Aceraceae NEBC: 00677109 Acer rubrum Linnaeus USA: Massachusetts Malden: Malden R. Frohock
Amaranthaceae NEBC: 00614961 Amaranthus hybridus Linnaeus USA: Massachusetts Medford: Medford R. Frohock 1880-8-21
NEBC: 00598404 Amaranthus retroflexus Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-8-21
Anacardiaceae NEBC: 00690906 Rhus glabra Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00415057 Rhus typhina Linnaeus USA: Massachusetts Fells [Middlesex Fells Reservation] R. Frohock 1880-6
Apiaceae NEBC: 01050867 Cicuta maculata Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 01009679 Sium suave Walter USA: Massachusetts Malden: Malden R. Frohock 1880
Araceae NEBC: 01081997 Calla palustris Linnaeus USA: Massachusetts Malden: Malden R. Frohock
NEBC: 00339819 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Malden: R. Frohock
Araliaceae GH: 00816825 Aralia hispida Ventenat USA: Massachusetts Locks Village R. Frohock 1911-7-14
Asclepiadaceae NEBC: 01035870 Asclepias quadrifolia Jacquin USA: Massachusetts Malden: Malden R. Frohock 1880-6
Asparagaceae NEBC: 00567457 Asparagus officinalis Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
Asteraceae NEBC: 00566956 Achillea millefolium Linnaeus USA: Massachusetts Malden: Malden R. Frohock
NEBC: 01037258 Ambrosia artemisiifolia Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 01023037 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00531410 Anthemis cotula Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00587194 Arctium minus (Hill) Bernhardi USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00531887 Artemisia vulgaris Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 01037357 Bidens cernua Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 01037547 Bidens connata Muhlenberg ex Willdenow USA: Massachusetts Winchester: Winchester R. Frohock 1880-9-19
NEBC: 01037815 Bidens frondosa Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00531056 Centaurea nigra Linnaeus USA: Massachusetts Medford: Medford R. Frohock 1880-8-21
NEBC: 00587981 Cichorium intybus Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-7-7
NEBC: 00580983 Cirsium arvense (Linnaeus) Scopoli USA: Massachusetts Medford: Medford R. Frohock 1880
NEBC: 01067221 Cirsium pumilum (Nuttall) Sprengel USA: Massachusetts Malden: Malden, Pine Banks [Park] R. Frohock 1880
NEBC: 01067222 Cirsium pumilum (Nuttall) Sprengel USA: Massachusetts Medford: Medford R. Frohock 1880
NEBC: 00295893 Gnaphalium uliginosum Linnaeus USA: Massachusetts Winchester: R. Frohock 1880-9-19
NEBC: 01037982 Helianthus divaricatus Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 01017065 Helianthus strumosus Linnaeus USA: Massachusetts Malden: Malden, Bell Rock R. Frohock 1880
NEBC: 01070029 Lactuca biennis (Moench) Fernald USA: Massachusetts Malden: Malden R. Frohock
NEBC: 00684782 Liatris scariosa novae-angliae Lunell USA: Massachusetts Reading: Reading R. Frohock 1880-8-15
NEBC: 00568787 Packera aurea (Linnaeus) A. Löve & D. Löve USA: Massachusetts Melrose: Melrose, Swain's Pond R. Frohock 1880
NEBC: 00637050 Rudbeckia hirta pulcherrima Farwell USA: Massachusetts Malden: Malden, Lynde farm R. Frohock 1880
NEBC: 00637051 Rudbeckia hirta pulcherrima Farwell USA: Massachusetts Malden: Malden R. Frohock 1880
Balsaminaceae NEBC: 00484232 Impatiens capensis Meerburgh USA: Massachusetts Malden: Malden R. Frohock 1880-9-12
