A - Alk
| Abelmoschus esculentes | Okra | Okra | Malvaceae |
| Abutilon theophrasti | Schönmalve Lindenblättrige | Indian Mallow | Malvaceae |
| Abutilon x hybridum | Schönmalve Hybrid | Chinese Bellflower | Malvaceae |
| Acacia baileyana | Akazie Cootamundra | Cootamundra Wattle | Mimosaceae |
| Acacia cyclops | Akazie Zyklopen | Red- eyed Wattle | Mimosaceae |
| Acacia dealbata | Akazie Silber | Silver Wattle | Mimosaceae |
| Acacia decurrens | Akazie Herablaufende | Early Green Wattle | Mimosaceae |
| Acacia longifolia | Akazie Langblättrige | Sallow Wattle | Mimosaceae |
| Acacia melanoxylon | Akazie Schwarzholz | Blackwood Wattle | Mimosaceae |
| Acacia mearnsii | Akazie Schwarze | Black Wattle | Mimosaceae |
| Acacia pycnantha | Akazie Gold | Golden Wattle | Mimosaceae |
| Acacia retinodes | Akazie Immergrüne | Water Wattle | Mimosaceae |
| Acacia saligna | Akazie Weidenblättrige | Blue- leaved Wattle | Mimosaceae |
| Acacia sophorae | Akazie Küsten | Coastal Wattle | Mimosaceae |
| Acacia verticillata | Akazie Wirtelige | Prickly Wattle | Mimosaceae |
| Acalypha virginica | Nesselblatt Virginisches | Virginia Threeseed Mercury | Euphorbiaceae |
| Acantholimon aegaeum | Igelpolster Ägäis | Aegean Sea Lavender | Plumbaginaceae |
| Acantholimon albanicum | Igelpolster Albanisches | Albanian Sea- Lavender | Plumbaginaceae |
| Acantholimon androsaceum | Igelpolster Kurzschäftiges | Thorny Sea- Lavender | Plumbaginaceae |
| Acantholimon graecum | Igelpolster Griechisches | Greek Sea- Lavender | Plumbaginaceae |
| Acanthoprasium frutescens | Strauchschwarznessel Seealpen | Shrubby Horehound | Lamiaceae |
| Acanthus hungaricus | Akanthus Ungarischer | Hungarian Bear's Breeches | Acanthaceae |
| Acanthus mollis | Akanthus Weicher | Oyster Plant | Acanthaceae |
| Acanthus spinosus | Akanthus Dorniger | Spiny Bear's Breeches | Acanthaceae |
| Acer campestre | Ahorn Feld | Hedge Maple | Sapindaceae |
| Acer cappadocicum | Ahorn Kolchischer | Cappadocian Maple | Sapindaceae |
| Acer granatense | Ahorn Granada | Granada Maple | Sapindaceae |
| Acer heldreichii | Ahorn Griechischer | Greek Maple | Sapindaceae |
| Acer hyrcanum | Ahorn Balkan | Granada Maple | Sapindaceae |
| Acer monspessulanum | Ahorn Felsen | Montpellier Maple | Sapindaceae |
| Acer negundo | Ahorn Eschen | Ash- leaved Maple | Sapindaceae |
| Acer opalus | Ahorn Schneeball | Italian Maple | Sapindaceae |
| Acer platanoides | Ahorn Spitz | Norway Maple | Sapindaceae |
| Acer pseudoplatanus | Ahorn Berg | Sycamore Maple | Sapindaceae |
| Acer saccharinum | Ahorn Silber | Silver Maple | Sapindaceae |
| Acer sempervirens | Ahorn Immergrüner | Cretan Maple | Sapindaceae |
| Acer tataricum | Ahorn Tatarischer | Tatar Maple | Sapindaceae |
| Achillea ageratum | Schafgarbe Leberbalsam | Sweet Yarrow | Asteraceae |
| Achillea atrata | Schafgarbe Schwarzrandige | Black Yarrow | Asteraceae |
| Achillea chrysocoma | Schafgarbe Goldhaarige | Golden- hair Yarrow | Asteraceae |
| Achillea clavennae | Schafgarbe Bittere | Silvery Yarrow | Asteraceae |
| Achillea clusiana | Schafgarbe Clusius | Clusius' Yarrow | Asteraceae |
