Harvard University Herbaria & Libraries

Aceraceae
GH: 01791952 Acer negundo Linnaeus USA: Virginia near Potomac River C. H. Knowlton 1920-6-27
GH: 01793386 Acer rubrum Linnaeus USA: Virginia by Potomac River. C. H. Knowlton 1920-6-27
Alismataceae
NEBC: 01080638 Sagittaria latifolia Willdenow USA: Maine East Machias: East Machias C. H. Knowlton 1920-8-7
Alliaceae
NEBC: 00734330 Allium tricoccum Aiton USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
Apiaceae
NEBC: 00737546 Taenidia integerrima (Linnaeus) Drude USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
Araceae
NEBC: 01080169 Arisaema triphyllum (Linnaeus) Schott USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
NEBC: 01010939 Arisaema triphyllum stewardsonii (Britton) Huttleston USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
Aristolochiaceae
NEBC: 00642368 Asarum canadense Linnaeus USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
Aspidiaceae
NEBC: 00727638 Polystichum ée (Spenner) Fée USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
Aspleniaceae
NEBC: 00701169 Asplenium trichomanes Linnaeus USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
Asteraceae
NEBC: 00626808 Erechtites hieraciifolius (Linnaeus) Rafinesque ex de Candolle USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
NEBC: 00834883 Erigeron canadensis Linnaeus USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00568015 Eurybia macrophylla (Linnaeus) Cassini USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 01055086 Euthamia graminifolia (Linnaeus) Nuttall USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
NEBC: 01055120 Euthamia graminifolia (Linnaeus) Nuttall USA: Massachusetts Yarmouth: Yarmouth C. H. Knowlton 1920-10-14
NEBC: 01079683 Euthamia tenuifolia USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
NEBC: 01034864 Eutrochium dubium (Willdenow ex Poiret) E. E. Lamont USA: Massachusetts Lakeville: Lakeville C. H. Knowlton 1920-8-31
NEBC: 01071470 Hieracium scabrum Michaux USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 01023599 Pseudognaphalium obtusifolium (Linnaeus) Hilliard & B. L. Burtt USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 01023684 Pseudognaphalium obtusifolium (Linnaeus) Hilliard & B. L. Burtt USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
NEBC: 01077159 Sericocarpus asteroides (Linnaeus) Britton, Sterns & Poggenburg USA: Massachusetts Barnstable Town C. H. Knowlton 1920-8-23
NEBC: 00553144 Solidago bicolor Linnaeus USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 01055610 Solidago gigantea Aiton USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 01056145 Solidago latissimifolia Miller USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
NEBC: 00501417 Solidago rugosa aspera (Aiton) Fernald USA: Massachusetts Harwich: Harwich C. H. Knowlton 1920-10-14
Athyriaceae
NEBC: 00746533 Cystopteris tenuis (Michaux) Desvaux USA: Vermont Mount Holly: Mount Holly C. H. Knowlton 1920-7-15
Berberidaceae
NEBC: 00606667 Berberis vulgaris Linnaeus USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
Betulaceae
NEBC: 00634480 Betula lenta Linnaeus USA: Massachusetts Hingham: Hingham C. H. Knowlton 1920-5-16
NEBC: 00727570 Corylus cornuta Marshall USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00695015 Ostrya virginiana (Miller) K. Koch USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
Boraginaceae
GH: 02026224 Cynoglossum virginianum Linnaeus USA: Maryland Mt. Washington C. H. Knowlton 1920-6-25
NEBC: 00716699 Lappula echinata Gilibert USA: Vermont Derby: Derby C. H. Knowlton 1920-7-11
GH: 01872942 Myosotis discolor Persoon ex Murray USA: Maryland Bay Shore. C. H. Knowlton 1920-7-28
Brassicaceae
NEBC: 00660245 Cardamine concatenata (Michaux) O. Schwarz USA: Vermont Manchester (Vermont): Manchester C. H. Knowlton 1920-5-27