Betulaceae NEBC: 00354750 Betula alba populifolia (Marshall) Spach USA: Massachusetts Middlesex Fells [Reservation] R. Frohock
NEBC: 00354750 Betula populifolia Marshall USA: Massachusetts Middlesex Fells [Reservation] R. Frohock
Blechnaceae NEBC: 00628254 Woodwardia areolata (Linnaeus) T. Moore USA: Massachusetts Malden: Malden R. Frohock
Boraginaceae GH: 00655289 Echium vulgare Linnaeus USA: Massachusetts Somerville: Somerville R. Frohock
Brassicaceae NEBC: 00617026 Brassica nigra (Linnaeus) W. D. J. Koch USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00606936 Hesperis matronalis Linnaeus USA: Massachusetts Malden: Malden R. Frohock
NEBC: 00675328 Rorippa palustris (Linnaeus) Besser USA: Massachusetts Malden: Malden R. Frohock 1880
Caprifoliaceae NEBC: 00633464 Lonicera sempervirens Linnaeus USA: Massachusetts Malden: Malden R. Frohock
NEBC: 00721765 Sambucus nigra canadensis (L.) R. Bolli USA: Massachusetts Medford: Medford R. Frohock 1880
NEBC: 00680251 Triosteum aurantiacum E. P. Bicknell USA: Massachusetts Medford: Medford R. Frohock
NEBC: 00680252 Triosteum aurantiacum E. P. Bicknell USA: Massachusetts Medford: Medford R. Frohock 1880-8-21
Caryophyllaceae NEBC: 00564765 Cerastium fontanum vulgare (Hartman) Greuter & Burdet USA: Massachusetts Malden: Malden, Edgeworth R. Frohock 1880-6
Chenopodiaceae NEBC: 00561591 Chenopodium album Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00732397 Salsola kali pontica (Pallas) Mosyakin USA: Massachusetts Malden: Malden, Bell Rock R. Frohock 1880-8
Clethraceae NEBC: 00866991 Clethra alnifolia Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
Commelinaceae NEBC: 00757736 Lechea mucronata (do not use) Rafinesque USA: Massachusetts Melrose: Melrose, Pine Banks R. Frohock 1880
Convolvulaceae NEBC: 00655727 Calystegia sepium americana (Sims) Brummitt USA: Massachusetts Malden: Malden, Pine Bank [Park] R. Frohock 1880
Crassulaceae NEBC: 00591453 Sedum telephium Linnaeus USA: Massachusetts Melrose: Melrose, Wyoming R. Frohock 1880
Cyperaceae NEBC: 01182837 Bulbostylis capillaris (Linnaeus) Kunth ex C. B. Clarke USA: Massachusetts Malden: Malden, Pine Banks [Park] R. Frohock 1880
NEBC: 00241174 Carex folliculata Linnaeus USA: Massachusetts Malden: R. Frohock 1880
NEBC: 00245718 Carex gracillima Schweinitz USA: Massachusetts Malden: R. Frohock 1880
NEBC: 00874784 Carex vestita Willdenow USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 01043804 Cyperus diandrus Torrey USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 01048133 Cyperus strigosus Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00892991 Eleocharis acicularis (Linnaeus) Roemer & Schultes USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00770928 Eleocharis elliptica Kunth USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00717644 Eleocharis obtusa (Willdenow) Schultes USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 01060678 Eriophorum tenellum Nuttall USA: Massachusetts Malden: Malden R. Frohock 1879-6-6
NEBC: 00766820 Eriophorum vaginatum Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1879-6-6
NEBC: 01061100 Eriophorum virginicum Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1879
Ericaceae NEBC: 00484707 Kalmia angustifolia Linnaeus USA: Massachusetts Malden: Malden R. Frohock
NEBC: 00553784 Monotropa uniflora Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-8-7