| Achillea clyopeolata | Schafgarbe Goldquirl | Moonshine Yarrow | Asteraceae |
| Achillea collina | Schafgarbe Hügel | Mountain Yarrow | Asteraceae |
| Achillea cretica | Schafgarbe Kretische | Cretan Yarrow | Asteraceae |
| Achillea crithmifolia | Schafgarbe Meerfenchelblättrige | Samphire- leaved Yarrow | Asteraceae |
| Achillea filipendulina | Goldgarbe | Fearnleaf Yarrow | Asteraceae |
| Achillea grandifolia | Schafgarbe Großblättrige | Large- leaved Yarrow | Asteraceae |
| Achillea ligustica | Schafgarbe Ligurische | Ligurian Yarrow | Asteraceae |
| Achillea macrophylla | Schafgarbe Großblättrige | Big Leaf Yarrow | Asteraceae |
| Achillea maritima | Schafgarbe Strand | Cottonweed | Asteraceae |
| Achillea millefolium | Schafgarbe Gewöhnliche | Bristly Yarrow | Asteraceae |
| Achillea moschata | Schafgarbe Moschus | Musk Yarrow | Asteraceae |
| Achillea nana | Schafgarbe Zwerg | Dwarf Alpine Yarrow | Asteraceae |
| Achillea nobilis | Schafgarbe Edle | Noble Yarrow | Asteraceae |
| Achillea pannonica | Schafgarbe Ungarische | Pannonian Yarrow | Asteraceae |
| Achillea pratensis | Schafgarbe Wiesen | Meadow Yarrow | Asteraceae |
| Achillea ptarmica | Schafgarbe Sumpf | Marsh Yarrow | Asteraceae |
| Achillea pyrenaica | Schafgarbe Pyrenäen | Pyrenean Yarrow | Asteraceae |
| Achillea roseoalba | Schafgarbe Blassrosa | Pink- white Yarrow | Asteraceae |
| Achillea salicifolia | Schafgarbe Weidenblättrige | Willowleaf Yarrow | Asteraceae |
| Achillea santolinoides | Schafgarbe Heiligenkrautähnliche | Santolina- like Yarrow | Asteraceae |
| Achillea setacea | Schafgarbe Feinblättrige | Bristly Yarrow | Asteraceae |
| Achillea tomentosa | Schafgarbe Filzige | Wooly Yarrow | Asteraceae |
| Achillea umbellata | Schafgarbe Doldige | Umbellate Yarrow | Asteraceae |
| Achyranthes aspera | Spreublume Raue | Prickly Chaff Flower | Amaranthaceae |
| Achyranthes sicula | Spreublume Sizilianische | Sicilian Chaff Flower | Amaranthaceae |
| Achyrophorus lavigatus | Ferkelkraut Glattes | Smooth Cat's Ear | Asteraceae |
| Achyrophorus rutea | Ferkelkraut Sierra de Ruta | Sierra de Ruta Cat's Ear | Asteraceae |
| Achyrophorus stuessyi | Ferkelkraut Stuessys | Stussy's Cat's Ear | Asteraceae |
| Achyrophorus valdesii | Ferkelkraut Mittelmeer | Mediterranean Cat's Ear | Asteraceae |
| Acis autumnalis | Knotenblume Herbst | Snowflake Autumn | Amaryllidaceae |
| Acis fabrei | Knotenblume Fabre | - | Amaryllidaceae |
| Acis ionica | Knotenblume Ionische | Snowflake Ionian | Amaryllidaceae |
| Acis longifolia | Knotenblume Langblättrige | Snowflake Long leaved | Amaryllidaceae |
| Acis nicaeensis | Knotenblume Nizza | Snowflake Nice | Amaryllidaceae |
| Acis rosea | Knotenblume Rosafarbene | Snowflake Valentine | Amaryllidaceae |
| Acis trichophylla | Knotenblume Dreiblättrige | Snowflake Three leaved | Amaryllidaceae |
| Acis valentina | Knotenblume Valentins | Snowflake Ionian | Amaryllidaceae |
| Aconitum angustifolium | Eisenhut Schmalblättriger | Narrow- leaved Monkshood | Amaryllidaceae |
| Aconitum anthora | Eisenhut Giftheil | Yellow Monkshood | Amaryllidaceae |
| Aconitum burnatii | Eisenhut Burnats | Burnat's Monkshood | Amaryllidaceae |
