Aceraceae NEBC: 00677127 Acer rubrum Linnaeus USA: Massachusetts Waltham: Waltham C. H. Knowlton 1907-4-27
Alismataceae NEBC: 01032688 Sagittaria latifolia Willdenow USA: Massachusetts Essex: Essex C. H. Knowlton 1907-8-11
NEBC: 01032708 Sagittaria latifolia Willdenow USA: Massachusetts Arlington: Arlington C. H. Knowlton 1907-8-3
Alliaceae NEBC: 00680605 Allium tricoccum Aiton USA: Massachusetts Waltham: Waltham C. H. Knowlton 1907
NEBC: 00775993 Allium tricoccum Aiton USA: Massachusetts Waltham: Waltham C. H. Knowlton 1907-4-27
Anacardiaceae NEBC: 00752595 Rhus typhina Linnaeus USA: Massachusetts Arlington: Arlington C. H. Knowlton 1907-8-3
Apiaceae GH: 00523679 Aethusa cynapium Linnaeus USA: Massachusetts Waltham: Waltham C. H. Knowlton 1907-8-10
NEBC: 00523680 Aethusa cynapium Linnaeus USA: Massachusetts Waltham: Waltham C. H. Knowlton 1907-8-10
NEBC: 01036026 Coelopleurum lucidum (Linnaeus) Fernald USA: Massachusetts Scituate: Scituate C. H. Knowlton 1907-7-28
Aquifoliaceae NEBC: 00767843 Ilex verticillata (Linnaeus) A. Gray USA: Massachusetts Essex: Essex C. H. Knowlton 1907-10-6
NEBC: 00767845 Ilex verticillata (Linnaeus) A. Gray USA: Massachusetts Hamilton: Hamilton C. H. Knowlton 1907-10-6
Araceae NEBC: 01032918 Calla palustris Linnaeus USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-6-23
Aristolochiaceae NEBC: 00642436 Asarum canadense Linnaeus USA: Massachusetts Sharon: Sharon C. H. Knowlton 1907-5-19
Asteraceae NEBC: 01065280 Antennaria howellii canadensis (Greene) Bayer USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-5
NEBC: 01007325 Antennaria howellii canadensis (Greene) Bayer USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-5-25
NEBC: 01007521 Antennaria howellii neodioica (Greene) Bayer USA: New Hampshire Pelham: Pelham C. H. Knowlton 1907-6-17
NEBC: 01007873 Antennaria neglecta Greene USA: Massachusetts Waltham: Waltham C. H. Knowlton 1907-5-11
NEBC: 01007876 Antennaria neglecta Greene USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-5-18
NEBC: 01053700 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-5-18
NEBC: 01053710 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-5-25
NEBC: 01023056 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-5-18
NEBC: 01023057 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Woburn: Woburn C. H. Knowlton 1907-5-18
NEBC: 01023089 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Halifax: Halifax C. H. Knowlton 1907-5-30
NEBC: 01053507 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Warren: Warren C. H. Knowlton 1907-6-9
NEBC: 01053508 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Warren: Warren C. H. Knowlton 1907-6-9
NEBC: 00587198 Arctium minus (Hill) Bernhardi USA: Massachusetts Waltham: Waltham C. H. Knowlton 1907-8-10
NEBC: 00587352 Cirsium vulgare (Savi) Tenore USA: Massachusetts Cambridge: Cambridge, Claypits C. H. Knowlton 1907-8-31
NEBC: 01052228 Erigeron pulchellus Michaux USA: New Hampshire Pelham: Pelham C. H. Knowlton 1907-6-17
NEBC: 01071514 Hieracium scabrum Michaux USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 00725418 Lactuca hirsuta Muhlenberg ex Nuttall USA: Massachusetts Arlington: Arlington C. H. Knowlton 1907-8-3
