Alismataceae NEBC: 01032394 Echinodorus tenellus (Martius) Buchenau USA: Massachusetts Winchester: Winchester, Winter Pond C. W. Swan 1884-8-24
Asclepiadaceae NEBC: 00750162 Asclepias purpurascens Linnaeus USA: Massachusetts Dracut: Dracut C. W. Swan 1884-8-1
Asteraceae NEBC: 00735626 Bidens aristosa (Michaux) Britton USA: Massachusetts Dracut: Dracut (Lowell) C. W. Swan 1884-9-16
NEBC: 01037831 Bidens laevis (Linnaeus) Britton, Stearn & Poggenburg USA: Massachusetts Acton: Acton C. W. Swan 1884-9-6
NEBC: 00577615 Centaurea stoebe micranthos (Gugler) Hayek USA: Massachusetts Westford: Westford, Woolen Mills C. W. Swan 1884-9-15
NEBC: 00753532 Eupatorium perfoliatum Linnaeus USA: Massachusetts Dracut: Dracut, Beaver brook C. W. Swan 1884-9-7
NEBC: 00295882 Gamochaeta pensylvanica (Willdenow) Cabrera USA: Massachusetts Lowell: C. W. Swan 1884-8-6
NEBC: 00535565 Helianthus annuus Linnaeus USA: Massachusetts Westford: Westford, Woollen Mills, Granitevi... C. W. Swan 1884-9-15
NEBC: 00735467 Parthenium hysterophorus Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1884-9-11
Berberidaceae NEBC: 00834021 Podophyllum peltatum Linnaeus USA: Massachusetts Shirley: Shirley C. W. Swan 1884-8-12
Boraginaceae NEBC: 00718926 Buglossoides arvensis (Linnaeus) I. M. Johnston USA: Massachusetts Boston: West Boston, New lands C. W. Swan 1884-5-17
NEBC: 00643494 Scorpiurus muricatus Linnaeus USA: Massachusetts Westford: Westford, near woollen-mills, Gran... C. W. Swan 1884-9-15
Brassicaceae NEBC: 01065477 Boechera canadensis (Linnaeus) Al-Shehbaz USA: Massachusetts Chelmsford: Chelmsford C. W. Swan 1884-9-8
NEBC: 00593221 Brassica juncea (Linnaeus) Czernajew USA: Massachusetts Dracut: Dracut C. W. Swan 1884-8-4
NEBC: 00593429 Brassica rapa Linnaeus USA: Massachusetts Dracut: (Dracut) Lowell C. W. Swan 1884-8-4
NEBC: 00617459 Descurainia sophia (Linnaeus) Webb ex Prantl USA: Massachusetts Lowell: Billerica road C. W. Swan 1884-6-15
NEBC: 00617462 Descurainia sophia (Linnaeus) Webb ex Prantl USA: Massachusetts Chelmsford: Chelmsford C. W. Swan 1884
NEBC: 00612192 Sinapis alba Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-4
Caprifoliaceae NEBC: 00312802 Lonicera tatarica Linnaeus USA: Massachusetts Blue Hills [Reservation] C. W. Swan 1884-5-30
NEBC: 00312802 Lonicera xylosteum Linnaeus USA: Massachusetts Blue Hills [Reservation] C. W. Swan 1884-5-30
NEBC: 00685911 Symphoricarpos occidentalis Hooker USA: Massachusetts Boston: Boston C. W. Swan 1884-9-26
NEBC: 00765781 Symphoricarpos occidentalis Hooker USA: Massachusetts Boston: Boston C. W. Swan 1884-6-24
Cistaceae NEBC: 00757943 Lechea tenuifolia Michaux USA: Massachusetts Winchester: Winchester, Winter Pond C. W. Swan 1884-8-24
Convolvulaceae NEBC: 00714959 Cuscuta pentagona Engelmann USA: Massachusetts Winchester: Winchester, Winter Pond C. W. Swan 1884-8-27
NEBC: 00633978 Ipomoea hederacea Jacquin USA: Massachusetts Lowell: Lowell, Little Canada C. W. Swan 1884-9-16
