Apocynaceae GH: 02179776 Apocynum cannabinum Linnaeus USA: District of Columbia Washington: Takoma. South P. Dowell 8167 1904-7-23
Asteraceae GH: 01924510 Ageratina altissima (Linnaeus) R. M. King & H. Robinson USA: New York Staten Island: Clove Lake P. Dowell 3417 1904-9-17
GH: 01003623 Artemisia annua Linnaeus USA: Virginia near Alexandria P. Dowell 3309 1904-8-28
GH: 02142152 Chondrilla juncea Linnaeus USA: Virginia [data not captured] P. Dowell 13076 1904-8-7
GH: 02216158 Chrysopsis mariana (Linnaeus) Elliott USA: Maryland [data not captured] P. Dowell 3177 1904-8-13
GH: 02142234 Cichorium intybus Linnaeus USA: New York Staten Island: [data not captured] P. Dowell 13117 1904-9-10
GH: 02352944 Erigeron pulchellus Michaux USA: New York Staten Island: [data not captured] P. Dowell 2889 1904
GH: 02188804 Eupatorium album Linnaeus USA: Maryland Hyattsville P. Dowell 3185 1904-8-13
GH: 02190254 Eupatorium rotundifolium Linnaeus USA: Maryland Hyattsville P. Dowell 3184 1904-8-13
GH: 02190300 Eupatorium rotundifolium Linnaeus USA: New York Staten Island: Pleasant Plains P. Dowell 3530 1904-10-2
GH: 02190767 Eupatorium sessilifolium Linnaeus USA: Maryland Cabin John P. Dowell 3228 1904-8-21
GH: 02190836 Eupatorium sessilifolium Linnaeus USA: Virginia Above Chain Bridge P. Dowell 3069 1904-8-6
GH: 02191399 Eutrochium purpureum (Linnaeus) E. E. Lamont USA: New York Staten Island: South Beach P. Dowell 3384 1904-9-11
GH: 02587599 Grindelia squarrosa (Pursh) Dunal USA: Virginia [data not captured] P. Dowell 13251 1904-7-31
GH: 01832574 Hieracium paniculatum Linnaeus USA: New York Staten Island: [data not captured] P. Dowell 13321 1904-9-25
GH: 01834847 Lactuca sativa Linnaeus USA: Virginia [data not captured] P. Dowell 13373, 3313 1904-8-28
GH: 01924130 Vernonia noveboracensis (Linnaeus) Michaux USA: New York Staten Island: Old Quarry Road, Mariner Harb... P. Dowell 2986 1904-9-10
Brassicaceae GH: 01693225 Rorippa sylvestris (Linnaeus) Besser USA: New York Staten Island: Foot of Bard Ave P. Dowell 2873 1904-6-1
Caryophyllaceae GH: 01744070 Cerastium nutans Rafinesque USA: New York Staten Island: Bloodroot Valley P. Dowell 2861 1904-5-21
Chenopodiaceae GH: 01783801 Salsola kali Linnaeus USA: Maryland [data not captured] P. Dowell 3276 1904-8-27
Convolvulaceae GH: 02055506 Calystegia silvatica fraterniflora (Mack. & Bush) Brummitt USA: Virginia Hunting Creek, bear Alexandria P. Dowell 3336 1904-8-28
GH: 02056584 Cuscuta gronovii Willdenow ex Roemer & Schultes USA: New York Staten Island: South Beach P. Dowell 3392 1904-9-11
Cyperaceae GH: 01773921 Carex bullata Schkuhr ex Willdenow USA: New Jersey [data not captured] P. Dowell 3643 1904-5-28
Ericaceae GH: 01718320 Lyonia mariana (Linnaeus) D. Don USA: New Jersey [data not captured] P. Dowell 3668 1904-5-30
GH: 01683745 Pyrola americana Sweet USA: Maryland [data not captured] P. Dowell 3244 1904-8-21
Fabaceae GH: 01961934 Desmodium paniculatum (Linnaeus) de Candolle USA: New York Staten Island: Port Richmond, Palmer Run P. Dowell 3416 1904-9-15
GH: 02150771 Lespedeza capitata Michaux USA: Maryland Chesapeake Beach P. Dowell 3278 1904-8-27
GH: 02087112 Lespedeza hirta (Linnaeus) Hornemann USA: Maryland Forest Glen P. Dowell 3343 1904-9-4
GH: 02087791 Lespedeza violacea (Linnaeus) Persoon USA: Maryland Forest Glen P. Dowell 3344 1904-9-4
GH: 02133320 Phaseolus polystachius Michaux USA: Maryland [data not captured] P. Dowell 3238 1904-8-21
GH: 02133333 Phaseolus polystachius Michaux USA: New York Staten Island: [data not captured] P. Dowell 3549 1904-10-8
