Harvard University Herbaria & Libraries

Alismataceae
GH: 01653589 Sagittaria cristata Engelmann Canada: Ontario [data not captured] P. V. Krotkov 8648 1934-8-11
Apocynaceae
GH: 02179700 Apocynum cannabinum Linnaeus Canada: Ontario Cochrane District: Gillies Lake; Bruce Penin... P. V. Krotkov 9332 1934-7-1
Araceae
GH: 00444148 Acorus americanus (Rafinesque) Rafinesque Canada: Ontario Temagami Forest Reserve: Loon Bay P. V. Krotkov 5082 1934
Aristolochiaceae
GH: 01681970 Asarum canadense Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 8983 1934-5-28
Asteraceae
GH: 02172093 Arctium minus (Hill) Bernhardi Canada: Ontario [data not captured] P. V. Krotkov 9452 1934-7-28
GH: 01003538 Artemisia abrotanum Linnaeus Canada: Ontario Bruce Peninsula; Barrow Bay P. V. Krotkov 9458 1934-8-25
GH: 01003521 Artemisia absinthium Linnaeus Canada: Ontario Bruce Peninsula; Forty Hills Rd. P. V. Krotkov 9453 1934-8-7
GH: 01234303 Artemisia pontica Linnaeus Canada: Ontario Cape Croker P. V. Krotkov 9460 1934-8-8
GH: 01237028 Artemisia sp. Canada: Ontario Bruce Peninsula; Cape Croker P. V. Krotkov 9460 1934-8-8
GH: 01234983 Artemisia vulgaris Linnaeus Canada: Ontario Bruce Peninsula; Wiarton P. V. Krotkov 9455 1934-8-16
GH: 01234980 Artemisia vulgaris Linnaeus Canada: Ontario Bruce Peninsula; Wiarton P. V. Krotkov 9455 1934-8-16
GH: 02142185 Cichorium intybus Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9492 1934-7-16
GH: 02172943 Cirsium arvense (Linnaeus) Scopoli Canada: Ontario [data not captured] P. V. Krotkov 9493 1934-7-13
GH: 02021994 Cirsium vulgare (Savi) Tenore Canada: Ontario [data not captured] P. V. Krotkov 9496 1934-7-17
GH: 02216861 Conyza canadensis (Linnaeus) Cronquist Canada: Ontario [data not captured] P. V. Krotkov 9501 1934-8-8
GH: 02205052 Doellingeria umbellata (Miller) Nees Canada: Ontario [data not captured] P. V. Krotkov 9482 1934-8-13
GH: 02204997 Doellingeria umbellata (Miller) Nees Canada: Ontario [data not captured] P. V. Krotkov 9482 1934-8-13
GH: 02207491 Erigeron annuus (Linnaeus) Persoon Canada: Ontario [data not captured] P. V. Krotkov 9499 1934-7-1
GH: 02351628 Erigeron strigosus Muhlenberg ex Willdenow Canada: Ontario [data not captured] P. V. Krotkov 9503 1934-7-3
GH: 01832144 Hieracium kalmii Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9513 1934-7-23
GH: 01834151 Lactuca biennis (Moench) Fernald Canada: Ontario [data not captured] P. V. Krotkov 9518 1934-8-13
GH: 01834229 Lactuca canadensis Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9516 1934-7-3
Betulaceae
GH: 02194794 Betula papyrifera Marshall Canada: Ontario [data not captured] P. V. Krotkov 8951 1934-7-21
GH: 02194763 Betula papyrifera Marshall Canada: Ontario [data not captured] P. V. Krotkov 8955 1934-8-14
GH: 02194762 Betula papyrifera Marshall Canada: Ontario [data not captured] P. V. Krotkov 8952 1934-8-5
GH: 02071962 Corylus cornuta Marshall Canada: Ontario [data not captured] P. V. Krotkov 8965 1934-7-14
GH: 02103265 Ostrya virginiana (Miller) K. Koch Canada: Ontario [data not captured] P. V. Krotkov 8968 1934-7-16
GH: 02103248 Ostrya virginiana (Miller) K. Koch Canada: Ontario [data not captured] P. V. Krotkov 8966 1934-5-25
Brassicaceae
GH: 00960504 Arabis hirsuta pycnocarpa (M. Hopkins) Rollins Canada: Ontario [data not captured] P. V. Krotkov 9072 1934-8-4
