Acanthaceae: Acanthus spinosus , Anisacanthus wrightii (6), Aphelandra squarrosa (2), Barleria repens (4), Barleria saxatilis (3), Justicia americana (3), Justicia brandegeeana (3), Justicia ovata v. lanceolata , Ruellia amoena (2), Ruellia nudiflora (3), Ruellia sp. (10), Strobilanthes dyeranus , Thunbergia alata (4)

Aceraceae: Acer grandidentatum (4), Acer negundo (4), Acer palmatum , Acer platanoides (3), Acer rubrum (4), Acer saccharum (2), Acer sp. (2)

Acoraceae: Acorus calamus (2)

Agavaceae: Agave lecheguilla (6), Agave scabra (11), Agave victoria-reginae , Agave virginica (3), Beaucarnea recurvata , Cordyline terminalis , Dasylirion leiophyllum , Hesperaloe parviflora (4), Manfreda maculosa (4), Manfreda sp. , Nolina erumpens (2), Nolina sp. (3), Sansevieria sp. , Yucca carnerosana (7), Yucca elata (3), Yucca elephantipes , Yucca louisianensis (5), Yucca rostrata (4), Yucca sp. (8)

Aizoaceae: Aptenia cordifolia , Delosperma cooperi , Delosperma sutherlandii , Lampranthus multiradiatus (2), Lampranthus multiseriatus (2), Lampranthus roseus [id not certain] (2), Lampranthus zeyheri , Lithops sp. (2), Mesembryanthemum sp. , Mesembryanthemum sp. (2)

Alismataceae: Sagittaria graminea (4), Sagittaria sp. (7)

Alliaceae: Allium kochii (5), Allium vineale (6)

Aloeaceae: Aloe barbadensis (2), Aloe ciliaris (2), Aloe dichotoma (3), Aloe ferox (3), Aloe plicatilis , Aloe sp. , Aloe vera , Haworthia limifolia

Alstroemeriaceae: Alstroemeria pelegrina

Amaranthaceae: Alternanthera caracasana , Amaranthus chlorostachys , Amaranthus cruentus , Amaranthus hypochondriacus (5), Amaranthus spinosus (3), Celosia cristata , Froelichia sp. , Gomphrena globosa (5), Iresine herbstii (5)

Amaryllidaceae: Agave sisalana , Agave sp. (3), Clivia miniata , Galanthus nivalis (5), Hymenocallis liriosme (2), Leucojum roseus (2), Narcissus hybrid (2)

Anacardiaceae: Anacardium occidentale (8), Mangifera indica , Pistacia chinensis (3), Pistacia lentiscus , Rhus aromatica (5), Rhus glabra , Rhus succedanea , Rhus trilobata , Rhus vernix , Rhus virens (5), Toxicodendron radicans (8)

Anemiaceae: Lygodium sp. (8)

Angiopteridaceae: Angiopteris erecta (8)

Annonaceae: Asimina triloba , Cananga odorata (2), Polyalthia longifolia , Polyalthia sclerophylla