| Aconitum carmichaelii | Eisenhut Chinesischer | Chinese Monkshood | Amaryllidaceae |
| Aconitum castellanum | Eisenhut Kastilischer | Castilian Monkshood | Amaryllidaceae |
| Aconitum corsicum | Eisenhut Korsischer | Corsican Monkshood | Amaryllidaceae |
| Aconitum degenii | Eisenhut Degens | Degen's Monkshood | Amaryllidaceae |
| Aconitum degenii ssp rhaeticum | Eisenhut Bündner | Rhaetian Monkshood | Amaryllidaceae |
| Aconitum lycoctonum | Eisenhut Wolfs | Yellow Wolfsbane | Amaryllidaceae |
| Aconitum napellus | Eisenhut Blauer | Blue Monkshood | Amaryllidaceae |
| Aconitum nevadense | Eisenhut Sierra Nevada | Sierra Nevada Monkshood | Amaryllidaceae |
| Aconitum pentheri | Eisenhut Penthers | Penther's Monkshood | Amaryllidaceae |
| Aconitum pilipes | Eisenhut Behaarter | Hairy Monkshood | Amaryllidaceae |
| Aconitum plicatum | Eisenhut Sudeten | Plicate Monkshood | Amaryllidaceae |
| Aconitum superbum | Eisenhut Prächtiger | Magnificent Monkshood | Amaryllidaceae |
| Aconitum toxicum | Eisenhut Gift | Poison Monkshood | Amaryllidaceae |
| Aconitum variegatum | Eisenhut Bunter | Variegated Monkshood | Amaryllidaceae |
| Aconitum vivantii | Eisenhut Vivants | Vivant's Monkshood | Amaryllidaceae |
| Acorus calamus | Kalmus Indischer | Indian Calamus | Acoraceae |
| Actaea europaea | Wanzenkraut Europäisches | European Bugbane | Ranunculaceae |
| Actaea racemosa | Silberkerze Trauben | Black Bugbane | Ranunculaceae |
| Actaea spicata | Christophskraut Schwarzfrüchtiges | Black Baneberry | Ranunculaceae |
| Adenophora liliifolia | Schellenblume Lilienblättrige | Common Ladybell | Campanulaceae |
| Adenostyles alliariae | Alpendost Grauer | Common Adenostyles | Asteraceae |
| Adenostyles alpina | Alpendost Kahler | Glabrous Adenostyles | Asteraceae |
| Adenostyles leucophylla | Alpendost Filziger | Lanate Adenostyles | Asteraceae |
| Adiantum capillus- veneris | Frauenhaarfarn | Venus- hair Fern | Pteridaceae |
| Adonis aestivalis | Adonisröschen Sommer | Summer Pheasant's Eye | Ranunculaceae |
| Adonis annua | Adonisröschen Herbst | Annual Pheasant's Eye | Ranunculaceae |
| Adonis astivalis var. citrinus | Adonisröschen Zitronengelbes Sommer | Yellow Summer Pheasant's Eye | Ranunculaceae |
| Adonis cretica | Adonisröschen Kretisches | Cretan Pheasant's Eye | Ranunculaceae |
| Adonis cyllenea | Adonisröschen Mt. Kyllini | Mt. Kyllini Pheasant's Eye | Ranunculaceae |
| Adonis distorta | Adonisröschen Apenninen | Apennine Pheasant's Eye | Ranunculaceae |
| Adonis flammea | Adonisröschen Flammen | Flame Pheasant's Eye | Ranunculaceae |
| Adonis microcarpa | Adonisröschen Kleinfrüchtiges | Small fruites Pheasant's Eye | Ranunculaceae |
| Adonis pyrenaica | Adonisröschen Pyrenäen | Pyrenean Pheasant's Eye | Ranunculaceae |
| Adonis vernalis | Adonisröschen Frühlings | Spring Pheasant's Eye | Ranunculaceae |
| Aegilops biuncialis | Walch Zweizoll | Two- inch Goatgrass | Poaceae |
| Aegilops comosa | Walch Schopfiger | Comose Goatgrass | Poaceae |
| Aegilops cylindrica | Walch Zylinder | Jointed Goatgrass | Poaceae |