NEBC: 00668544 Ipomoea hirsutula Jacq. f. USA: Massachusetts Lowell: Dracut dump, Lowell C. W. Swan 1884-9-16
NEBC: 00633970 Ipomoea lacunosa Linnaeus USA: Massachusetts Lowell: Lowell, Little Canada C. W. Swan 1884-9-11
Cyperaceae NEBC: 00135675 Carex acutiformis Ehrhart USA: Massachusetts Boston: Dorchester C. W. Swan 1884-8-9
NEBC: 00135674 Carex acutiformis Ehrhart USA: Massachusetts Boston: Dorchester, Savin Hill, Old Colony R... C. W. Swan 1884-7-9
NEBC: 00222098 Carex cephalophora Muhlenberg USA: Massachusetts Brookline: C. W. Swan 1884-6-21
NEBC: 00726107 Carex muehlenbergii Schkuhr ex Willdenow USA: Massachusetts Boston: Boston, Back Bay Park C. W. Swan 1884-6-23
NEBC: 01042739 Cyperus erythrorhizos Muhlenberg USA: Massachusetts Lawrence: Lawrence C. W. Swan 1884-9-18
GH: 01048036 Eleocharis engelmannii detonsa A. Gray USA: Massachusetts Winchester: Winchester, Winter Pond C. W. Swan 1884-9-1
NEBC: 00638685 Scirpus hallii A. Gray USA: Massachusetts Winchester: Winchester, Winter Pond C. W. Swan 1884-8-27
Dysphaniaceae NEBC: 00732264 Dysphania anthelminticum (Linnaeus) Mosyakin & Clemants USA: Massachusetts Lowell: Lowell C. W. Swan 1884-9-11
Ericaceae NEBC: 00517828 Epigaea repens Linnaeus USA: Massachusetts Townsend: W. [West] Townsend C. W. Swan 1884-5-3
NEBC: 00517830 Epigaea repens Linnaeus USA: Massachusetts Townsend: W. [West] Townsend C. W. Swan 1884-5-3
Euphorbiaceae NEBC: 00563010 Chamaesyce nutans (Lagasca) Small USA: Massachusetts Dracut: Dracut C. W. Swan 1884-8-6
Fabaceae NEBC: 00654320 Coronilla Linnaeus USA: Massachusetts Westford: Westford, Woollen-MIlls, Granitevi... C. W. Swan 1884-9-15
NEBC: 00711155 Desmodium marilandicum (Linnaeus) de Candolle USA: Massachusetts Concord: Concord C. W. Swan 1884-8-28
NEBC: 00711230 Desmodium obtusum (Muhlenberg ex Willdenow) de Candolle USA: Massachusetts Concord: Concord C. W. Swan 1884-8-23
NEBC: 00711237 Desmodium obtusum (Muhlenberg ex Willdenow) de Candolle USA: Massachusetts Tewksbury: Tewksbury C. W. Swan 1884-8-16
NEBC: 00639186 Desmodium rotundifolium (Michaux) de Candolle USA: Massachusetts Chelmsford: Chelmsford C. W. Swan 1884-9-8
NEBC: 00643137 Lathyrus sativus Linnaeus USA: Massachusetts Dracut: Dracut (Lowell) C. W. Swan 1884-8-4
NEBC: 00534246 Medicago arabica (Linnaeus) Hudson USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-6
NEBC: 00735807 Medicago laciniata (Linnaeus) Miller USA: Massachusetts Dracut: Dracut (Lowell) dump C. W. Swan 1884-8-6
NEBC: 00285893 Medicago monantha (C. A. Meyer) Trautvetter USA: Massachusetts Dracut: Dracut (Lowell) dump C. W. Swan 1884
NEBC: 00643490 Pisum sativum Linnaeus USA: Massachusetts Dracut: Dracut C. W. Swan 1884-8-4
NEBC: 00643491 Pisum sativum Linnaeus USA: Massachusetts Dracut: Dracut C. W. Swan 1884-8-6
NEBC: 00643492 Pisum sativum Linnaeus USA: Massachusetts Dracut: Lowell (Dracut dump) C. W. Swan 1884-8-6
NEBC: 00643495 Trifolium dalmaticum Visiani USA: Massachusetts Dracut: Dump, Dracut (Lowell) C. W. Swan 1884-8-6
NEBC: 00586669 Trifolium hybridum Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1884-9-16