Apiaceae: Aethusa cynapium , Ammi majus , Ammoselinum butleri (2), Anethum graveolens (9), Angelica archangelica (2), Anthriscus sylvestris (5), Apium graveolens (3), Apium graveolens var. dulce , Archangelica officinalis , Arracacha xanthorrhiza , Berula erecta , Bifora americana (2), Bowlesia incana (5), Bupleurum falcatum , Bupleurum rotundifolium , Carum carvi (2), Centella asiatica (6), Chaerophyllum bulbosum , Chaerophyllum tainturieri , Chaerophyllum tainturieri var. dasycarpum , Chaerophyllum tainturieri var. tainturieri , Cicuta maculata (3), Cicuta maculata var. bolanderi (2), Cicuta mexicana , Cicuta virosa , Conium maculatum (6), Coriandrium sativum (4), Coriandrum sativum (6), Cuminum cyminum (3), Cyclospermum leptophyllum (2), Cymopterus montanus , Cynosciadium digitatum (2), Daucosma laciniatum (2), Daucus carota (7), Daucus pusillis , Daucus pusillus , Dorema ammoniacum , Eryngium amethystinum , Eryngium hookeri (5), Eryngium integrifolium (4), Eryngium leavenworthii (6), Eryngium nasturtiifolium (2), Eryngium prostratum (3), Eryngium yuccifolium (11), Ferula galbaniflua , Ferula scorodosma , Foeniculum capillaceum , Foeniculum vulgare , Foeniculum vulgare var. dulce (2), Heracleum lanatum (2), Heracleum mantegazzianum , Heracleum maximum , Hydrocotyle umbellata (2), Hydrocotyle bonariensis , Hydrocotyle ranunculoides , Hydrocotyle umbellata , Hydrocotyle verticillata (2), Imperatoria ostruthium , Levisticum officinale (2), Liguisticum grayii (2), Limnosciadium pinnatum (3), Limnosciadium pumilium (2), Limnosciadium pumilum , Oenanthe phellandrium , Oxypolis rigidior (4), Pastinaca sativa (3), Petroselinum crispum (3), Pimpinella anisum (6), Pimpinella saxifraga , Polytaenia nuttallii (9), Polytaenia nuttallii [id not certain] (2), Polytaenia sp. (2), Polytaenia texana (2), Ptilimnium capillaceum (2), Ptilimnium costatum (2), Ptilimnium nuttallii (2), Ptilimnium texense (3), Sanicula canadensis (5), Scandix pecten-veneris , Spermolepis divaricata (2), Spermolepis echinata (2), Spermolepis inermis (2), Tauschia texana (2), Thaspium trifoliatum , Torilis arvensis (2), Torilis nodosa (7), Trepocarpus aethusae (4), Zizia aurea (2)

Apocynaceae: Acokanthera abyssinica , Adenium obesum (2), Adenium obseum , Allamanda cathartica 'Hendersonii' (2), Aspidosperma quebracho-blanco , Carissa grandiflora (2), Catharanthus roseus (6), Cerbera lactaria , Cerbera odollam , Cerbera tanghin , Landolphia comorensis , Landolphia watsoniana , Mandevilla sanderi (2), Mandevilla sanderi 'Scarlet Pimpernel' , Nerium oleander (3), Nerium oleander 'Album' , Nerium oleander 'Roseum' , Pachypodium sp. (2), Plumeria obtusa (2), Plumeria pudica , Plumeria rubra forma acutifolia , Plumeria rubra forma tricolor , Plumeria rubra hybrid (2), Plumeria rubra Singapore hybrid , Strophanthus hispidus , Urceola elastica , Vinca major (5), Vinca minor (5), Willughbeia firma (5)

Aponogetonaceae: Aponogeton sp. (4)

Aquifoliaceae: Ilex aquifolium , Ilex cornuta 'Burfordii' (2), Ilex decidua (6), Ilex opaca (2), Ilex paraguariensis , Ilex vomitoria (13)

Araceae: Acorus calamus , Alocasia macrorrhiza , Anthrophyum sp. , Anthurium andraeanum , Anthurium sp. (2), Arisaema dracontium , Arismaea triphyllum (2), Arum italicum (4), Arum maculatum (3), Caladium sp. (5), Peltandra virginica (2), Philodendron 'Santa Leopoldina' , Pistia stratiotes (4), Spathiphyllum 'Clevelandii' , Spathiphyllum sp. (2), Symplocarpus foetidus , unknown genus [id not certain] , Zantedeschia aethiopica

Araliaceae: Aralia spinosa , Hedera helix , Opolopanax horridum , Panax trifolius , Schefflera actinophylla (2), Tetrapanax papifera (2)

Araucariaceae: Agathis australis , Araucaria bidwillii (2), Araucaria columnae (2)

Arecaceae: Areca catechu (3), Astrocaryum sciophylum , Calamus draco , Caryota mitis , Chaemaerops humilis , Coccothrinax argentata (3), Coccothrinax crinita , Cocos nucifera (8), Copernicia macroglossa , Elaeis guineensis (3), Livistona chinensis , Metroxylon saga , Metroxylon sagu , Phoenix canariensis , Sabal minor , Sabal texana [id not certain] , Serenoa repens , unknown genus [id not certain] (3), Washingtonia robusta (2)