NEBC: 00757409 Cardamine diphylla (Michaux) Alph. Wood USA: Vermont Manchester (Vermont): Manchester C. H. Knowlton 1920-5-27
NEBC: 00757553 Cardamine maxima (Nuttall) Alph. Wood USA: Vermont Manchester (Vermont): Manchester C. H. Knowlton 1920-5-27
NEBC: 00757560 Cardamine maxima (Nuttall) Alph. Wood USA: Vermont Manchester (Vermont): Manchester C. H. Knowlton 1920-5-27
NEBC: 00617346 Cardamine pratensis Linnaeus USA: Maine Croydon C. H. Knowlton 1920-6-4
Caesalpiniaceae
GH: 01676591 Cercis canadensis Linnaeus USA: Virginia [no additional data] C. H. Knowlton 1920-6-27
Caprifoliaceae
GH: 02038732 Lonicera japonica Thunberg USA: Maryland Mt. Washington C. H. Knowlton 1920-6-25
NEBC: 00702241 Viburnum acerifolium Linnaeus USA: Massachusetts Hingham: Hingham C. H. Knowlton 1920-6-20
NEBC: 00687981 Viburnum lentago Linnaeus USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
GH: 02187133 Viburnum prunifolium Linnaeus USA: Maryland Mt. Washington C. H. Knowlton 1920-6-25
Caryophyllaceae
NEBC: 00525212 Dianthus barbatus Linnaeus USA: Vermont Mount Holly: Mount Holly C. H. Knowlton 1920-7-15
GH: 01751538 Silene antirrhina Linnaeus USA: Maryland Towson C. H. Knowlton 1920-7-1
GH: 01753535 Silene stellata (Linnaeus) W. T. Aiton USA: Maryland Towson C. H. Knowlton 1920-7-1
GH: 01623903 Stellaria pubera Michaux USA: Maryland Mt. Washington C. H. Knowlton 1920-6-25
Celastraceae
NEBC: 00295189 Celastrus scandens Linnaeus USA: Vermont Ferrisburg: C. H. Knowlton 1920-5-30
Chenopodiaceae
NEBC: 00598928 Chenopodium capitatum (Linnaeus) Ascherson USA: Vermont Swanton: Swanton C. H. Knowlton 1920-7-12
Cistaceae
NEBC: 00699857 Lechea maritima Leggett ex Britton USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
Convolvulaceae
NEBC: 00716463 Cuscuta cephalanthi Engelmann USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
NEBC: 00714793 Cuscuta gronovii Willdenow ex Roemer & Schultes USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
Crassulaceae
GH: 01990390 Sedum ternatum Michaux USA: Virginia [no additional data] C. H. Knowlton 1920-6-27
Cupressaceae
NEBC: 00765649 Juniperus horizontalis Moench USA: Vermont Manchester (Vermont): Manchester C. H. Knowlton 1920-5-27
Cyperaceae
NEBC: 00214745 Carex annectens (E. P. Bicknell) E. P. Bicknell USA: Massachusetts Norwell: C. H. Knowlton 1920-6-20
GH: 02371804 Carex annectens (E. P. Bicknell) E. P. Bicknell USA: Maryland [data not captured] C. H. Knowlton 1920-6-25
NEBC: 00216434 Carex atlantica L. H. Bailey USA: Massachusetts Hingham: C. H. Knowlton 1920-6-20
NEBC: 00216433 Carex atlantica L. H. Bailey USA: Massachusetts Hingham: C. H. Knowlton 1920-6-20
NEBC: 00221901 Carex castanea Wahlenberg USA: Vermont Roxbury: C. H. Knowlton 1920-6-4
NEBC: 00229593 Carex deweyana deweyana USA: Vermont Shelburne: C. H. Knowlton 1920-5-31
NEBC: 00230305 Carex eburnea Boott USA: Vermont Ferrisburg: C. H. Knowlton 1920-5-30
NEBC: 00260287 Carex haydenii Dewey USA: Massachusetts Hingham: C. H. Knowlton 1920-6-20
NEBC: 00260807 Carex hormathodes Fernald USA: Massachusetts Norwell: C. H. Knowlton 1920-6-20
NEBC: 00254307 Carex houghtoniana Torrey ex Dewey USA: Maine New Gloucester: C. H. Knowlton 1920-7-25
NEBC: 00254561 Carex hystericina Muhlenberg ex Willdenow USA: Vermont Mount Holly: C. H. Knowlton 1920-7-15
NEBC: 00299464 Carex lacustris Willdenow USA: Vermont Derby: C. H. Knowlton 1920-7-11
NEBC: 00892378 Carex laxiculmis Schweinitz USA: Massachusetts Hingham: Hingham C. H. Knowlton 1920-6-20
NEBC: 00868812 Carex laxiflora Lamarck USA: Vermont Manchester (Duplicate): Manchester C. H. Knowlton 1920-5-27
NEBC: 01030563 Carex longii Mackenzie USA: Massachusetts Pembroke: [no additional data] C. H. Knowlton 1920-9-6
NEBC: 00895159 Carex merritt-fernaldii Mackenzie USA: Maine New Gloucester: New Gloucester C. H. Knowlton 1920-7-25