NEBC: 00718180 Matricaria discoidea de Candolle USA: Maine Strong: Strong C. H. Knowlton 1907-7-20
NEBC: 00718182 Matricaria discoidea de Candolle USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-5
NEBC: 00718184 Matricaria discoidea de Candolle USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-5
NEBC: 01019271 Mikania scandens (Linnaeus) Willdenow USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 01038803 Packera paupercula (Michaux) A. Löve & D. Löve USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-6-22
NEBC: 01028279 Packera schweinitziana (Nutt.) W.A. Weber & Á. Löve USA: Maine Machias: Machias C. H. Knowlton 1907-7-11
NEBC: 00637053 Rudbeckia hirta pulcherrima Farwell USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 00718467 Scorzoneroides autumnalis (Linnaeus) Moench USA: Massachusetts Essex: Essex C. H. Knowlton 1907-8-11
NEBC: 01056979 Solidago uliginosa Nuttall USA: Massachusetts Beverly: Beverly C. H. Knowlton 1907-9-15
NEBC: 00637571 Sonchus oleraceus Linnaeus USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-8-3
NEBC: 00697552 Symphyotrichum novi-belgii (Linnaeus) G. L. Nesom USA: Massachusetts Boston: Dorchester C. H. Knowlton 1907-9-28
NEBC: 01031817 Symphyotrichum puniceum (Linnaeus) Á. Löve & D. Löve USA: Massachusetts Hamilton: Hamilton C. H. Knowlton 1907-10-6
NEBC: 01016124 Symphyotrichum undulatum (Linnaeus) G. L. Nesom USA: Massachusetts Essex: Essex C. H. Knowlton 1907-10-6
NEBC: 00626370 Taraxacum officinale F. H. Wiggers USA: Massachusetts Needham: Needham C. H. Knowlton 1907-5-12
NEBC: 00577054 Tussilago farfara Linnaeus USA: Massachusetts Cambridge: W. [West] Cambridge C. H. Knowlton 1907-8-31
Athyriaceae NEBC: 00551865 Matteuccia struthiopteris (Linnaeus) Todaro USA: Massachusetts Westford: Westford C. H. Knowlton 1907-6-16
NEBC: 00662887 Onoclea sensibilis Linnaeus USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
Betulaceae NEBC: 00579804 Alnus glutinosa (Linnaeus) Gaertner USA: Massachusetts Medford: W. Medford, Mystic Pond [Upper and ... C. H. Knowlton 1907-6-22
NEBC: 00657117 Alnus incana rugosa (Du Roi) R. T. Clausen USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
Blechnaceae NEBC: 00628460 Anchistea virginica (Linnaeus) C. Presl USA: Massachusetts Belmont: Waltham (Waverley) [Waverley is in ... C. H. Knowlton 1907
NEBC: 00628460 Woodwardia virginica (Linnaeus) Smith USA: Massachusetts Belmont: Waltham (Waverley) [Waverley is in ... C. H. Knowlton 1907
Boraginaceae NEBC: 00685943 Anchusa officinalis Linnaeus USA: Massachusetts Boston: Boston C. H. Knowlton 1907-6-26
NEBC: 00716802 Myosotis verna Nuttall USA: New Hampshire Pelham: Pelham C. H. Knowlton 1907-6-17
Brassicaceae NEBC: 00610641 Barbarea verna (Miller) Ascherson USA: Massachusetts Sharon: Sharon C. H. Knowlton 1907-5-19
NEBC: 01065489 Boechera canadensis (Linnaeus) Al-Shehbaz USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-8-3
NEBC: 00592699 Camelina microcarpa Andrzejowski ex de Candolle USA: Maine Machias: Machias C. H. Knowlton 1907-7-5