Aristolochiaceae: Aristolochia clematis (2), Aristolochia elegans , Aristolochia erecta , Aristolochia sp. (2), Asarum canadense (2), Asarum europaeum , Hexastylis arifolia

Asclepiadaceae: Asclepias amplexicaulis (4), Asclepias asperula (4), Asclepias curassavica (7), Asclepias incarnata (4), Asclepias oenotherioides , Asclepias oenotheroides (3), Asclepias sp. (7), Asclepias speciosa (2), Asclepias syriaca (2), Asclepias tuberosa (7), Asclepias verticillata (3), Asclepias viridis (7), Ceropegia woodii (5), Hoya kerrii (2), Hoya sp. , Matelea cynanchoides (4), Matelea denticulata , Matelea gonocarpa , Sarcostemma sp. , Stapelia gigantea (2), Stapelia sp. , Vincetoxicum hirundinaria

Asparagaceae: Asparagus officinalis

Aspleniaceae: Cyrtomium falcatum

Asteliaceae: Cordyline stricta (2)

Asteraceae: unidentified , Achillea millefolium (10), Achillea oxyloba , Agoseris alpestre , Ambrosia artemisiifolia , Ambrosia psilostachya (4), Ambrosia trifida (3), Anacyclus pyrethrum , Antennaria fallax (3), Antennaria plantaginifolia , Anthemis arvensis , Anthemis cotula , Anthemis nobilis , Argyroxiphium sandwicense (2), Arnica chamissonis ssp. foliosa , Arnica latifolia (3), Arnica montana (2), Artemisia absinthium , Artemisia cina , Artemisia vulgaris (2), Aster alpinus , Aster bellidiastrum (4), Aster lateriflorus (3), Baccharis halimifolia , Baccharis texana , Baileya multiradiata (2), Bellis annua , Bellis bernardii (2), Bellis perennis (5), Bellium bellidioides , Bidens laevis (3), Bidens sp. , Boltonia diffusa (4), Bradburia hirtella (6), Cacalia atriplicifolia , Cacalia plantaginea (4), Calendula officinalis (2), Calyptocarpus vialis (3), Carduus crispus , Centaurea jacea (s.l.) , Centaurea macrocephala , Chaetopappa asteroides (3), Chaetopappa asteroides. , chamomile , Chamomilla recutita (2), Chrysactinia mexicana (3), Chrysanthemum cinerarifolium (3), Chrysanthemum cinerariifolium , Chrysanthemum inodorum , Chrysanthemum leucanthemum (3), Chrysanthemum marschallii , Chrysanthemum parthenium , Chrysanthemum roseum , Chrysothamnus nauseosus (2), Cichorium intibus , Cichorium intybus , Cirsium coloradense (3), Cirsium engelmannii , Cirsium eriophorum , Cirsium erisithales , Cirsium horridulum (8), Cirsium sp. (13), Cirsium texanum , Cirsium vulgare , Cnicus benedictus , Conyza squarrosa , Coreopsis basalis (3), Coreopsis grandiflora (5), Coreopsis sp. , Coreopsis tinctoria (2), Cynara cardunculus (2), Dendranthemum hybrid (formerly in Chrysanthemum) , Doronicum columnae , Echinacea angustifolia (2), Echinacea pallida , Echinacea purpurea (3), Echinacea purpurea "White Swan" , Echinacea sp. (7), Echinops persicus (2), Elephantopus tomentosus [id not certain] , Engelmannia pinnatifida (3), Erigeron peregrinus , Erigeron perigrinus , Erigeron philadelphicus , Erigeron sp. (4), Erigeron sp. [id not certain] (3), Eupatorium coelestinum (2), Eupatorium compositifolium (2), Eupatorium serotinum (4), Evax verna (2), Flourensia cernua , Gaillardia aestivalis (4), Gaillardia amblyodon , Gaillardia pulchella (7), Gaillardia suavis , Grindelia robusta , Grindelia sp. (3), Gutierrezia sarothrae [id not certain] , Gynura aurantiaca (2), Helenium amarum , Helianthus annuus (10), Helianthus hirsutus (8), Helianthus tuberosus , Heterotheca latifolia (4), Heterotheca pilosa (2), Hieracium aurantiacum , Homogyne alpina , Hymenopappus scabiosaeus (5), Hymenopappus tenuifolius (2), Hymenoxys grandiflora [id not certain] , Hymenoxys scaposa , Inula helenium , Iva annua (7), Krigia cespitosa (2), Krigia sp. (5), Lactuca virosa , Leontopodium alpinum , Leucanthemopsis alpinum , Liatris cymosa (5), Liatris elegans (4), Liatris microcephala , Liatris mucronata (2), Liatris punctata (3), Liatris squarrosa (11), Ligularia dentata , Lindheimera texana (3), Lygodesmia texana (7), Marshallia caespitosa (3), Matricaria chamomilla , Matricaria maritima , Mikania scandens (2), Palafoxia reverchonii , Palafoxia rosea (4), Parthenium argentatum (2), Petasites hybridus , Pinaropappus roseus (3), Pyrrhopappus sp. (2), Pyrrhopappus grandiflorus , Ratibida columnifera (9), Rudbeckia grandiflora (6), Rudbeckia hirta (5), Rudbeckia laciniata [id not certain] (4), Senecio ampullaceus (2), Senecio aureus , Senecio cruentus , Senecio nemorensis fuchsii , Senecio rowleyanus , Senecio sp. , Senecio [id not certain] , Silphium radula (7), Silphium terebinthinaceum , Solidago canadensis , Solidago sp. (3), Sonchus asper (2), Tanacetum vulgare , Taraxacum officinale (8), Taraxacum sp. , Taraxacum sp. [id not certain] , Thelesperma sp. , Tragopogon dubius (2), Tragopogon sp. (3), Tussilago farfara (12), unknown (5), unknown genus (Gutierrezia?) (2), unknown genus [id not certain] , Verbesina encelioides , Verbesina virginica (5), Vernonia baldwinii (7), Vernonia texana (2), Viguiera stenoloba (2), Xanthium strumarium (3), Zinnia sp. , Zinnia violacea