NEBC: 00726123 Carex muehlenbergii Schkuhr ex Willdenow USA: Massachusetts Norwell: Norwell C. H. Knowlton 1920-6-20
NEBC: 00854321 Carex peckii Howe ex Peck USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
NEBC: 00854435 Carex pedunculata Muhlenberg ex Willdenow USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
NEBC: 00854958 Carex plantaginea Lamarck USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
NEBC: 00802417 Carex seorsa Howe USA: Massachusetts Hingham: Hingham C. H. Knowlton 1920-6-20
NEBC: 00775835 Carex sparganioides Muhlenberg ex Willdenow USA: Vermont Swanton C. H. Knowlton 1920-7-12
NEBC: 00892781 Carex stipata Muhlenberg ex Willdenow USA: Massachusetts Hingham: Hingham C. H. Knowlton 1920-6-20
NEBC: 00874721 Carex stricta Lamarck USA: Massachusetts Hingham: Hingham C. H. Knowlton 1920-6-20
NEBC: 00874828 Carex vestita Willdenow USA: Massachusetts Scituate: Scituate C. H. Knowlton 1920-6-20
NEBC: 01042589 Cyperus dentatus Torrey USA: Massachusetts Lakeville: Lakeville C. H. Knowlton 1920-8-31
NEBC: 00672339 Dulichium arundinaceum (Linnaeus) Britton USA: Maine East Machias: East Machias C. H. Knowlton 1920-8-7
NEBC: 01048483 Eleocharis palustris (Linnaeus) Roemer & Schultes USA: Massachusetts Hingham: Hingham C. H. Knowlton 1920-6-20
NEBC: 01029372 Rhynchospora alba (Linnaeus) Vahl USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1920-8-5
NEBC: 00807372 Schoenoplectus pungens (Vahl) Palla USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
NEBC: 00807372 Scirpus pungens Vahl USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
Dryopteridaceae
NEBC: 00671945 Dryopteris intermedia (Muhlenberg ex Willdenow) A. Gray USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00704990 Dryopteris marginalis (Linnaeus) A. Gray USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00636279 Dryopteris marginalis (Linnaeus) A. Gray USA: Vermont Mount Holly: Mount Holly C. H. Knowlton 1920-7-25
Elaeagnaceae
NEBC: 00712846 Shepherdia canadensis Nuttall USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
Ericaceae
NEBC: 00707910 Arctostaphylos uva-ursi (Linnaeus) Sprengel USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
NEBC: 00553856 Monotropa uniflora Linnaeus USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00770656 Rhododendron viscosum (Linnaeus) Torrey USA: Massachusetts Plymouth: Plymouth C. H. Knowlton 1920-7-20
Euphorbiaceae
NEBC: 00699156 Chamaesyce polygonifolia (Linnaeus) Small USA: Massachusetts Yarmouth: Yarmouth C. H. Knowlton 1920-9-6
Fabaceae
NEBC: 00711172 Desmodium marilandicum (Linnaeus) de Candolle USA: Massachusetts Lakeville: Lakeville C. H. Knowlton 1920-8-31
GH: 01960386 Desmodium rotundifolium (Michaux) de Candolle USA: Maryland Mt. Washington C. H. Knowlton 1920-6-25
NEBC: 00739709 Lespedeza angustifolia (Pursh) Elliot USA: Massachusetts Barnstable Town C. H. Knowlton 1920-8-23
NEBC: 00711667 Lespedeza capitata Michaux USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
NEBC: 00754042 Lespedeza stuevei Nuttall USA: Massachusetts Barnstable Town C. H. Knowlton 1920-8-23
GH: 02135143 Robinia pseudoacacia Linnaeus USA: Virginia [data not captured] C. H. Knowlton 1920-6-27
Fagaceae
NEBC: 00662099 Quercus alba Linnaeus USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
NEBC: 00695095 Quercus coccinea Münchhausen USA: Massachusetts Barnstable Town C. H. Knowlton 1920-8-23
NEBC: 00716172 Quercus stellata Wangenheim USA: Massachusetts Barnstable Town C. H. Knowlton 1920-8-23
Gentianaceae
NEBC: 00717484 Bartonia virginica (Linnaeus) Britton, Stearn & Poggenburg USA: Massachusetts Hanson: Hanson C. H. Knowlton 1920-9-6
Geraniaceae
NEBC: 01070263 Geranium bicknellii Britton USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
GH: 01864247 Geranium carolinianum Linnaeus USA: Virginia [no additional data] C. H. Knowlton 1920-6-26