NEBC: 00592700 Camelina microcarpa Andrzejowski ex de Candolle USA: Maine Machias: Machias C. H. Knowlton 1907-7-5
NEBC: 00660208 Cardamine bulbosa (Schreber ex Muhlenberg) Britton, Stearn & Poggenburg USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-5-25
NEBC: 00348426 Cardamine parviflora arenicola (Britton) O. E. Schulz USA: Massachusetts Canton: Blue Hill [Blue Hills Reservation] C. H. Knowlton 1907-6-1
NEBC: 00617813 Erysimum cheiranthoides Linnaeus USA: Massachusetts Dedham: Dedham C. H. Knowlton 1907-6-23
GH: 00735128 Euclidium syriacum (Linnaeus) W. T. Aiton USA: Massachusetts Dedham: Dedham C. H. Knowlton 1907-6-23
NEBC: 00602320 Thlaspi arvense Linnaeus USA: Massachusetts Arlington: Arlington, market garden C. H. Knowlton 1907-6-22
Caprifoliaceae NEBC: 00633349 Linnaea borealis americana (Forbes) Rehder USA: Maine Machias: Machias C. H. Knowlton 1907-7-9
NEBC: 00687093 Lonicera villosa (Michaux) Roemer & Schultes USA: Massachusetts Sharon: Sharon C. H. Knowlton 1907-5-19
GH: 00721223 Sambucus racemosa Linnaeus USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1 1907-7-6
Caryophyllaceae GH: 00564788 Cerastium fontanum vulgare (Hartman) Greuter & Burdet USA: Massachusetts Milton: Milton C. H. Knowlton 1907-6-1
GH: 00698537 Honckenya peploides robusta (Fernald) Hultén USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-5
GH: 00698657 Moehringia lateriflora robusta (Linnaeus) Fenzl USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-8
NEBC: 00602524 Saponaria officinalis Linnaeus USA: Massachusetts Essex: Essex C. H. Knowlton 1907-8-11
NEBC: 00525583 Silene vulgaris (Moench) Garcke USA: Massachusetts Boston: Boston, Fenway C. H. Knowlton 1907-6-26
NEBC: 00525819 Spergula arvensis Linnaeus USA: Massachusetts Dedham: Dedham C. H. Knowlton 1907-6-23
NEBC: 00693704 Stellaria borealis Bigelow USA: Maine Jonesport: Jonesport C. H. Knowlton 1907-7-10
NEBC: 00693849 Stellaria borealis Bigelow USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-6-23
Chenopodiaceae NEBC: 00598883 Chenopodium berlandieri bushianum (Aellen) Cronquist USA: Massachusetts Revere: Revere C. H. Knowlton 1907-9-22
NEBC: 00598885 Chenopodium berlandieri bushianum (Aellen) Cronquist USA: Massachusetts Milton: Milton C. H. Knowlton 1907-9-28
NEBC: 00732185 Chenopodium simplex (Torrey) Rafinesque USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-6-22
Convolvulaceae NEBC: 00655738 Calystegia sepium americana (Sims) Brummitt USA: Massachusetts Scituate: Scituate C. H. Knowlton 1907-7-28
Cornaceae NEBC: 00773477 Cornus alternifolia Linnaeus f. USA: Massachusetts Westford: Westford C. H. Knowlton 1907-6-16
NEBC: 00767068 Cornus amomum Miller USA: Maine Farmington: Farmington C. H. Knowlton 1907-7-17
NEBC: 00767116 Cornus amomum Miller USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 00713087 Cornus canadensis Linnaeus USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-6-23
Crassulaceae NEBC: 00586189 Sedum ternatum Michaux USA: Massachusetts Warren: Warren C. H. Knowlton 1907-6-9
Cupressaceae NEBC: 00765616 Juniperus horizontalis Moench USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-6