| Aegilops geniculata | Walch Geknieter | Ovare Goatgrass | Poaceae |
| Aegilops markgrafii | Walch Geschwänzter | Long- tailed Goatgrass | Poaceae |
| Aegilops neglecta | Walch Übersehener | Three- Awned Goatgrass | Poaceae |
| Aegilops peregrina | Walch Fremder | Foreign Goatgrass | Poaceae |
| Aegilops speltoides | Walch Dinkelähnlicher | Wheat- like Goatgrass | Poaceae |
| Aegilops triuncialis | Walch Dreizoll | Three- inch Goatgrass | Poaceae |
| Aegilops umbellulata | Walch Doldiger | Umbel Goatgrass | Poaceae |
| Aegilops uniaristata | Walch Eingranniger | One- awned Goatgrass | Poaceae |
| Aegilops ventricosa | Walch Bauchiger | Swollen Goatgrass | Poaceae |
| Aegopodium podagraria | Giersch Gewöhnlicher | Bishops Goatweed | Apiaceae |
| Aeonium arboreum | Aeonium Baumartiges | Tree Aeonium | Crassulaceae |
| Aesculus hippocastanum | Rosskastanie Gewöhnliche | Common Horse- Chestnut | Sapindaceae |
| Aesculus pavia | Pavie | Red Buckeye | Sapindaceae |
| Aesculus x carnea | Rosskastanie Fleischrote | Red Horse- Chestnut | Sapindaceae |
| Aetheorhiza bulbosa | Gänsedistel Knollen | Tuberous Hawk's Beard | Sapindaceae |
| Agapanthus praecox | Schmucklilie Frühe | African Lily | Amaryllidaceae |
| Agave americana | Agave Amerikanische | American Agave | Agavaceae |
| Ageratum houstonianum | Leberbalsam Gewöhnlicher | Mexican Paintbrush | Asteraceae |
| Agrimonia eupatoria | Odermennig Kleiner | Common Agrimony | Rosaceae |
| Agrimonia procera | Odermennig Großer | Fragrant Agrimony | Rosaceae |
| Agrostemma githago | Kornrade Gewöhnliche | Common Corncockle | Caryophyllaceae |
| Agrostemma gracile | Kornrade Zierliche | Slender Corncockle | Caryophyllaceae |
| Aichryson laxum | Immergold Lockeres | Tree of Love | Crassulaceae |
| Ainsworthia trachycarpa | Zirmet Raufrüchtiger | Cow Parsnip | Apiaceae |
| Aizoanthemum hispanicum | Eisblume Spanische | Spanish Ice Plant | Apiaceae |
| Aizoon canariense | Eisblume Kanarische | Canary Ice Plant | Apiaceae |
| Ajuga chamaepitys | Günsel Gelber | Yellow Bugle | Lamiaceae |
| Ajuga genevensis | Günsel Genfer | Blue Bugle | Lamiaceae |
| Ajuga iva | Günsel Mittelmeer | Southern Bugle | Lamiaceae |
| Ajuga laxmannii | Günsel Laxmanns | Laxmann's Bugle | Lamiaceae |
| Ajuga orientalis | Günsel Orientalischer | Oriental Bugle | Lamiaceae |
| Ajuga piskoi | Günsel Albanischer | Albanian Bugle | Lamiaceae |
| Ajuga pyramidalis | Günsel Pyramiden | Pyramidal Bugle | Lamiaceae |
| Ajuga reptans | Günsel Kriechender | Common Bugle | Lamiaceae |
| Ajuga salicifolia | Günsel Weidenblättriger | Willow- leaved Bugle | Lamiaceae |
| Ajuga tenorei | Günsel Tenores | Tenore's Bugle | Lamiaceae |
| Albizia julibrissin | Seidenakazie Gewöhnliche | Common Silktree | Mimosaceae |
| Alcea biennis | Stockrose Blasse | Biennal Hollyhock | Malvaceae |
| Alcea heldreichii | Stockrose Heldreichs | Heldreich's Hollyhock | Malvaceae |
| Alcea lavaterifolia | Stockrose Buschmalvenblütige | Lavatera- flowered Hollyhock | Malvaceae |
| Alcea rosea | Stockrose Garten | Common Hollyhock | Malvaceae |
| Alcea rugosa | Stockrose Gelbe | Rugose Hollyhock | Malvaceae |