NEBC: 00285893 Trigonella cassia Boissier USA: Massachusetts Dracut: Dracut (Lowell) dump C. W. Swan 1884
NEBC: 00285893 Trigonella noeana Boissier USA: Massachusetts Dracut: Dracut (Lowell) dump C. W. Swan 1884
NEBC: 00285893 Trigonella phrygia Boiss. & Balansa USA: Massachusetts Dracut: Dracut (Lowell) dump C. W. Swan 1884
NEBC: 00591723 Vicia hirsuta (Linnaeus) Gray USA: Massachusetts Dracut: Dracut dump, Lowell C. W. Swan 1884-8-6
NEBC: 00591887 Vicia sativa nigra (Linnaeus) Ehrhart USA: Massachusetts Dracut: Dracut C. W. Swan 1884-8-6
NEBC: 00761010 Vicia tetrasperma (Linnaeus) Schreber USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-6
Geraniaceae NEBC: 00679923 Erodium botrys (Cavanilles) Bertoloni USA: Massachusetts Westford: Westford, Woollen MIlls, Granitevi... C. W. Swan 1884-9-15
NEBC: 00761071 Erodium cicutarium (Linnaeus) L'Heritier ex Aiton USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-4
NEBC: 00679956 Geranium dissectum Linnaeus USA: Massachusetts Dracut: Dracut dump, Lowell C. W. Swan 1884-8-4
Haloragaceae NEBC: 01067106 Myriophyllum humile (Rafinesque) Morong USA: Massachusetts Bedford: Bedford, Concord R. [River] C. W. Swan 1884-8-28
Juncaceae NEBC: 01174022 Juncus articulatus Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-4
NEBC: 00860030 Juncus filiformis Linnaeus USA: Vermont Stowe: Stowe, Mt. Mansfield C. W. Swan 1884-7-24
NEBC: 01150276 Juncus tenuis Willdenow USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-4
Lamiaceae NEBC: 00749155 Marrubium vulgare Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-4
NEBC: 00691644 Satureja hortensis Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1884-7-4
Linaceae NEBC: 00741246 Linum medium texanum (Planchon) Fernald USA: Massachusetts Boston: West Boston C. W. Swan 1884-7-15
GH: 00761208 Linum usitatissimum Linnaeus USA: Massachusetts Boston: Dorchester, Savin Hill C. W. Swan 1884-7-9
NEBC: 00761210 Linum usitatissimum Linnaeus USA: Massachusetts Boston: Dorchester, Savin Hill C. W. Swan 1884-7-9
Lycopodiaceae NEBC: 00743544 Dendrolycopodium obscurum (Linnaeus) A. Haines USA: Massachusetts Pelham: Pelham C. W. Swan 1884-8-1
NEBC: 00661358 Huperzia lucidula (Michaux) Trevisan USA: Vermont Stowe: Stowe C. W. Swan 1884-7-28
Malvaceae NEBC: 00679306 Sida spinosa Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1884-9-11
Onagraceae NEBC: 00816283 Oenothera parviflora Linnaeus USA: Massachusetts Chelmsford: Chelmsford C. W. Swan 1884-8-7
NEBC: 00816284 Oenothera parviflora Linnaeus USA: Massachusetts Chelmsford: Chelmsford C. W. Swan 1884-8-7
Orchidaceae NEBC: 01056294 Platanthera orbiculata (Pursh) Lindley USA: Vermont Stowe: Stowe, Bingham's Falls C. W. Swan 1884-7-29
Orobanchaceae NEBC: 00375680 Aphyllon uniflorum (Linnaeus) A. Gray USA: Massachusetts Milton: Blue Hill [Blue Hills Reservation] C. W. Swan 1884-5-30
NEBC: 00375680 Orobanche uniflora Linnaeus USA: Massachusetts Milton: Blue Hill [Blue Hills Reservation] C. W. Swan 1884-5-30