Hydrangeaceae
GH: 01737173 Hydrangea arborescens Linnaeus USA: Virginia by Potomac River C. H. Knowlton 1920-6-27
Hypericaceae
NEBC: 00774898 Triadenum fraseri (Spach) Gleason USA: Maine East Machias: East Machias C. H. Knowlton 1920-8-7
Iridaceae
GH: 01748663 Sisyrinchium angustifolium Miller USA: Maryland Mt. Washington. C. H. Knowlton 1920-6-25
Juglandaceae
NEBC: 00622028 Carya ovata (Miller) K. Koch USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
Juncaceae
NEBC: 01025796 Juncus brevicaudatus (Engelmann) Fernald USA: Maine East Machias: East Machias C. H. Knowlton 1920-8-7
GH: 02102465 Juncus dudleyi Wiegand USA: Virginia [data not captured] C. H. Knowlton 1920-6-27
NEBC: 00859129 Juncus filiformis Linnaeus USA: Maine East Machias: East Machias C. H. Knowlton 1920-8-7
NEBC: 00860744 Juncus marginatus Rostkovius USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 01045876 Juncus pelocarpus E. Meyer USA: Maine Roque Bluffs: Roque Bluffs C. H. Knowlton 1920-8-5
GH: 02398542 Juncus secundus P. Beauvois ex Poiret USA: Maryland [data not captured] C. H. Knowlton 1920-6-28
GH: 02397238 Juncus tenuis anthelatus Wiegand USA: Maryland [data not captured] C. H. Knowlton 1920-6-28
GH: 02397237 Juncus tenuis anthelatus Wiegand USA: Maryland [data not captured] C. H. Knowlton 1920-6-28
Lamiaceae
NEBC: 00749195 Lamium amplexicaule Linnaeus USA: Maine C. H. Knowlton 1920-8-5
NEBC: 00658604 Lycopus amplectens Rafinesque USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
NEBC: 00658702 Lycopus uniflorus Michaux USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00648484 Pycnanthemum muticum (Michaux) Persoon USA: Massachusetts Barnstable Town C. H. Knowlton 1920-8-23
GH: 01697099 Scutellaria elliptica Sprengel USA: Maryland Mt. Washington C. H. Knowlton 1920-6-25
GH: 01697746 Scutellaria integrifolia Linnaeus USA: Maryland Bay Shore C. H. Knowlton 1920-6-28
NEBC: 00612387 Thymus pulegioides Linnaeus USA: Vermont Danville: Danville C. H. Knowlton 1920-7-9
Lentibulariaceae
NEBC: 00731715 Utricularia intermedia Hayne USA: Vermont Derby: Derby C. H. Knowlton 1920-7-11
NEBC: 00736314 Utricularia purpurea Walter USA: Massachusetts Easton: Easton C. H. Knowlton 1920-8-25
NEBC: 00664608 Utricularia vulgaris macrorhiza (L. LeConte) R. T. Clausen USA: Vermont Derby: Derby C. H. Knowlton 1920-7-11
Liliaceae
NEBC: 01030902 Streptopus lanceolatus (Aiton) Reveal USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00810256 Trillium erectum Linnaeus USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
Lythraceae
NEBC: 01026310 Decodon verticillatus (Linnaeus) Elliott USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
Melastomataceae
NEBC: 01026360 Rhexia virginica Linnaeus USA: Massachusetts Middleborough: Middleborough C. H. Knowlton 1920-8-31
Moraceae
GH: 01545386 Morus rubra Linnaeus USA: Maryland Mt. Washington. C. H. Knowlton 1920-6-25
Onagraceae
NEBC: 00816252 Oenothera parviflora Linnaeus USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
Orchidaceae
NEBC: 01021014 Goodyera pubescens (Willdenow) R. Brown USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 01021618 Goodyera tesselata Loddiges USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00728678 Malaxis monophyllos brachypoda (A. Gray) F. Morris & E. A. Eames USA: Vermont Mount Holly: Mount Holly C. H. Knowlton 1920-7-15
NEBC: 01021933 Malaxis unifolia Michaux USA: Maine East Machias: East Machias C. H. Knowlton 1920-8-7
Papaveraceae
NEBC: 00722132 Dicentra canadensis (Goldie) Walpers USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
NEBC: 00660030 Dicentra cucullaria (Linnaeus) Bernhardi USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
Phrymaceae
NEBC: 00664685 Phryma leptostachya Linnaeus USA: Vermont Swanton: Swanton C. H. Knowlton 1920-7-12
Pinaceae