GH: 01181937 Boechera divaricarpa (A. Nelson) A. Löve & D. Löve Canada: Ontario [data not captured] P. V. Krotkov 9074 1934-6-16
GH: 01098127 Capsella bursa-pastoris (Linnaeus) Medikus Canada: Ontario [data not captured] P. V. Krotkov 9078 1934-6-19
GH: 00983292 Cardamine diphylla (Michaux) Alph. Wood Canada: Ontario [data not captured] P. V. Krotkov 9082 1934-5-25
GH: 00999270 Cardamine pensylvanica Muhlenberg ex Willdenow Canada: Ontario [data not captured] P. V. Krotkov 9081 1934-6-9
GH: 00999720 Cardamine pratensis Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9079 1934-5-29
GH: 00986312 Descurainia incana (Bernhardi ex Fischer & C. A. Meyer) Dorn Canada: Ontario [data not captured] P. V. Krotkov 9095 1934-7-7
GH: 01084718 Diplotaxis tenuifolia (Linnaeus) de Candolle Canada: Ontario [data not captured] P. V. Krotkov 9083 1934-8-16
GH: 01103782 Draba cana Rydberg Canada: Ontario [data not captured] P. V. Krotkov 9085 1934-8-25
GH: 01538484 Erysimum cheiranthoides Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9086 1934-6-9
Chenopodiaceae
GH: 01826332 Atriplex patula Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9004 1934-8-16
GH: 01781303 Blitum capitatum Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9005 1934-7-16
GH: 01783833 Salsola tragus Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9007 1934-8-8
Cupressaceae
GH: 02105231 Juniperus horizontalis Moench Canada: Ontario [data not captured] P. V. Krotkov 8605 1934-5-26
Cyperaceae
GH: 02395412 Carex diandra Schrank Canada: Ontario [data not captured] P. V. Krotkov 8777 1934-6-19
GH: 02392690 Carex exilis Dewey Canada: Ontario [data not captured] P. V. Krotkov 8750 1934-6-19
GH: 02392687 Carex exilis Dewey Canada: Ontario [data not captured] P. V. Krotkov 8741 1934-6-29
GH: 02392685 Carex exilis Dewey Canada: Ontario [data not captured] P. V. Krotkov 8750 1934-6-19
GH: 02392871 Carex interior L. H. Bailey Canada: Ontario [data not captured] P. V. Krotkov 8778 1934-6-21
GH: 01772455 Carex intumescens Rudge Canada: Ontario [data not captured] P. V. Krotkov 8761 1934-7-31
GH: 01684645 Carex lupulina Muhlenberg ex Willdenow Canada: Ontario [data not captured] P. V. Krotkov 8763 1934-8-1
GH: 01772140 Carex lupulina Muhlenberg ex Willdenow Canada: Ontario [data not captured] P. V. Krotkov 8763 1934-8-1
GH: 02395594 Carex prairea Dewey Canada: Ontario [data not captured] P. V. Krotkov 8777 1934-6-19
GH: 01773290 Carex retrorsa Schweinitz Canada: Ontario [data not captured] P. V. Krotkov 8758 1934-6-25
GH: 02391367 Carex sterilis Schkuhr ex Willdenow Canada: Ontario [data not captured] P. V. Krotkov 8773 1934-6-28
GH: 02395868 Carex stipata Muhlenberg ex Willdenow Canada: Ontario [data not captured] P. V. Krotkov 8748 1934-6-19
GH: 01773954 Carex tuckermanii Dewey Canada: Ontario [data not captured] P. V. Krotkov 8762 1934-8-11
Droseraceae
GH: 01143962 Drosera linearis Goldie Canada: Ontario Crane Lake. Bruce Peninsula. P. V. Krotkov 9102 1934-8-4
GH: 01143963 Drosera linearis Goldie Canada: Ontario Sauble Beach. Bruce Peninsula. P. V. Krotkov 9101 1934-8-16
Ericaceae
GH: 01536205 Arctostaphylos uva-ursi (Linnaeus) Sprengel Canada: Ontario Stokes Bay P. V. Krotkov 9290 1934-5-24
GH: 01537772 Chamaedaphne calyculata (Linnaeus) Moench Canada: Ontario Tobermory P. V. Krotkov 9291 1934-8-11