Cyperaceae NEBC: 00214152 Carex albicans emmonsii (Dewey ex Torrey) Rettig USA: Massachusetts Halifax: C. H. Knowlton 1907-5-30
NEBC: 00218432 Carex brunnescens (Persoon) Poiret USA: Maine Roque Bluffs: Roque Island C. H. Knowlton 1907-7-10
NEBC: 00219106 Carex canescens disjuncta (Fernald) Toivonen USA: Maine Roque Bluffs: C. H. Knowlton 1907-7-8
GH: 00219105 Carex canescens disjuncta (Fernald) Toivonen USA: Maine Roque Bluffs: C. H. Knowlton 1907-7-11
NEBC: 00228080 Carex conoidea Schkuhr ex Willdenow USA: Massachusetts Warren: C. H. Knowlton 1907-6-9
NEBC: 00248415 Carex crinita gynandra (Schweinitz) Schweinitz & Torrey USA: Maine Roque Bluffs: C. H. Knowlton 1907-7-8
NEBC: 00230243 Carex disperma Dewey USA: Massachusetts Brimfield: C. H. Knowlton 1907-6-9
GH: 00230456 Carex echinata echinata USA: Maine Roque Bluffs: C. H. Knowlton 1907-7-8
NEBC: 00230462 Carex echinata echinata USA: Maine Roque Bluffs: C. H. Knowlton 1907-7-8
NEBC: 00248415 Carex gynandra Schweinitz USA: Maine Roque Bluffs: C. H. Knowlton 1907-7-8
NEBC: 00260625 Carex hormathodes Fernald USA: Maine Roque Bluffs: C. H. Knowlton 1907-7-6
NEBC: 00299116 Carex intumescens Rudge USA: Massachusetts Arlington: C. H. Knowlton 1907-6-22
NEBC: 00807758 Carex pallescens Linnaeus USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-8
NEBC: 00854831 Carex pensylvanica Lamarck USA: Massachusetts Halifax: Halifax C. H. Knowlton 1907-5-30
NEBC: 01061079 Eriophorum virginicum Linnaeus USA: Massachusetts Essex: Essex C. H. Knowlton 1907-8-11
Dryopteridaceae NEBC: 00704375 Dryopteris cristata (Linnaeus) A. Gray USA: Massachusetts Manchester: Manchester C. H. Knowlton 1907-8-11
NEBC: 00634153 Dryopteris triploidea Wherry USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-6-23
NEBC: 00634249 Dryopteris uliginosa (A. Braun ex Döll) Kuntze ex Druce USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-6-23
Ericaceae NEBC: 00770070 Empetrum nigrum Linnaeus USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-8
NEBC: 01026174 Gaultheria hispidula (Linnaeus) Muhlenberg USA: Massachusetts Manchester: Manchester C. H. Knowlton 1907-8-11
NEBC: 00312142 Gaylussacia baccata (Wangenheim) K. Koch USA: Massachusetts Canton: Blue Hill [Blue Hills Resrevation] C. H. Knowlton 1907-6-1
NEBC: 00553772 Monotropa uniflora Linnaeus USA: Massachusetts Essex: Essex C. H. Knowlton 1907-8-11
NEBC: 00461503 Vaccinium angustifolium Aiton USA: Maine Machias: Machias C. H. Knowlton 1907-7-11
NEBC: 00519561 Vaccinium corymbosum Linnaeus USA: Massachusetts Halifax: Halifax C. H. Knowlton 1907-5-30
Eriocaulaceae NEBC: 00855294 Eriocaulon aquaticum (Hill) Druce USA: Massachusetts Winchester: Winchester, Winter Pond C. H. Knowlton 1907-8-3
Euphorbiaceae NEBC: 00534582 Euphorbia corollata Linnaeus USA: Massachusetts Natick: Natick, aqueduct C. H. Knowlton 1907-8-25
NEBC: 00578121 Euphorbia cyparissias Linnaeus USA: Massachusetts Halifax: Halifax C. H. Knowlton 1907-5-30
Fabaceae NEBC: 00643142 Lathyrus japonicus glaber (Seringe) Fernald USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-5
NEBC: 00739809 Lespedeza capitata Michaux USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 00504811 Trifolium pratense Linnaeus USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-6-22
