan 1883-7-19
Rutaceae NEBC: 00771422 Ptelea trifoliata Linnaeus USA: Massachusetts Boston: Roxbury, Glen Road C. W. Swan 1883-9-26
Salicaceae NEBC: 00724995 Salix bebbiana Sargent USA: Massachusetts Cheshire: Cheshire C. W. Swan 1883-6-6
Saxifragaceae NEBC: 00730462 Ribes americanum Miller USA: Massachusetts Dracut: Dracut C. W. Swan 1883-5-30
Selaginellaceae NEBC: 00738019 Selaginella rupestris (Linnaeus) Spring USA: Massachusetts Groton: Groton C. W. Swan 1883-8-25
Solanaceae NEBC: 00685577 Nicotiana bigelovii (Torrey) S. Watson USA: Massachusetts Lowell: Lowell C. W. Swan 1883-8-15
Ulmaceae NEBC: 00702723 Celtis occidentalis Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1883-8-17
Xyridaceae NEBC: 00875486 Xyris difformis Chapman USA: Massachusetts Bedford: Bedford C. W. Swan 1883-8-5