NEBC: 00770490 Rhododendron viscosum (Linnaeus) Torrey USA: Massachusetts Malden: Malden R. Frohock 1880-6-14
Eriocaulaceae NEBC: 00855293 Eriocaulon aquaticum (Hill) Druce USA: Massachusetts Winchester: Winchester R. Frohock 1880-9-19
Euphorbiaceae NEBC: 00578098 Euphorbia cyparissias Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
Fabaceae NEBC: 00562309 Amphicarpaea bracteata (Linnaeus) Fernald USA: Massachusetts Reading: Reading R. Frohock 1880-8-17
NEBC: 00747949 Desmodium canadense (Linnaeus) de Candolle USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00711335 Desmodium paniculatum (Linnaeus) de Candolle USA: Massachusetts Malden: Malden R. Frohock 1880-8-21
NEBC: 00639196 Desmodium rotundifolium (Michaux) de Candolle USA: Massachusetts Medford: Medford R. Frohock 1880-8-21
NEBC: 00564175 Lespedeza frutescens (Linnaeus) Hornemann USA: Massachusetts Medford: Medford R. Frohock 1880
NEBC: 00639874 Lespedeza virginica (Linnaeus) Britton USA: Massachusetts Medford: Medford R. Frohock 1880
NEBC: 00534331 Medicago lupulina Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00501595 Trifolium arvense Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-7
NEBC: 00504801 Trifolium pratense Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00586889 Trifolium repens Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-8
Gentianaceae NEBC: 00726765 Gentianopsis crinita (Froelich) Ma USA: Massachusetts Malden: Malden, Lynde meadow R. Frohock 1880-9-12
Geraniaceae NEBC: 01070510 Geranium robertianum Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-6
Hypoxidaceae NEBC: 00485855 Hypoxis hirsuta (Linnaeus) Coville USA: Massachusetts Malden: Malden R. Frohock 1880
Iridaceae NEBC: 00463383 Iris prismatica Pursh USA: Massachusetts Concord: Concord R. Frohock 1880-6-17
NEBC: 01044432 Iris versicolor Linnaeus USA: Massachusetts Concord: Concord R. Frohock 1880-6-17
NEBC: 01160032 Sisyrinchium angustifolium Miller USA: Massachusetts Medford: Medford R. Frohock 1880-7-1
Lamiaceae NEBC: 00685126 Galeopsis bifida Boenninghausen USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00505838 Hedeoma pulegioides (Linnaeus) Persoon USA: Massachusetts Medford: Medford R. Frohock 1880-8-21
NEBC: 00658491 Lycopus americanus Muhlenberg ex W. P. C. Barton USA: Massachusetts Medford: Medford R. Frohock 1880-8-21
NEBC: 00658949 Lycopus virginicus Linnaeus USA: Massachusetts Medford: Medford R. Frohock 1880-8-21
NEBC: 00759349 Mentha arvensis Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00591287 Nepeta cataria Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00591070 Prunella vulgaris Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00642203 Pycnanthemum incanum (Linnaeus) Michaux USA: Massachusetts Medford: Medford R. Frohock 1880-8-21
NEBC: 00648762 Pycnanthemum virginianum (Linnaeus) B. L. Robinson & Fernald USA: Massachusetts Melrose: Melrose, Wyoming R. Frohock 1880
Lauraceae NEBC: 00504971 Lindera benzoin (Linnaeus) Blume USA: Massachusetts Medford: Medford R. Frohock 1880-8-21
Lemnaceae NEBC: 00339864 Lemna minor Linnaeus USA: Massachusetts Malden: R. Frohock 1880-9
NEBC: 00339864 Spirodela polyrhiza (Linnaeus) Schleiden USA: Massachusetts Malden: R. Frohock 1880-9
Lentibulariaceae NEBC: 00664647 Utricularia vulgaris macrorhiza (L. LeConte) R. T. Clausen USA: Massachusetts Reading: Reading R. Frohock 1880-8-15