Azollaceae: Azolla caroliniana

Balsaminaceae: Impatiens capensis (2), Impatiens noli-tangere (2), Impatiens pallida (3), Impatiens parviflora (2)

Basellaceae: Basella sp. (3), Ullucus tuberosus (3)

Bataceae: Batis maritima (3)

Begoniaceae: Begonia sp. (5), Begonia sp.--Rex type (2)

Berberidaceae: Berberis bealei , Berberis nervosa , Berberis repens (3), Berberis sp. (3), Berberis trifoliolata (5), Berberis vulgaris (2), Podophyllum peltatum (11), Vancouveria hexandra (11)

Betulaceae: Alnus glutinosa , Alnus rubra (2), Alnus serrulata (4), Betula lenta , Betula nigra (8), Betula occidentalis , Betula pendula (6)

Bignoniaceae: Bignonia capreolata (4), Campsis radicans (14), Catalpa sp. (2), Chilopsis linearis (3), Crescentia cujete , Cybistax donnell-smithii (=Tabebuia donnel-smithii) , Jacaranda mimosaefolia (4), Kigelia pinnata , Pyrostegia venusta , Spathodea campanulata , Spathodea campanulata forma aurea (2), Stereospermum fimbriatum , Tabebuia chrysotricha , Tecoma capensis (2), Tecoma stans (2)

Bixaceae: Bixa orellana (5)

Blechnaceae: Woodwardia areolata (5)

Bombacaceae: Ceiba pentandra (2), Durio zibethinus , Ochroma pyramidale

Boraginaceae: Anchusa arvensis (2), Anchusa officinalis (5), Borago officinalis (3), Coldenia greggii (3), Cordia boissieri (3), Cordia sebestena (2), Echium vulgare , Ehretia anacua , Hackelia sp. (3), Heliotropium arborescens , Heliotropium indicum , Lithospermum incisum , Lithospermum multiflorum [id not certain] (2), Macrotomia cephalotes , Mertensia sp. (2), Mertensia virginica (2), Myosotis alpestris , Onosmodium bejariense (3), Symphytum officinale (4)