GH: 02135062 Robinia pseudoacacia Linnaeus USA: New York Staten Island: [data not captured] P. Dowell 2879 1904-6-5
GH: 02342420 Trifolium campestre Schreber USA: New Jersey [data not captured] P. Dowell 3666 1904-5-30
Gentianaceae GH: 02069353 Bartonia virginica (Linnaeus) Britton, Stearn & Poggenburg USA: New York Palmer River, Port Richmond P. Dowell 3410 1904-9-15
Juncaceae GH: 02102816 Juncus effusus solutus (Fernald & Wiegand) Hämet-Ahti USA: New York Staten Island: [data not captured] P. Dowell 3273 1904-6-25
Lamiaceae GH: 01580979 Agastache nepetoides (Linnaeus) Kuntze USA: Virginia Four Mile Run P. Dowell 8402 1904-8-9
GH: 01580980 Agastache nepetoides (Linnaeus) Kuntze USA: Virginia Above Chain Bridge P. Dowell 8399 1904-8-6
GH: 01552036 Leonurus cardiaca Linnaeus USA: New York Near Forest Road, Dongan Hills. Staten Islan... P. Dowell 2906 1904-6-19
GH: 01552970 Lycopus virginicus Linnaeus USA: Maryland Forest Glen P. Dowell 3341 1904-9-4
GH: 01552988 Lycopus virginicus Linnaeus USA: New York Staten Island: Old Quarry Road, Mariner Harb... P. Dowell 2971 1904-9-10
GH: 01596447 Pycnanthemum virginianum (Linnaeus) B. L. Robinson & Fernald USA: Virginia Hunting Cr., near Alexandria P. Dowell 3323 1904-8-28
Lentibulariaceae GH: 01975651 Utricularia macrorhiza LeConte USA: New York Grant City. P. Dowell 3371 1904-9-22
GH: 01975651 Utricularia vulgaris Linnaeus USA: New York Grant City. P. Dowell 3371 1904-9-22
Lobeliaceae GH: 01797593 Lobelia cardinalis Linnaeus USA: New York Staten Island: Old Quarry Road, Mariner Harb... P. Dowell 2965 1904-9-10
GH: 01799166 Lobelia spicata Lamarck USA: Maryland Cabin John P. Dowell 3236 1904-8-21
Malvaceae GH: 02201555 Kosteletzkya pentacarpos (Linnaeus) Ledebour USA: Maryland Chesapeake Beach P. Dowell 3301 1904-8-27
GH: 02200774 Sida spinosa Linnaeus USA: Maryland Cabin John P. Dowell 3223 1904-8-21
Onagraceae GH: 01671476 Epilobium coloratum Biehler USA: New York South Ave. Staten Island P. Dowell 3441 1904-9-18
Orchidaceae AMES: 01883921 Aplectrum hyemale (Muhlenberg ex Willdenow) Torrey USA: Maryland Cabin John P. Dowell 3249 1904-8-21
AMES: 02031332 Arethusa bulbosa Linnaeus USA: New Jersey Lakehurst P. Dowell 3665 1904-5-30
AMES: 01938555 Corallorhiza odontorhiza (Willdenow) Poiret USA: Maryland Cabin John P. Dowell 3246 1904-8-21
AMES: 01937490 Cypripedium acaule Aiton USA: New Jersey Lakehurst P. Dowell 3664 1904-5-29
AMES: 02028120 Goodyera pubescens (Willdenow) R. Brown USA: Maryland Cabin John P. Dowell 3245 1904-8-21
AMES: 02028953 Liparis liliifolia (Linnaeus) Richard ex Lindley USA: District of Columbia Cleveland Park P. Dowell 3023 1904-7-29
AMES: 02029153 Liparis loeselii (Linnaeus) Richard USA: New York Staten Island, Arlington Sta.-West-Along RR P. Dowell 3433 1904-8-17
AMES: 02028852 Malaxis unifolia Michaux USA: Maryland Cabin John P. Dowell 3247 1904-8-21
AMES: 02066322 Platanthera blephariglottis (Willdenow) Lindley USA: Maryland Hyattsville P. Dowell 3175 1904-8-13
AMES: 02066863 Platanthera clavellata (Michaux) Luer USA: Maryland Takoma P. Dowell 3009 1904-7-23
AMES: 02045098 Platanthera flava (Linnaeus) Lindley USA: Virginia Hunting Cr., near Alexandria P. Dowell 3112 1904-8-7
AMES: 02045900 Platanthera lacera (Michaux) G. Don USA: District of Columbia Takoma P. Dowell 3004 1904-7-3
AMES: 02032068 Spiranthes cernua (Linnaeus) Richard USA: New Jersey Roselle P. Dowell 3472 1904-9-24