Hamamelidaceae NEBC: 00640485 Hamamelis virginiana Linnaeus USA: Massachusetts Gloucester: Gloucester C. H. Knowlton 1907-11-3
Hypericaceae NEBC: 00773149 Hypericum ellipticum Hooker USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 00765258 Hypericum perforatum Linnaeus USA: Massachusetts Essex: Essex C. H. Knowlton 1907-8-11
Iridaceae NEBC: 00869971 Iris hookeri Penny ex Loudon USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-6
Lamiaceae NEBC: 00696414 Collinsonia canadensis Linnaeus USA: Massachusetts Dracut: Dracut C. H. Knowlton 1907-6-17
NEBC: 00685120 Galeopsis bifida Boenninghausen USA: Massachusetts Essex: Essex C. H. Knowlton 1907-8-11
NEBC: 00562604 Glechoma hederacea Linnaeus USA: Massachusetts Sharon: Sharon C. H. Knowlton 1907-5-19
NEBC: 00749224 Lamium amplexicaule Linnaeus USA: Massachusetts Waltham: Waltham C. H. Knowlton 1907-5-11
NEBC: 00751950 Mentha gracilis Sole USA: Massachusetts Cambridge: Cambridge C. H. Knowlton 1907-8-31
NEBC: 00591294 Nepeta cataria Linnaeus USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-8-3
NEBC: 00591159 Physostegia virginiana (Linnaeus) Bentham USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 00751805 Prunella vulgaris lanceolata (W. P. C. Barton) Fernald USA: Massachusetts Essex: Essex C. H. Knowlton 1907-8-11
NEBC: 00762381 Scutellaria lateriflora Linnaeus USA: Massachusetts Waltham: Waltham C. H. Knowlton 1907-8-10
Liliaceae NEBC: 00810866 Uvularia perfoliata Linnaeus USA: Massachusetts West Brimfield C. H. Knowlton 1907-6-8
Lycopodiaceae NEBC: 00647771 Dendrolycopodium dendroideum (Michaux) A. Haines USA: Maine Machias: Machias C. H. Knowlton 1907-7-9
NEBC: 00632275 Spinulum annotinum (Linnaeus) A. Haines USA: Massachusetts Manchester: Manchester C. H. Knowlton 1907-8-11
Malvaceae NEBC: 00761638 Malva neglecta Wallroth USA: Massachusetts Revere: Revere C. H. Knowlton 1907-9-22
Nymphaeaceae NEBC: 01014113 Nuphar variegata Engelmann ex Durand USA: Massachusetts Cambridge: Cambridge C. H. Knowlton 1907-6-29
Onagraceae NEBC: 01041716 Epilobium palustre Linnaeus USA: Massachusetts Manchester: Manchester C. H. Knowlton 1 1907-8-11
Ophioglossaceae NEBC: 00654643 Botrychium dissectum Sprengel USA: Massachusetts Essex: Essex C. H. Knowlton 1907-10-6
NEBC: 00654646 Botrychium dissectum Sprengel USA: Massachusetts Beverly: Beverly C. H. Knowlton 1907-9-15
NEBC: 00654654 Botrychium dissectum Sprengel USA: Massachusetts Essex: Essex C. H. Knowlton 1907-10-6
NEBC: 00654729 Botrychium dissectum Sprengel USA: Massachusetts Boston: Hyde Park C. H. Knowlton 1907-10-5
NEBC: 00739443 Botrychium matricariifolium A. Brown USA: Massachusetts Halifax: Halifax C. H. Knowlton 1907-5-30
NEBC: 00711606 Botrychium virginianum (Linnaeus) Swartz USA: Maine New Vineyard: New Vineyard C. H. Knowlton 1907-7-15
NEBC: 00690397 Botrychium virginianum (Linnaeus) Swartz USA: Massachusetts Palmer Town C. H. Knowlton 1907-6-8
Orchidaceae NEBC: 00834548 Corallorhiza trifida bracteata Chatelain USA: Maine Machias: Machias C. H. Knowlton 1907-7-11