Brassicaceae: Alliaria petiolata (4), Arabidopsis thaliana , Arabis petiolaris (4), Arabis pumila , Arabis sp. [id not certain] , Berteroa incana (3), Biscutella laevigata , Brassica napus (2), Brassica napus var. napus (4), Brassica nigra (3), Brassica oleracea (10), Brassica oleracea var. gongyloides , Brassica oleraceae , Capsella bursa-pastoris (2), Cardamine pratensis (2), Cochlearia officinalis , Dentaria laciniata (2), Descurainia pinnata (3), Draba asprella , Draba verna , Draba [id not certain] , Erodium corsicum , Erysimum asperum (2), Erysimum asperum [id not certain] , Erysimum capitatum (4), Lepidium virginicum (4), Lesquerella argyraea [id not certain] (3), Lesquerella densiflora (2), Lesquerella sp. , Lobularia maritima , Lunaria annua (11), Lunaria rediviva (2), Neobeckia aquatica (3), Nerisyrenia camporum (3), Raphanus sativa , Sinapis alba , Stanleya pinnata (4), Streptanthus cordatus [id not certain] (2), Thlaspi arvense , Thlaspi rotundifolium

Bromeliaceae: Aechmea fasciata , Aechmea melinonii [id not certain] , Aechmea mertensii , Aechmea tocantina , Ananas bracteatus (3), Ananas bracteatus var. striatus , Ananas comosus (8), Ananas comosus 'Variegatus' , Ananas comous , Billbergia sp. (9), Billbergia violacea , Billbergia x windii , Bromelia alta , Bromelia balanse , Guzmania insignis , Guzmania lingulata (2), Guzmania x magnifica (2), Hechtia scariosa (2), miscellaneous (2), Puya raimondii (5), Tillandsia ionantha (3), Tillandsia recurvata (5), Tillandsia usneoides (8), Vriesea pleiosticha , Vriesea splendens (3)

Buddlejaceae: Buddleja davidii (2), Polypremum procumbens (6)

Burseraceae: Boswellia carteri , Canarium commune , Canarium indicum , Commiphora myrrha , Icica icicariba

Buxaceae: Buxus sempervirens , Pachysandra procumbens (2), Pachysandra terminalis (2)

Cabombaceae: Brasenia schreberi (2)

Cactaceae: Astrophytum capricorne , Carnegiea gigantea , Cleistocactus smaragdiflores , Cleistocactus smaragdiflorus (3), Coryphantha dasyacantha , Coryphantha missouriensis (5), Echinocereus dasyacanthus , Echinocereus dubius , Echinocereus enneacanthus , Echinocereus pectinatus [id not certain] (2), Echinocereus stramineus (2), Echinocereus triglochidiatus (5), Echinocereus triglochidiatus [id not certain] (2), Echinopsis multiplex , Ferocactus hamatacanthus , Ferocactus wislizenii (3), Gymnocalycium [id not certain] (3), Lophophora williamsii , Mammalaria elongata , Mammillaria heyderi , Mammillaria pottsii , Neolloydia conoidea , Opuntia engelmannii , Opuntia engelmannii var. lindheimeri (7), Opuntia engelmannii var. linguiformis , Opuntia imbricata (9), Opuntia kleiniae , Opuntia leptocaulis (4), Opuntia macrocentra (3), Opuntia macrocentra [id not certain] (2), Opuntia phaeacantha , Opuntia schottii (2), Opuntia sp. (10), Opuntia violacea (2), Peniocereus greggii , Pereskia sp. (3), Schlumbergera sp. (2), unknown (2)

Caesalpiniaceae: Bauhinia blakeana , Bauhinia galpinii (3), Bauhinia guyanensis , Bauhinia sp. (corniculata ?) , Brownea macrophylla , Caesalpinia ferracea , Caesalpinia gilliesii (4), Caesalpinia pulcherrima , Caesalpinia pulchinia (2), Cassia angustifolia , Cassia grandis , Cassia hybrida , Cassia javanica x C. fistula , Cercis canadensis (4), Chamaecrista fasciculata (15), Delonix regia (3), Eperua falcata , Gleditsia triacanthos (3), Gymnocladus dioicus (2), Parkinsonia aculeata (5), Saraca thaipingensis (2), Senna alata (5), Senna alexandrina , Senna occidentalis , Senna sp. (2), Tamarindus indica (2)

Callitrichaceae: Callitriche heterophylla [id not certain] , Callitriche sp.