Liliaceae NEBC: 00673354 Lilium canadense Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
Lycopodiaceae NEBC: 00738308 Dendrolycopodium obscurum (Linnaeus) A. Haines USA: Massachusetts Reading: Reading R. Frohock 1880-9-5
NEBC: 00661421 Huperzia lucidula (Michaux) Trevisan USA: Massachusetts Reading: Reading R. Frohock 1880-9-5
Malvaceae NEBC: 00761512 Malva moschata Linnaeus USA: Massachusetts Malden: Malden, Oak Grove R. Frohock 1880
Myricaceae NEBC: 00666744 Comptonia peregrina (Linnaeus) J. M. Coulter USA: Massachusetts Malden: Malden R. Frohock 1880
Nymphaeaceae NEBC: 01014122 Nuphar variegata Engelmann ex Durand USA: Massachusetts Melrose: Melrose, Pine Banks R. Frohock 1880
Oleaceae NEBC: 00593786 Fraxinus americana Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
Onagraceae NEBC: 01057720 Epilobium leptophyllum Rafinesque USA: Massachusetts Malden: Malden R. Frohock 1880-8-21
Ophioglossaceae GH: 00639315 Botrychium multifidum (S. G. Gmelin) Ruprecht USA: Massachusetts North Adams: North Adams R. Frohock 1878
NEBC: 00679208 Ophioglossum pusillum Rafinesque USA: Massachusetts Malden: Malden R. Frohock 1881-6-27
Orchidaceae NEBC: 00354346 Corallorhiza maculata (Rafinesque) Rafinesque USA: Massachusetts Pine Banks [Park, Malden/Melrose] R. Frohock 1880-8-15
NEBC: 00354346 Corallorhiza multiflora Nuttall USA: Massachusetts Pine Banks [Park, Malden/Melrose] R. Frohock 1880-8-15
NEBC: 01021178 Goodyera pubescens (Willdenow) R. Brown USA: Massachusetts Malden: Malden, Pine Banks [Park] R. Frohock 1880-8
NEBC: 01021690 Goodyera tesselata Loddiges USA: Massachusetts Reading: Reading R. Frohock 1880-8-15
NEBC: 01062783 Platanthera flava herbiola (R. Brown) Luer USA: Massachusetts Concord: Concord R. Frohock 1880-6-17
NEBC: 00462690 Platanthera lacera (Michaux) G. Don USA: Massachusetts Malden: Malden R. Frohock 1881-6-27
NEBC: 01056516 Spiranthes cernua (Linnaeus) Richard USA: Massachusetts Reading: Reading R. Frohock 1880
NEBC: 01063645 Spiranthes lacera gracilis (Bigelow) Luer USA: Massachusetts Malden: Malden R. Frohock 1880-8-14
Orobanchaceae NEBC: 00502943 Aureolaria pedicularia (Linnaeus) Rafinesque USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00260799 Aureolaria villosa Rafinesque USA: Massachusetts Fells [Middlesex Fells Reservation] R. Frohock 1880-7-8
NEBC: 00260799 Aureolaria virginica (Linnaeus) Pennell USA: Massachusetts Fells [Middlesex Fells Reservation] R. Frohock 1880-7-8
NEBC: 00260799 Gerardia flava Linnaeus USA: Massachusetts Fells [Middlesex Fells Reservation] R. Frohock 1880-7-8
Oxalidaceae NEBC: 01013404 Oxalis stricta Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-6-14
Phytolaccaceae NEBC: 00755246 Phytolacca americana Linnaeus USA: Massachusetts Reading: Reading R. Frohock 1880-8-15
Plantaginaceae NEBC: 00745124 Callitriche heterophylla Pursh USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00736660 Chelone glabra Linnaeus USA: Massachusetts Reading: Reading R. Frohock 1880
NEBC: 00502291 Gratiola aurea Muhlenberg USA: Massachusetts Malden: Malden R. Frohock 1880-8-17
NEBC: 00582126 Plantago lanceolata Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-6-16
NEBC: 00670338 Plantago rugelii Decaisne USA: Massachusetts Malden: Malden R. Frohock 1880
Poaceae NEBC: 01175759 Agrostis scabra Willdenow USA: Massachusetts Malden: Malden R. Frohock 1879
NEBC: 01175760 Agrostis scabra Willdenow USA: Massachusetts Malden: Malden R. Frohock 1879