NEBC: 01021817 Listera convallarioides (Swartz) Nuttall ex Elliott USA: Maine New Vineyard: New Vineyard C. H. Knowlton 1907-7-15
NEBC: 01056085 Platanthera obtusata (Banks ex Pursh) Lindley USA: Maine New Vineyard: New Vineyard C. H. Knowlton 1907-7-15
AMES: 01056080 Platanthera obtusata (Banks ex Pursh) Lindley USA: Maine Machias: Machias C. H. Knowlton 2532, 3872 1907-7-11
Orobanchaceae NEBC: 00731099 Melampyrum lineare Desrousseaux USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-6-23
Osmundaceae NEBC: 00639810 Osmunda claytoniana Linnaeus USA: Massachusetts Palmer Town C. H. Knowlton 1907-6-8
Oxalidaceae NEBC: 00833098 Oxalis montana Rafinesque USA: Maine Machias: Machias C. H. Knowlton 1907-7-9
NEBC: 01013385 Oxalis stricta Linnaeus USA: Massachusetts Cambridge: Cambridge, Clay pits C. H. Knowlton 1907-8-31
Phrymaceae NEBC: 00664729 Phryma leptostachya Linnaeus USA: Massachusetts Woburn: Woburn C. H. Knowlton 1907-8-3
Pinaceae NEBC: 00230661 Larix laricina (Du Roi) Koch USA: Maine Roque Bluffs: C. H. Knowlton 1907-7-8
NEBC: 00576694 Pinus resinosa Aiton USA: Massachusetts Woburn: Woburn, Zion Hill C. H. Knowlton 1907-10-19
Plantaginaceae NEBC: 00650562 Plantago maritima juncoides (Lamarck) A. Gray USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-5
Poaceae NEBC: 00622446 Alopecurus geniculatus Linnaeus USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-6-23
NEBC: 01045123 Calamagrostis canadensis (Michaux) P. Beauvois USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-6-23
NEBC: 00609311 Dactylis glomerata Linnaeus USA: Massachusetts Westwood: Westwood C. H. Knowlton 1907-6-23
NEBC: 00875604 Dichanthelium sphaerocarpon (Elliott) Gould USA: Massachusetts Framingham: Framingham C. H. Knowlton 1907-7-26
NEBC: 00613884 Festuca rubra Linnaeus USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-6
NEBC: 01149779 Milium effusum Linnaeus USA: Maine New Vineyard: New Vineyard C. H. Knowlton 1907-7-15
NEBC: 00595316 Poa annua Linnaeus USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-5-25
Polemoniaceae NEBC: 00592522 Phlox subulata Linnaeus USA: Massachusetts Westford: Westford, near graveyard C. H. Knowlton 1907-6-16
Polygonaceae NEBC: 00759064 Polygonum convolvulus Linnaeus USA: Massachusetts Woburn: Woburn, Horn Pond Hill C. H. Knowlton 1907-8-3
NEBC: 00759065 Polygonum convolvulus Linnaeus USA: Massachusetts Woburn: Woburn C. H. Knowlton 1907-8-3
NEBC: 00729271 Polygonum sagittatum Linnaeus USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 00650091 Rumex britannica Linnaeus USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 00749957 Rumex crispus Linnaeus USA: Massachusetts Cambridge: Cambridge C. H. Knowlton 1907-6-29
Portulacaceae NEBC: 00675592 Montia fontana Linnaeus USA: Maine Jonesboro: Jonesboro C. H. Knowlton 1907-7-10
Primulaceae NEBC: 01076288 Lysimachia terrestris (Linnaeus) Britton, Sterns & Poggenburg USA: Massachusetts Cambridge: Cambridge C. H. Knowlton 1907-8-31
Ranunculaceae NEBC: 00719339 Ranunculus sceleratus Linnaeus USA: Massachusetts Cambridge: Cambridge, Clay pits C. H. Knowlton 1907-6-29
NEBC: 00697626 Thalictrum amphibolum Greene USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-6-22