Calyceraceae: Calycera sp. (4)

Campanulaceae: Campanula carpatica , Campanula glomerata , Campanula rotundifolia (5), Jasione montana (5), Lobelia canbyi (2), Lobelia cardinalis (5), Lobelia inflata (2), Lobelia puberula , Lobelia reverchonii (4), Lobelia siphilitica , Phyteuma orbiculare , Phyteuma ovatum , Phyteuma sieberi , Platycodon grandiflorus (2), Triodanis perfoliata (2), Triodanis texana (2)

Cannabaceae: Cannabis sativa (10), Humulus lupulus (10)

Cannaceae: Canna indica , Canna x generalis (3)

Capparaceae: Capparis spinosa (2), Cleome gynandra (4), Cleome sp. (2), Polanisia dodecandra (2), Polansia graveolens (2)

Caprifoliaceae: Lonicera japonica (2), Lonicera sempervirens (10), Sambucus nigra (2), Sambucus nigra subsp. canadensis (3), Sambucus racemosa , Symphoricarpos orbiculatus (2), Viburnum acerifolium (2), Viburnum nudum (3), Viburnum rufidulum (6)

Caricaceae: Carica papaya (8)

Caryophyllaceae: unidentified (2), Agrostemma githago (7), Arenaria capillaris (2), Arenaria drummondii (5), Arenaria fendleri [id not certain] (2), Cerastium arvense , Cerastrium glomeratum , Dianthus barbatus (2), Dianthus caryophyllus , Dianthus deltoides (5), Dianthus sylvestris , Gypsophila repens , Hernearia glabra (2), Lychnis coronaria (6), Lychnis flos cuculi , Lychnis flos-cuculi , Minuartia rupestris , Paronychia drummondii (2), Paronychia virginica (2), Saponaria ocymoides , Saponaria officinalis , Silene acaulis (5), Silene gallica (2), Silene polypetala , Silene pusilla , Stellaria holostea (3), Stellaria media (2), Stellaria nemorum (2)

Casuarinaceae: Allocasuarina torulosa , Casuarina cunninghamiana , Casuarina equisetifolia (4), Casuarina nobiles (2)

Celastraceae: Euonymus atropurpureus (2), Euonymus bungeaneus , Euonymus europaeus , Euonymus sp. (4), Mortonia scabrella (2)

Chenopodiaceae: Atriplex canescens (2), Atriplex obovata , Beta vulgaris (2), Chenopodium berlandieri , Chenopodium fremontii , Chenopodium hircinum (4), Chenopodium missouriense , Chenopodium quinoa (28), Chenopodium sp. (5), Chenopodium sp. , Kochia scoparia (3), Salicornia sp. , Salicornia virginica

Cistaceae: Cistus ladaniferus , Helianthemum alpestre , Helianthemum carolinianum (2), Helianthemum rosmarinifolium (2), Lechea sansabeana (2)

Clusiaceae: Garcinia morella , Hypericum crux-andreae , Hypericum hypericoides (2)

Cneoraceae: Cneorum tricoccon (2)

Combretaceae: Terminalia catappa (2), Terminalia phanerophlebia (3), Terminalia phellocarpa (2), Terminalia subspathula (2)

Commelinaceae: Commelina erecta (6), Dichorisandra thyrisiflora (2), Setcreasea sp. (2), Tinantia anomala (5), Tradescantia albiflora (2), Tradescantia gigantea (3), Tradescantia hirsutiflora , Tradescantia ohioensis [id not certain] , Tradescantia sp. (6), Tradescantia subacaulis (2)

Convallariaceae: Convallaria majalis , Maianthemum bifolium (3), Polygonatum multiflorum (3)

Convolvulaceae: Convolvulus arvensis , Convolvulus equitans , Convolvulus scammonia , Convolvulus sp. , Cuscuta obtusiflora v. landulosa , Cuscuta sp. , Dichondra carolinensis (2), Evolvulus nuttallianus (2), Evolvulus sericeus (2), Ipomoea cordatotriloba (3), Ipomoea pes-caprae (3), Ipomoea purga , Ipomoea purpurea (3), Ipomoea sp. (3), Ipomoea trichocarpa (3)

Cornaceae: Cornus alba cv. , Cornus drummondii (3), Cornus florida (7), Cornus mas (3), Cornus officinalis (4), Cornus sanguinea , Cornus stolonifera cv.