NEBC: 00835461 Alopecurus aequalis Sobolewsky USA: Massachusetts Medford: Medford R. Frohock 1880-8-22
NEBC: 01175856 Anthoxanthum nitens (Weber) Y. Schouten & J. F. Veldkamp USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00863139 Bromus kalmii A. Gray USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00609284 Dactylis glomerata Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1879
NEBC: 00338437 Danthonia compressa Austin USA: Massachusetts [Middlesex] Fells R. Frohock 1879
NEBC: 00338437 Danthonia spicata (Linnaeus) P. Beauvois ex Roemer & Schultes USA: Massachusetts [Middlesex] Fells R. Frohock 1879
NEBC: 00339217 Dichanthelium acuminatum implicatum (Scribner) Freckmann & Lelong USA: Massachusetts Fells [Middlesex Fells Reservation] R. Frohock 1879
NEBC: 00737622 Dichanthelium acuminatum implicatum (Scribner) Freckmann & Lelong USA: Massachusetts Malden: Malden R. Frohock
NEBC: 00705132 Dichanthelium dichotomum (Linnaeus) Gould USA: Massachusetts Malden: Malden R. Frohock 1879
NEBC: 01151115 Dichanthelium linearifolium (Scribner) Gould USA: Massachusetts Malden: Malden R. Frohock 1879
NEBC: 00338483 Elymus hystrix Linnaeus USA: Massachusetts [Middlesex] Fells R. Frohock 1880
NEBC: 00855718 Eragrostis capillaris (Linnaeus) Nees USA: Massachusetts Malden: Malden R. Frohock 1879
NEBC: 00864463 Eragrostis spectabilis (Pursh) Steudel USA: Massachusetts Reading: Reading R. Frohock 1880
NEBC: 00878724 Glyceria borealis (Nash) Batchelder USA: Massachusetts Malden: Malden R. Frohock 1879
NEBC: 01149379 Glyceria obtusa (Muhlenberg) Trinius USA: Massachusetts Malden: Malden R. Frohock 1879
NEBC: 01148219 Glyceria striata (Lamarck) Hitchcock USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00609890 Holcus lanatus Linnaeus USA: Massachusetts Concord: Concord R. Frohock 1880-6-17
NEBC: 00338483 Hystrix patula Moench USA: Massachusetts [Middlesex] Fells R. Frohock 1880
NEBC: 00863766 Leersia oryzoides (Linnaeus) Swartz USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00855766 Muhlenbergia mexicana (Linnaeus) Trinius USA: Massachusetts Malden: Malden R. Frohock 1879
NEBC: 01174092 Muhlenbergia uniflora (Muhlenberg) Fernald USA: Massachusetts Reading: Reading R. Frohock 1880
NEBC: 00339217 Panicum dichotomum Linnaeus USA: Massachusetts Fells [Middlesex Fells Reservation] R. Frohock 1879
NEBC: 00339217 Panicum huachucae Ashe USA: Massachusetts Fells [Middlesex Fells Reservation] R. Frohock 1879
NEBC: 00339217 Panicum implicatum Scribner USA: Massachusetts Fells [Middlesex Fells Reservation] R. Frohock 1879
NEBC: 00339217 Panicum lindheimeri implicatum (Scribner) Fernald USA: Massachusetts Fells [Middlesex Fells Reservation] R. Frohock 1879
NEBC: 00864109 Panicum rigidulum Bosc ex Nees USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00853502 Panicum virgatum spissum Linder USA: Massachusetts Malden: Malden R. Frohock 1879
NEBC: 00855637 Paspalum setaceum muehlenbergii (Nash) D. Banks USA: Massachusetts Reading: Reading R. Frohock 1880
NEBC: 00863002 Piptochaetium avenaceum (Linnaeus) Parodi USA: Massachusetts Malden: Malden R. Frohock 1880-6-14
NEBC: 00339132 Schizachyrium scoparium (Michaux) Nash USA: Massachusetts Fells [Middlesex Fells Reservation] R. Frohock 1880-8
NEBC: 00680739 Sorghastrum nutans (Linnaeus) Nash USA: Massachusetts Glenwood R. Frohock 1880