NEBC: 00552810 Thalictrum dioicum Linnaeus USA: Massachusetts Canton: Canton C. H. Knowlton 1907-5-19
Rosaceae NEBC: 00423415 Aronia melanocarpa (Michaux) Elliott USA: Massachusetts Milton: Blue Hill [Blue Hills Reservation] C. H. Knowlton 1907-6-1
NEBC: 00674196 Aronia melanocarpa (Michaux) Elliott USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 00744152 Aronia melanocarpa (Michaux) Elliott USA: Massachusetts Halifax: Halifax C. H. Knowlton 1907-5-30
NEBC: 00756373 Comarum palustre Linnaeus USA: Massachusetts Cambridge: Cambridge C. H. Knowlton 1907-6-29
NEBC: 00674694 Crataegus chrysocarpa Ashe USA: Massachusetts Brimfield: Brimfield C. H. Knowlton 1907-6-9
NEBC: 00694284 Crataegus keepii Sargent USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-8
NEBC: 00706647 Crataegus macrosperma Ashe USA: Massachusetts Brimfield: Brimfield C. H. Knowlton 1907-6-9
NEBC: 00706648 Crataegus macrosperma Ashe USA: Massachusetts Brimfield: Brimfield C. H. Knowlton 1907-6-9
NEBC: 00524141 Fragaria vesca americana Porter USA: Massachusetts Palmer Town C. H. Knowlton 1907-6-8
NEBC: 00565512 Geum rivale Linnaeus USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-8
NEBC: 00703207 Malus pumila Miller USA: Massachusetts Sharon: Sharon C. H. Knowlton 1907-5-19
NEBC: 00756285 Potentilla fruticosa (Linnaeus) Rydberg USA: Massachusetts Essex: Essex C. H. Knowlton 1907-8-11
NEBC: 00524566 Potentilla recta Linnaeus USA: Massachusetts Waltham: Waltham C. H. Knowlton 1907
GH: 00673876 Prunus maritima Marshall USA: Massachusetts Halifax: Halifax C. H. Knowlton 1907-5-30
NEBC: 00423415 Pyrus melanocarpa (Michaux) Willdenow USA: Massachusetts Milton: Blue Hill [Blue Hills Reservation] C. H. Knowlton 1907-6-1
NEBC: 00653779 Rosa virginiana Miller USA: Massachusetts Essex: Essex C. H. Knowlton 1907-8-11
NEBC: 00758767 Rubus canadensis Linnaeus USA: Maine Weld: Weld C. H. Knowlton 1907-7-18
NEBC: 00758768 Rubus canadensis Linnaeus USA: Maine Weld: Weld C. H. Knowlton 1907-7-18
NEBC: 00646176 Rubus canadensis Linnaeus USA: Maine Machias: Machias C. H. Knowlton 1907-7-11
NEBC: 00646177 Rubus canadensis Linnaeus USA: Maine Machias: Machias C. H. Knowlton 1907-7-11
NEBC: 00758851 Rubus chamaemorus Linnaeus USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-6
NEBC: 00758852 Rubus chamaemorus Linnaeus USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-11
NEBC: 00651650 Rubus odoratus Linnaeus USA: Massachusetts Cambridge: Cambridge C. H. Knowlton 1907-8-31
NEBC: 00643573 Rubus parviflorus Nuttall USA: Massachusetts Boston: Boston C. H. Knowlton 1907-6-26
NEBC: 00643574 Rubus parviflorus Nuttall USA: Massachusetts Boston: Boston C. H. Knowlton 1907-6-26
NEBC: 00641420 Rubus pubescens Rafinesque USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-5-18
NEBC: 00641430 Rubus pubescens Rafinesque USA: Massachusetts Norwood: Norwood C. H. Knowlton 1907-5-25
NEBC: 00710162 Spiraea tomentosa Linnaeus USA: Massachusetts Arlington: Arlington C. H. Knowlton 1907-8-3
Rubiaceae NEBC: 00558415 Galium circaezans hypomalacum Fernald USA: Massachusetts Beverly: Beverly C. H. Knowlton 1907-9-16