Corylaceae: Carpinus betulus , Corylus avellana (9)

Crassulaceae: Clementsia rhodantha (5), Cotyledon orbiculata (3), Echeveria sp. (2), Echeveria X imbricata [id not certain] , Graptopetalum paraguayense , Kalanchoe blossfeldiana (4), Kalanchoe fedtschenkoi [id not certain] , Sedum acre (2), Sedum lanceolatum , Sedum nuttallianum (4), Sedum roseum (2), Sedum ternatum , Sedum weinbergii [id not certain] , Sempervivum montanum (3), Tylecodon paniculatus (2)

Cucurbitaceae: Bryonia dioica (2), Citrullus colocynthis , Citrullus lanatus (2), Cucumis melo (3), Cucumis sativa (3), Cucumis sativus (5), Cucurbita argyrosperma (2), Cucurbita ficifolia , Cucurbita maxima (4), Cucurbita mixta , Cucurbita moschata , Cucurbita pepo (12), Cucurbita sp. (8), Cucurbita texana (6), Ecballium elaterium (2), Lagenaria siceraria (4), Melothria pendula (2)

Cunoniaceae: Vesselowskya rubifolia (2)

Cupressaceae: Callitris quadrivalvis , Cupressus arizonica (3), Juniperus communis (4), Juniperus deppeana (3), Juniperus flaccida (4), Juniperus oxycedrus , Juniperus pinchotii (2), Juniperus sabina , Juniperus virginiana (2), Thuja occidentalis (2)

Cuscutaceae: Cuscuta sp. (6)

Cyatheaceae: Cyathea australis (2)

Cycadaceae: Cycas revoluta , Cycas revoluta [id not certain] (2), Cycas rumphii , Encephalartos ferox , Zamia furfuracea

Cyperaceae: Carex arenaria , Carex blanda , Carex bushii (3), Carex cephalophora (2), Carex cherokeensis , Carex distans (2), Carex flaccosperma (2), Carex lupulina , Carex picta (4), Carex planostachys (4), Carex sp. (4), Carex spectabilis , Cyperus alternifolius (2), Cyperus globulosus (2), Cyperus papyrus , Cyperus pseudovegatus (2), Cyperus rotundus (2), Cyperus sp. , Cyperus strigosus (4), Dulichium arundinaceum , Eleocharis equisetoides (2), Eleocharis montevidensis (2), Eleocharis sp. , Fimbristylis [id not certain] , Fuirena squarrosa , Rhynchospora (Dichromena) colorata (6), Rhynchospora colorata (2), Rhynchospora corniculata [id not certain] , Rhynchospora glomerata [id not certain] , Rhynchospora sp.

Cyrillaceae: Cliftonia monophylla

Dennstaedtiaceae: Pteridium aquilinum , Sphenomeris chusana

Dicksoniaceae: Dicksonia antarctica

Didiereaceae: Alluaudia procera , Didierea trollii

Dilleniaceae: Hibbertia cuneifolia (4)

Dioscoreaceae: Dioscorea bulbifera , Dioscorea caucasica (2), Dioscorea quaternata (2), Dioscorea villosa (3)

Dipsacaceae: Dipsacus fullonum (4), Knautia arvensis (4)

Dipterocarpaceae: Dipterocarpus retusus , Dryobalanops aromatica

Droseraceae: Dionaea muscipula (6), Drosera annua , Drosera brevifolia (2), Drosera capensis (3), Drosera capillaris (6), Drosera rotundifolia (2), Drosera rotundifolia [id not certain] , Drosera sp.