Plantaginaceae NEBC: 00655193 Cymbalaria muralis G. Gaertner USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-4
NEBC: 00707131 Veronica americana Schweinitz ex Bentham USA: Massachusetts Westford: Westford, near Woollen-mills C. W. Swan 1884-9-15
NEBC: 00375651 Veronica peregrina Linnaeus USA: Massachusetts Milton: Blue Hill [Blue Hills Reservation] C. W. Swan 1884-5-30
NEBC: 00375651 Veronica peregrina xalapensis (Kunth) Pennell USA: Massachusetts Milton: Blue Hill [Blue Hills Reservation] C. W. Swan 1884-5-30
Poaceae NEBC: 01178332 Agrostis mertensii Trinius USA: Vermont Mount Mansfield C. W. Swan 1884-7-24
NEBC: 00594293 Eleusine indica (Linnaeus) Gaertner USA: Massachusetts Dracut: Lowell (Dracut dump) C. W. Swan 1884-8-6
NEBC: 00733323 Hordeum murinum Linnaeus USA: Massachusetts Lowell: Lowell, Dracut dump C. W. Swan 1884-8-6
NEBC: 00583086 Lolium multiflorum Lamarck USA: Massachusetts Lowell: Lowell (Dracut dump) C. W. Swan 1884-8-6
NEBC: 00864726 Muhlenbergia glomerata (Willdenow) Trinius USA: Massachusetts Bedford: Bedford C. W. Swan 1884-8-28
NEBC: 00864727 Muhlenbergia glomerata (Willdenow) Trinius USA: Massachusetts Bedford: Bedford C. W. Swan 1884-8-28
ECON: 00583205 Panicum miliaceum Linnaeus USA: Massachusetts Dracut: Dracut C. W. Swan 1884-8-4
NEBC: 00583212 Panicum miliaceum Linnaeus USA: Massachusetts Dracut: Dracut C. W. Swan 1884-8-4
NEBC: 00614276 Setaria viridis (Linnaeus) P. Beauvois USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-6
NEBC: 00614277 Setaria viridis (Linnaeus) P. Beauvois USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-6
NEBC: 00879471 Sporobolus vaginiflorus (Torrey) Alph. Wood USA: Massachusetts Bedford: Bedford C. W. Swan 1884-8-24
NEBC: 00879472 Sporobolus vaginiflorus (Torrey) Alph. Wood USA: Massachusetts Bedford: Bedford C. W. Swan 1884-8-24
Potamogetonaceae NEBC: 00816877 Potamogeton bicupulatus Fernald USA: Massachusetts Bedford: Bedford C. W. Swan 1884-8-24
NEBC: 01009241 Potamogeton epihydrus Rafinesque USA: Massachusetts Bedford: Bedford C. W. Swan 1884-8-28
Salicaceae NEBC: 00710372 Salix bebbiana Sargent USA: Massachusetts Boston: Boston C. W. Swan 1884-5-15
NEBC: 00936155 Salix bebbiana Sargent USA: Massachusetts Boston: Boston C. W. Swan 1884-5-24
NEBC: 00756703 Salix discolor Muhlenberg USA: Massachusetts Brookline: Brookline, Longwood C. W. Swan 1884-5-17
NEBC: 00763069 Salix eriocephala Michaux USA: Massachusetts Lowell: Lowell C. W. Swan 1884-5-19
NEBC: 00769112 Salix eriocephala Michaux USA: Massachusetts Boston: Boston C. W. Swan 1884-5-15
NEBC: 00769969 Salix nigra Marshall USA: Massachusetts Boston: Boston C. W. Swan 1884-6-13
Solanaceae NEBC: 00685602 Physalis pubescens Linnaeus USA: Massachusetts Lowell: Lowell C. W. Swan 1884-9-11
Ulmaceae NEBC: 00702742 Celtis occidentalis Linnaeus USA: Massachusetts Boston: Dorchester,near Savin Hill C. W. Swan 1884-8-9
Verbenaceae NEBC: 00610009 Verbena bracteata Lagasca & Rodriguez USA: Massachusetts Lowell: Lowell C. W. Swan 1884-8-6