GH: 01562281 Chimaphila umbellata cisatlantica S. F. Blake Canada: Ontario Spruce Grove. Stokes Bay P. V. Krotkov 9292 1934-8-20
GH: 01591742 Gaultheria hispidula (Linnaeus) Muhlenberg Canada: Ontario Bruce Peninsula; Stokes Bay P. V. Krotkov 9294 1934-7-31
GH: 01591743 Gaultheria hispidula (Linnaeus) Muhlenberg Canada: Ontario Bruce Peninsula; Lake Ira P. V. Krotkov 9293 1934-6-19
GH: 01592289 Gaylussacia baccata (Wangenheim) K. Koch Canada: Ontario Tobermory; Bruce Peninsula P. V. Krotkov 9307 1934-8-11
GH: 01592292 Gaylussacia baccata (Wangenheim) K. Koch Canada: Ontario Bruce Peninsula; Tobermory P. V. Krotkov 9307 1934-8-11
GH: 01593545 Kalmia angustifolia Linnaeus Canada: Ontario Bruce Peninsula; Big Bay P. V. Krotkov 9295 1934-7-8
GH: 01718862 Moneses uniflora (Linnaeus) A. Gray Canada: Ontario Stokes Bay P. V. Krotkov 9297 1934-7-31
GH: 01718871 Moneses uniflora (Linnaeus) A. Gray Canada: Ontario Stokes Bay. P. V. Krotkov 9297 1934-7-31
GH: 01719193 Monotropa hypopitys Linnaeus Canada: Ontario Stokes Bay P. V. Krotkov 9298 1934-8-5
GH: 01719446 Monotropa uniflora Linnaeus Canada: Ontario Stokes Bay P. V. Krotkov 9299 1934-7-31
GH: 01719831 Orthilia secunda (Linnaeus) House Canada: Ontario Stokes Bay P. V. Krotkov 9306 1934-7-19
GH: 01683992 Pyrola asarifolia Michaux Canada: Ontario [data not captured] P. V. Krotkov 9300 1934-6-21
GH: 01684973 Pyrola chlorantha Swartz Canada: Ontario [data not captured] P. V. Krotkov 9303 1934-8-3
GH: 01761227 Pyrola elliptica Nuttall Canada: Ontario [data not captured] P. V. Krotkov 9304 1934-7-17
Fabaceae
GH: 02129645 Medicago lupulina Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9174 1934-6-13
GH: 02129927 Medicago sativa Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9175 1934-7-13
GH: 02130089 Melilotus albus Medikus Canada: Ontario [data not captured] P. V. Krotkov 9176 1934-7-7
GH: 02130345 Melilotus officinalis (Linnaeus) Lamarck Canada: Ontario [data not captured] P. V. Krotkov 9177 1934-6-24
GH: 02343844 Trifolium pratense Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9180 1934-6-21
GH: 02344136 Trifolium repens Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9179 1934-6-14
GH: 02344133 Trifolium repens Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9181 1934-6-16
Hippuridaceae
GH: 02000161 Hippuris vulgaris Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9254 1934-8-10
Juncaceae
GH: 02098603 Juncus alpinoarticulatus americanus (Farwell) Hämet-Ahti Canada: Ontario [data not captured] P. V. Krotkov 8826 1934-7-11
GH: 02098885 Juncus articulatus Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 8828 1934-8-8
GH: 02098883 Juncus articulatus Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 8827 1934-8-2
GH: 02100421 Juncus bufonius Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 8831 1934-8-22
GH: 02102235 Juncus dudleyi Wiegand Canada: Ontario [data not captured] P. V. Krotkov 8834 1934-7-7
GH: 02102292 Juncus dudleyi Wiegand Canada: Ontario [data not captured] P. V. Krotkov 8835 1934-7-7
GH: 02102537 Juncus effusus Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 8836 1934-7-9
GH: 02399027 Juncus nodosus Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 8840 1934-7-7
GH: 02399026 Juncus nodosus Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 8838 1934-8-3