GH: 01093159 Pinus echinata Miller USA: Virginia [data not captured] C. H. Knowlton 1920-6-26
GH: 01113251 Pinus virginiana Miller USA: Virginia Dry open woods C. H. Knowlton 1920-6-26
GH: 01113274 Pinus virginiana Miller USA: Virginia [no additional data] C. H. Knowlton 1920-6-26
Plantaginaceae
NEBC: 00656426 Chaenorhinum minus (Linnaeus) Lange USA: Vermont Derby: Derby C. H. Knowlton 1920-7-11
GH: 01802846 Plantago major Linnaeus USA: Maryland [data not captured] C. H. Knowlton 1920-6-28
GH: 01804285 Plantago virginica Linnaeus USA: Virginia [data not captured] C. H. Knowlton 1920-6-26
NEBC: 00707116 Veronica americana Schweinitz ex Bentham USA: Vermont Mount Holly: Mount Holly C. H. Knowlton 1920-7-15
NEBC: 00656504 Veronica arvensis Linnaeus USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
NEBC: 00655487 Veronica officinalis Linnaeus USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
Poaceae
NEBC: 00835537 Anthoxanthum hirtum (Schrank) Y. Schouten & J. F. Veldkamp USA: New Hampshire Enfield: Enfield C. H. Knowlton 1920-6-4
NEBC: 01045232 Brachyelytrum aristosum (Michaux) P. Beauvois ex Branner & Coville USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00865596 Bromus ramosus Hudson USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 01175469 Danthonia compressa Austin USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00768730 Dichanthelium acuminatum implicatum (Scribner) Freckmann & Lelong USA: Massachusetts Norwell: Norwell C. H. Knowlton 1920-6-20
NEBC: 01151301 Echinochloa muricata (P. Beauvois) Fernald USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
NEBC: 00594943 Festuca filiformis Pourret USA: Massachusetts Norwell: Norwell C. H. Knowlton 1920-6-20
NEBC: 01148957 Oryzopsis asperifolia Michaux USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
NEBC: 01151799 Panicum capillare occidentale Rydberg USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 01150550 Puccinellia maritima (Hudson) Parlatore USA: Massachusetts Norwell: Norwell C. H. Knowlton 1920-6-20
NEBC: 01148847 Schizachne purpurascens (Torrey) Swallen USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
NEBC: 01182109 Sphenopholis intermedia Rydberg USA: Massachusetts Hingham: Hingham C. H. Knowlton 1920-6-20
NEBC: 00863880 Zizania aquatica Linnaeus USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
Polygalaceae
NEBC: 00752250 Polygala senega Linnaeus USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
GH: 01968363 Polygala senega Linnaeus USA: Maryland Walbrook. C. H. Knowlton 1920-6-30
Polygonaceae
NEBC: 00736907 Antenoron virginianum (Linnaeus) Roberty & Vautier USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
GH: 02361780 Polygonum aviculare Linnaeus USA: Maryland [data not captured] C. H. Knowlton 1920-6-28
NEBC: 00866357 Polygonum sagittatum Linnaeus USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00736907 Polygonum virginianum Linnaeus USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00650101 Rumex britannica Linnaeus USA: Massachusetts Pembroke: Pembroke C. H. Knowlton 1920-9-6
Primulaceae
NEBC: 00553350 Lysimachia hybrida Michaux USA: Maine East Machias: East Machias C. H. Knowlton 1920-8-7
Ranunculaceae
NEBC: 01034363 Actaea rubra (Aiton) Willdenow USA: Vermont Mount Holly: Mount Holly C. H. Knowlton 1920-7-15
GH: 01710453 Cimicifuga racemosa (Linnaeus) Nuttall USA: Maryland Mt. Washington C. H. Knowlton 1920-6-25
GH: 01657394 Clematis viorna Linnaeus USA: Virginia near Potomac C. H. Knowlton 1920-6-27
NEBC: 00553517 Coptis trifolia (Linnaeus) Salisbury USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00595943 Hepatica acutiloba de Candolle USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
NEBC: 01013260 Hepatica americana (de Candolle) Ker Gawler USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