NEBC: 00866467 Galium tinctorium Linnaeus USA: Massachusetts Beverly: Beverly C. H. Knowlton 1907-9-15
GH: 00820085 Galium trifidum Linnaeus USA: Massachusetts Cambridge: Cambridge C. H. Knowlton 1907-8-31
NEBC: 00503390 Galium triflorum Michaux USA: Massachusetts Beverly: Beverly C. H. Knowlton 1907-9-15
Salicaceae NEBC: 00771969 Salix alba Linnaeus USA: Massachusetts Boston: Boston, Fenway C. H. Knowlton 1907-6-26
NEBC: 00771970 Salix alba Linnaeus USA: Massachusetts Boston: Boston C. H. Knowlton 1907-6-26
NEBC: 00771971 Salix alba Linnaeus USA: Massachusetts Boston: Boston C. H. Knowlton 1907-6-26
NEBC: 00724881 Salix bebbiana Sargent USA: New Hampshire Pelham: Pelham C. H. Knowlton 1907-6-17
NEBC: 00756680 Salix discolor Muhlenberg USA: Massachusetts Westford: Westford C. H. Knowlton 1907-6-16
NEBC: 00756681 Salix discolor Muhlenberg USA: Massachusetts Woburn: Woburn C. H. Knowlton 1907-4-7
NEBC: 00763055 Salix eriocephala Michaux USA: Massachusetts Arlington: Arlington C. H. Knowlton 1907-5-18
GH: 00441588 Salix eriocephala Michaux USA: Massachusetts Sharon: Sharon C. H. Knowlton 1907-5-19
NEBC: 00653925 Salix lucida Muhlenberg USA: Massachusetts Boston: Boston C. H. Knowlton 1907-6-26
Santalaceae NEBC: 00686046 Geocaulon lividum (Richardson) Fernald USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-6
Saxifragaceae NEBC: 01008190 Chrysosplenium americanum Schweinitz ex Hooker USA: Massachusetts Waltham: Waltham, Clematis Brook C. H. Knowlton 1907-4-27
NEBC: 00523222 Ribes odoratum H. Wendland USA: Massachusetts Warren: Warren C. H. Knowlton 1907-6-9
Scrophulariaceae NEBC: 00668982 Mimulus ringens Linnaeus USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
NEBC: 00505219 Verbascum thapsus Linnaeus USA: Massachusetts Natick: Natick C. H. Knowlton 1907-8-25
Thelypteridaceae NEBC: 00701265 Phegopteris connectilis (Michaux) Watt USA: Maine Machias: Machias C. H. Knowlton 1907-7-9
NEBC: 00701396 Phegopteris connectilis (Michaux) Watt USA: New Hampshire Pelham: Pelham C. H. Knowlton 1907-6-17
NEBC: 00708405 Thelypteris palustris pubescens (G. Lawson) Fernald USA: Massachusetts Winchester: Winchester C. H. Knowlton 1907-8-11
NEBC: 00628130 Thelypteris simulata (Davenport) Nieuwland USA: Massachusetts Essex: Essex C. H. Knowlton 1907-10-6
Urticaceae NEBC: 00658378 Boehmeria cylindrica (Linnaeus) Swartz USA: Vermont Beverly C. H. Knowlton 1907-9-15
Violaceae NEBC: 00565785 Viola blanda Willdenow USA: Maine Machias: Machias C. H. Knowlton 1907-7-9
NEBC: 00565786 Viola blanda Willdenow USA: Maine Machias: Machias C. H. Knowlton 1907-7-9
NEBC: 00565794 Viola blanda Willdenow USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1907-7-11
NEBC: 00560202 Viola blanda Willdenow USA: Massachusetts Brimfield: Brimfield C. H. Knowlton 1907-6-9
NEBC: 00659719 Viola fernaldii House USA: Massachusetts Sharon: Sharon C. H. Knowlton 1907-5-19
NEBC: 00715910 Viola pallens (Banks ex Gingins) Brainerd USA: Maine Jonesport: Jonesport C. H. Knowlton 1907-7-10
NEBC: 00713865 Viola pubescens Aiton USA: Massachusetts Warren: Warren C. H. Knowlton 1907-6-9
NEBC: 00687479 Viola renifolia A. Gray USA: Maine New Vineyard: New Vineyard C. H. Knowlton 1907-7-15