GH: 02399748 Juncus pylaei Laharpe Canada: Ontario [data not captured] P. V. Krotkov 8836 1934-7-9
Lentibulariaceae
GH: 01974163 Pinguicula villosa Linnaeus Canada: Ontario Big Bay. P. V. Krotkov 9397 1934-7-8
GH: 01975218 Utricularia intermedia Hayne Canada: Ontario Stokes Bay. P. V. Krotkov 9401 1934-6-21
Onagraceae
GH: 00073029 Oenothera parviflora Linnaeus Canada: Ontario Stokes Bay P. V. Krotkov 9252 1934-7-11
GH: 00073029 Oenothera perangusta R. R. Gates Canada: Ontario Stokes Bay P. V. Krotkov 9252 1934-7-11
GH: 00073029 Oenothera sp. Canada: Ontario Stokes Bay P. V. Krotkov 9252 1934-7-11
Orchidaceae
GH: 01938076 Corallorhiza maculata (Rafinesque) Rafinesque Canada: Ontario Bruce Peninsula, Stokes Bay P. V. Krotkov 8884 1934-6-1
GH: 01937970 Cypripedium parviflorum Salisbury USA: California Ontario: Bruce Peninsula. Stokes Bay P. V. Krotkov 8892 1934-6-11
AMES: 02065429 Cypripedium reginae Walter Canada: Ontario Bruce Peninsula. Big Bay P. V. Krotkov 8890 1934-7-8
GH: 02032895 Goodyera oblongifolia Rafinesque Canada: Ontario Stokes Bay P. V. Krotkov 8896 1934-8-14
AMES: 02032930 Goodyera oblongifolia Rafinesque Canada: Ontario Stokes Bay P. V. Krotkov 8896 1934-8-14
AMES: 02050881 Listera convallarioides (Swartz) Nuttall ex Elliott Canada: Ontario Stokes Bay P. V. Krotkov 8911 1934-7-31
GH: 02063264 Platanthera dilatata (Pursh) Lindley ex Beck Canada: Ontario Big Bay P. V. Krotkov 8899 1934-7-8
GH: 02045712 Platanthera hyperborea (Linnaeus) Lindley Canada: Ontario Stokes Bay P. V. Krotkov 8901 1934-7-31
GH: 02046017 Platanthera leucophaea (Nuttall) Lindley Canada: Ontario George Lake P. V. Krotkov 8903 1934-7-18
GH: 02046018 Platanthera leucophaea (Nuttall) Lindley Canada: Ontario George Lake P. V. Krotkov 8903 1934-7-18
GH: 02046701 Platanthera orbiculata (Pursh) Lindley Canada: Ontario Stokes Bay P. V. Krotkov 8904 1934-7-31
AMES: 02046707 Platanthera orbiculata (Pursh) Lindley Canada: Ontario Stokes Bay P. V. Krotkov 8904 1934-7-31
GH: 02046909 Platanthera psycodes (Linnaeus) Lindley Canada: Ontario Stokes Bay P. V. Krotkov 8905 1934-7-13
GH: 02050295 Platanthera unalascensis (Sprengel) Kurtz Canada: Ontario Stokes Bay P. V. Krotkov 8908 1934-7-7
GH: 02050296 Platanthera unalascensis (Sprengel) Kurtz Canada: Ontario Stokes Bay P. V. Krotkov 8907 1934-7-13
GH: 02051811 Pogonia ophioglossoides (Linnaeus) Ker Gawler Canada: Ontario Bruce Peninsula, Lyall Island P. V. Krotkov 8912 1934-7-12
GH: 02302794 Spiranthes romanzoffiana Chamisso Canada: Ontario Stokes Bay P. V. Krotkov 8913 1934-8-3
Pinaceae
GH: 00395421 Abies balsamea (Linnaeus) Miller Canada: Ontario [data not captured] P. V. Krotkov 8603 1934-5-29
Plantaginaceae
GH: 02212939 Chelone glabra Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9381 1934-8-17
GH: 02000919 Linaria vulgaris Miller Canada: Ontario [data not captured] P. V. Krotkov 9386 1934-7-24
GH: 01804867 Veronica americana Schweinitz ex Bentham Canada: Ontario [data not captured] P. V. Krotkov 9395 1934-6-11
GH: 01805202 Veronica anagallis-aquatica Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9394 1934-6-25
GH: 01812031 Veronica verna Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9396 1934-6-12
Poaceae
GH: 01653816 Andropogon gerardi Vitman Canada: Ontario [data not captured] P. V. Krotkov 8661 1934-8-16