AMES: 02032622 Spiranthes tuberosa Rafinesque USA: Maryland Hyattsville P. Dowell 3191 1904-8-17
AMES: 02029272 Tipularia discolor (Pursh) Nuttall USA: Maryland Cabin John P. Dowell 3248 1904-8-21
Orobanchaceae GH: 02035587 Agalinis decemloba (Greene) Pennell USA: Maryland Forest Glen P. Dowell 3353 1904-9-4
GH: 02034168 Agalinis paupercula (A. Gray) Britton USA: New York Staten Island: South Ave. P. Dowell 3432 1904-9-17
GH: 01880388 Epifagus virginiana (Linnaeus) W. P. C. Barton USA: Maryland Forest Glen P. Dowell 3361 1904-9-4
Oxalidaceae GH: 01856110 Oxalis stricta Linnaeus USA: Virginia Above Chain Bridge P. Dowell 3061 1904-8-6
Papaveraceae GH: 01857942 Sanguinaria canadensis Linnaeus USA: New York Staten Island: Bloodroot Valley P. Dowell 2830 1904-4-22
Phrymaceae GH: 01843464 Phryma leptostachya Linnaeus USA: Virginia Four Mile Run P. Dowell 3136 1904-8-9
Plantaginaceae GH: 01999757 Gratiola pilosa Michaux USA: District of Columbia [data not captured] P. Dowell 3054 1904-8-3
GH: 02000625 Kickxia elatine (Linnaeus) Dumortier USA: Maryland [data not captured] P. Dowell 8778 1904-8-17
GH: 01802881 Plantago major Linnaeus USA: New York Staten Island: [data not captured] P. Dowell 8985 1904-9-10
GH: 01802879 Plantago major Linnaeus USA: New York Staten Island: [data not captured] P. Dowell 8987 1904-9-10
GH: 01803963 Plantago rugelii Decaisne USA: New York Staten Island: [data not captured] P. Dowell 3595 1904-10-30
GH: 01804184 Plantago virginica Linnaeus USA: New Jersey [data not captured] P. Dowell 3629 1904-5-28
GH: 01805485 Veronica arvensis Linnaeus USA: New York [data not captured] P. Dowell 8866 1904-5-14
GH: 01811557 Veronica scutellata Linnaeus USA: New York Staten Island: [data not captured] P. Dowell 8890 1904-9-10
Polygalaceae GH: 01969371 Polygala mariana Miller USA: Maryland Hyattsville P. Dowell 6737 1904-8-13
GH: 01969565 Polygala nuttallii Torr. & A. Gray USA: Maryland Hyattsville P. Dowell 3158 1904-8-13
GH: 01968142 Polygala sanguinea Linnaeus USA: Maryland Hyattsville P. Dowell 3161 1904-8-13
GH: 01968235 Polygala sanguinea Linnaeus USA: Virginia Four Mile Run P. Dowell 6757 1904-8-9
GH: 01968612 Polygala verticillata Linnaeus USA: Virginia Four Mile Run P. Dowell 3120 1904-8-9
Pontederiaceae GH: 01919307 Heteranthera reniformis Ruiz & Pavon USA: Virginia Hunting Cr., near Alexandria P. Dowell 3316 1904-8-28
Primulaceae GH: 01920595 Lysimachia arvensis (Linnaeus) U. Manns & Anderberg USA: Virginia New Alexandria P. Dowell 3093 1904-8-7
Ranunculaceae GH: 01720778 Actaea pachypoda Elliott USA: New York Staten Island: Bloodroot Valley P. Dowell 2863 1904-5-21
Rosaceae GH: 00971394 Aruncus dioicus (Walter) Fernald USA: Maryland Cabin John P. Dowell 3242 1904-8-21
Rubiaceae GH: 02138426 Galium mollugo Linnaeus USA: New Jersey [data not captured] P. Dowell 3471, 9039 1904-9-24
GH: 02140476 Galium triflorum Michaux USA: Virginia [data not captured] P. Dowell 11650 1904-8-9
GH: 02358402 Hexasepalum teres (Walter) J. H. Kirkbride USA: Virginia [data not captured] P. Dowell 8999 1904-8-7
Saxifragaceae GH: 01712741 Micranthes virginiensis (Michaux) Small USA: New York Staten Island: Bloodroot Valley P. Dowell 2834 1904-5-1
Scrophulariaceae GH: 01843254 Mimulus ringens Linnaeus USA: Virginia Hunting Cr., near Alexandria P. Dowell 3104 1904-8-7
Solanaceae GH: 01543198 Solanum emulans Rafinesque USA: Maryland Forest Glen P. Dowell 3340 1904-9-4
Violaceae GH: 02147121 Viola labradorica Schrank USA: New York Staten Island: New Springville P. Dowell 3597 1904-10-30