NEBC: 01175068 Spartina pectinata Link USA: Massachusetts Malden: Malden R. Frohock 1879
Polygalaceae NEBC: 00711918 Polygala cruciata aquilonia Fernald & B. G. Schubert USA: Massachusetts Reading: Reading R. Frohock 1880
Polygonaceae NEBC: 00686465 Polygonum arifolium Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00749534 Polygonum aviculare aviculare Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-8-21
NEBC: 00645163 Polygonum careyi Olney USA: Massachusetts Medford: Medford, Glenwood R. Frohock 1880
NEBC: 00645846 Polygonum hydropiper Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00552573 Polygonum persicaria Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-7
NEBC: 00729269 Polygonum sagittatum Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00664784 Polygonum scandens Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-8
NEBC: 00501834 Rumex acetosella Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-7
Primulaceae NEBC: 00502711 Lysimachia hybrida Michaux USA: Massachusetts Malden: Malden R. Frohock
Ranunculaceae NEBC: 01013286 Hepatica americana (de Candolle) Ker Gawler USA: Massachusetts Melrose: Melrose R. Frohock
NEBC: 00485708 Ranunculus acris Linnaeus USA: Massachusetts Melrose: Melrose, Lynde meadow R. Frohock 1880-8-10
NEBC: 00697618 Thalictrum amphibolum Greene USA: Massachusetts Malden: Malden R. Frohock
Rosaceae NEBC: 00653332 Potentilla simplex Michaux USA: Massachusetts Concord: Concord R. Frohock 1880-6-17
NEBC: 00653808 Rosa virginiana Miller USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00646587 Rubus flagellaris Willdenow USA: Massachusetts Malden: Malden R. Frohock 1880
NEBC: 00771307 Rubus idaeus strigosus (Michaux) Maximowicz USA: Massachusetts Malden: Malden R. Frohock 1880
Rubiaceae NEBC: 00484431 Cephalanthus occidentalis Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-7-15
NEBC: 00650970 Mitchella repens Linnaeus USA: Massachusetts Concord: Concord R. Frohock 1880-6-1
Scrophulariaceae NEBC: 00505217 Verbascum thapsus Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880-8-15
Selaginellaceae NEBC: 00738020 Selaginella rupestris (Linnaeus) Spring USA: Massachusetts Malden: Malden, Pine Banks [Park] R. Frohock 1881-9-12
Smilacaceae NEBC: 00338100 Smilax rotundifolia Linnaeus USA: Massachusetts Middlesex Fells [Reservation] R. Frohock
Solanaceae NEBC: 00576176 Datura stramonium Linnaeus USA: Massachusetts Malden: Malden R. Frohock
NEBC: 00564369 Solanum dulcamara Linnaeus USA: Massachusetts Malden: Malden R. Frohock 1880
Sparganiaceae NEBC: 00667654 Sparganium americanum Nuttall USA: Massachusetts Concord R. Frohock 1880-6-1
NEBC: 00628749 Sparganium emersum Rehmann USA: Massachusetts Concord: Concord R. Frohock 1880-6-17
NEBC: 00628980 Sparganium eurycarpum Engelmann USA: Massachusetts Concord R. Frohock 1880-6-17
Trilliaceae NEBC: 00573180 Medeola virginiana Linnaeus USA: Massachusetts Malden: Malden, Pine Banks [Park] R. Frohock 1880
Urticaceae NEBC: 00359008 Boehmeria cylindrica (Linnaeus) Swartz USA: Massachusetts Middlesex Fells [Reservation] R. Frohock 1880-8
NEBC: 00866083 Urtica dioica gracilis (Aiton) Selander USA: Massachusetts Reading: Reading R. Frohock 1880
Vitaceae NEBC: 00631503 Vitis aestivalis bicolor Deam USA: Massachusetts Malden: Malden R. Frohock 1880
Woodsiaceae NEBC: 00676294 Woodsia ilvensis (Linnaeus) R. Brown USA: Massachusetts Malden: Malden R. Frohock 1881-6-27