GH: 01814758 Sorghastrum nutans (Linnaeus) Nash Canada: Ontario [data not captured] P. V. Krotkov 8732 1934-8-16
GH: 01814757 Sorghastrum nutans (Linnaeus) Nash Canada: Ontario [data not captured] P. V. Krotkov 8732 1934-8-16
Polygonaceae
GH: 02364322 Persicaria amphibia (Linnaeus) Delarbre Canada: Ontario [data not captured] P. V. Krotkov 8992 1934-7-12
GH: 02364213 Persicaria amphibia (Linnaeus) Delarbre Canada: Ontario [data not captured] P. V. Krotkov 8985 1934-8-20
GH: 02363161 Persicaria hydropiperoides (Michaux) Small Canada: Ontario [data not captured] P. V. Krotkov 8989 1934-8-13
GH: 02363652 Persicaria lapathifolia (Linnaeus) Delarbre Canada: Ontario [data not captured] P. V. Krotkov 8990 1934-8-15
GH: 02363635 Persicaria lapathifolia (Linnaeus) Delarbre Canada: Ontario [data not captured] P. V. Krotkov 8990 1934-8-15
GH: 02362154 Persicaria maculosa Gray Canada: Ontario [data not captured] P. V. Krotkov 8994 1934-7-21
GH: 02362627 Persicaria punctata (Elliott) Small Canada: Ontario [data not captured] P. V. Krotkov 8996 1934-7-23
GH: 02362615 Persicaria punctata (Elliott) Small Canada: Ontario [data not captured] P. V. Krotkov 8997 1934-8-15
GH: 02361621 Polygonum aviculare Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 8986 1934-7-13
GH: 02361640 Polygonum aviculare Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 8986 1934-7-13
GH: 02361920 Polygonum aviculare depressum (R. Meissner) Arcangeli Canada: Ontario [data not captured] P. V. Krotkov 8987 1934-8-22
GH: 02360120 Polygonum buxiforme Small Canada: Ontario [data not captured] P. V. Krotkov 8987 1934-8-22
GH: 02006156 Rumex acetosella Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 8999 1934-6-4
GH: 02006966 Rumex crispus Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9000 1934-7-3
GH: 02005614 Rumex obtusifolius Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9002 1934-7-9
Potamogetonaceae
GH: 00449493 Potamogeton amplifolius Tuckerman Canada: Ontario [data not captured] P. V. Krotkov 8629 1934-7-14
Pucciniaceae
FH: 00873433 Gymnosporangium corniculans Kern Canada: Ontario Stokes Bay, Bruce Point P. V. Krotkov 1934-6-6
Rubiaceae
GH: 02359508 Galium brevipes Fernald & Wiegand Canada: Ontario [data not captured] P. V. Krotkov 9413 1934-7-22
GH: 02138161 Galium lanceolatum (Torrey) Torrey Canada: Ontario [data not captured] P. V. Krotkov 9409 1934-7-9
GH: 02138160 Galium lanceolatum (Torrey) Torrey Canada: Ontario [data not captured] P. V. Krotkov 9409 1934-7-9
GH: 02138415 Galium mollugo Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9410 1934-6-30
GH: 02140750 Galium sp. Canada: Ontario [data not captured] P. V. Krotkov 9415 1934-7-14
GH: 02139408 Galium tinctorium Linnaeus Canada: Ontario [data not captured] P. V. Krotkov 9414 1934-7-24
GH: 02140205 Galium triflorum Michaux Canada: Ontario [data not captured] P. V. Krotkov 9411 1934-7-17
Sparganiaceae
GH: 00947151 Sparganium androcladum (Engelmann) Morong Canada: Ontario Bruce Peninsula; Spring Creek P. V. Krotkov 8622 1934-8-14
Urticaceae
GH: 02170276 Laportea canadensis (Linnaeus) Weddell Canada: Ontario [data not captured] P. V. Krotkov 8976 1934-8-13
GH: 02171257 Urtica dioica gracilis (Aiton) Selander Canada: Ontario [data not captured] P. V. Krotkov 8979 1934-7-24