NEBC: 00580551 Ranunculus repens Linnaeus USA: Massachusetts Norwell: Norwell C. H. Knowlton 1920-6-20
Rosaceae
NEBC: 00661045 Amelanchier arborea (F. Michaux) Fernald USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
NEBC: 00661641 Amelanchier humilis Wiegand USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
NEBC: 00661821 Amelanchier stolonifera Wiegand USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
GH: 00994031 Aruncus dioicus (Walter) Fernald USA: Virginia by Potomac C. H. Knowlton 1920-6-27
NEBC: 00709687 Crataegus submollis Sargent USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
NEBC: 00709688 Crataegus submollis Sargent USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
NEBC: 00703345 Fragaria vesca Linnaeus USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
NEBC: 00669588 Geum fragarioides (Michaux) Smedmark USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
NEBC: 00710463 Geum macrophyllum Willdenow USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
GH: 01603444 Rubus betulifolius Small USA: Maryland Mt. Washington C. H. Knowlton 1920-6-25
NEBC: 00659412 Spiraea latifolia (Aiton) Borkhausen USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
Rubiaceae
GH: 02359823 Galium concinnum Torrey & A. Gray USA: Virginia [data not captured] C. H. Knowlton 1920-6-27
NEBC: 00732152 Galium palustre Linnaeus USA: Vermont Mount Holly: Mount Holly C. H. Knowlton 1920-7-15
Rutaceae
NEBC: 01070742 Zanthoxylum americanum Miller USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
Salicaceae
NEBC: 00653895 Salix lucida Muhlenberg USA: Vermont Arlington: Arlington C. H. Knowlton 1920-5-26
NEBC: 00523343 Salix xrubens Schrank (pro sp.) USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
Santalaceae
NEBC: 00575349 Comandra umbellata (Linnaeus) Nuttall USA: Vermont Ferrisburg C. H. Knowlton 1920-5-30
Saxifragaceae
NEBC: 01008343 Chrysosplenium americanum Schweinitz ex Hooker USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
GH: 01733843 Heuchera americana Linnaeus USA: Maryland Mt. Washington. C. H. Knowlton 1920-6-25
NEBC: 00665290 Ribes glandulosum Grauer USA: Vermont Mount Holly: Mount Holly C. H. Knowlton 1920-7-15
NEBC: 00568999 Saxifraga virginiensis Michaux USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
NEBC: 01038887 Tiarella cordifolia Linnaeus USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
Smilacaceae
NEBC: 00865906 Smilax herbacea Linnaeus USA: Massachusetts Scituate: Scituate C. H. Knowlton 1920-6-20
Thelypteridaceae
NEBC: 00701458 Phegopteris connectilis (Michaux) Watt USA: Vermont Mount Holly: Mount Holly C. H. Knowlton 1920-7-15
Tiliaceae
NEBC: 00679340 Tilia americana Linnaeus USA: Vermont Swanton: Swanton C. H. Knowlton 1920-7-12
Typhaceae
GH: 00466945 Typha angustifolia Linnaeus USA: Maryland Bay Shore C. H. Knowlton 1920-6-28
Violaceae
NEBC: 00565947 Viola blanda Willdenow USA: New Hampshire Keene: Keene C. H. Knowlton 1920-8-19
NEBC: 00715820 Viola canadensis Linnaeus USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
NEBC: 00715821 Viola canadensis Linnaeus USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
GH: 02146455 Viola emarginata (Nuttall) LeConte USA: Maryland Walbrook C. H. Knowlton 1920-6-30
NEBC: 00721380 Viola rostrata Pursh USA: Vermont Shelburne: Shelburne C. H. Knowlton 1920-5-31
NEBC: 00665546 Viola selkirkii Pursh USA: Vermont Brookfield: Brookfield C. H. Knowlton 1920-6-4
NEBC: 00649280 Viola sororia Willdenow USA: Massachusetts Hingham: Hingham C. H. Knowlton 1920-5-16
NEBC: 00649281 Viola sororia Willdenow USA: Massachusetts Hingham: Hingham C. H. Knowlton 1920-5-16
NEBC: 00649454 Viola sororia Willdenow USA: Massachusetts Florida: Florida C. H. Knowlton 1920-5-26
Vitaceae
GH: 01578308 Vitis aestivalis Michaux USA: Maryland Mt. Washington. C. H. Knowlton 1920-6-25