| Alcea setosa | Stockrose Borstige | Bristly Hollyhock | Malvaceae |
| Alchemilla alpigena | Frauenmantel Kalkalpen | Limestone- Alps Lady's Mantle | Rosaceae |
| Alchemilla alpina | Frauenmantel Alpen | Alpine Lady's Mantle | Rosaceae |
| Alchemilla erythropoda | Frauenmantel Rotstieliger | Dwarf Lady's Mantle | Rosaceae |
| Alchemilla fissa | Frauenmantel Zerschlitzter | Hairless Lady's Mantle | Rosaceae |
| Alchemilla glabra | Frauenmantel Kahler | Smooth Lady's Mantle | Rosaceae |
| Alchemilla glaucescens | Frauenmantel Filz | Waxy Lady's Mantle | Rosaceae |
| Alchemilla hoppeana | Frauenmantel Hoppes | Hoppe's Lady's Mantle | Rosaceae |
| Alchemilla mollis | Frauenmantel Weicher | Garden Lady's Mantle | Rosaceae |
| Alchemilla monticola | Frauenmantel Bergwiesen | Hairy Lady's Mantle | Rosaceae |
| Alchemilla nitida | Frauenmantel Glanz | Silver Lady's Mantle | Rosaceae |
| Alchemilla pallens | Frauenmantel Blassgrüner | Pale Lady's Mantle | Rosaceae |
| Alchemilla pentaphyllea | Frauenmantel Schneetälchen | Cut- leaved Lady's Mantle | Rosaceae |
| Alchemilla subcrenata | Frauenmantel Kerbzahn | Broadtooth Lady's Mantle | Rosaceae |
| Alchemilla vulgaris | Frauenmantel Spitzlappiger | Stary Lady's Mantle | Rosaceae |
| Alchemilla xanthochlora | Frauenmantel Gelbgrüner | Intermediate Lady's Mantle | Rosaceae |
| Alisma gramineum | Froschlöffel Grasblättriger | Narrowleaf Water Plantain | Alismataceae |
| Alisma lanceolatum | Froschlöffel Lanzettblättriger | Lanceleaf Water Plantain | Alismataceae |
| Alisma plantago- aquatica | Froschlöffel Gewöhnlicher | European Water Plantain | Alismataceae |
| Alkanna areolata | Alkanna Kleinfelderige | Areolate Alkanna | Boraginaceae |
| Alkanna calliensis | Alkanna Callies | Callie's Alkanet | Boraginaceae |
| Alkanna corcyrensis | Alkanna Korfu | Corfu Alkanet | Boraginaceae |
| Alkanna graeca | Alkanna Griechische | Greek Alkanet | Boraginaceae |
| Alkanna hellenica | Alkanna Hellenische | Hellenic Alkanet | Boraginaceae |
| Alkanna lutea | Alkanna Gelbe | Yellow Alkanet | Boraginaceae |
| Alkanna methanaea | Alkanna Methana | Methana Alknaet | Boraginaceae |
| Alkanna noneiformis | Alkanna Mönchskrautähnliche | Nonea- like Alkanet | Boraginaceae |
| Alkanna orientalis | Alkanna Orientalische | Oriental Alkanet | Boraginaceae |
| Alkanna pelia | Alkanna Pelion | Pelion Alkanet | Boraginaceae |
| Alkanna pindicola | Alkanna Pindus | Pindus- Alkanet | Boraginaceae |
| Alkanna primuliflora | Alkanna Primelblütige | Primrose- flowered Alkanet | Boraginaceae |
| Alkanna pulmonaria | Alkanna Lungenkrautähnliche | Lungwort- like Alkanet | Boraginaceae |
| Alkanna sandwithii | Alkanna Sandwith | Sandwith's Alkanet | Boraginaceae |
| Alkanna sartoriana | Alkanna Sartoris | Sartori's Alkanet | Boraginaceae |
| Alkanna scardica | Alkanna Balkan | Balkan Alkanet | Boraginaceae |
| Alkanna sieberi | Alkanna Sieber's | Sieber's Alkanet | Boraginaceae |
| Alkanna sfikasiana | Alkanna Sfikas | Sfikas' Alkanet | Boraginaceae |
| Alkanna stribrnyi | Alkanna Stribrnyis | Stribrny's Alkanet | Boraginaceae |
| Alkanna tinctoria | Alkanna Schminkwurz | Dyer's Alkanet | Boraginaceae |