Quelltext der Seite Acer (KeyToNature)

{{DISPLAYTITLE:''Acer'' (KeyToNature)}}{{ZITATFORMAT Kapitälchen}}
{{Key Start
 | title = ''Acer''
 | description = Dieser Schlüssel enthält die in Deutschland wild wachsende und des öfteren in Parks angepflanzten Arten. Ein deutlich einfacherer  Schlüssel mit weniger Arten steht unter „[[Acer / Ahorn (Häufige Arten in Deutschland)|''Acer'' / Ahorn (Häufige Arten in Deutschland)]]“ zur Verfügung.
 | common names = Ahorn
 | parent taxon = Sapindaceae
 | geoscope    = Deutschland und Österreich
 | creators =
 | category = Flora (Schlüssel), Schlüssel aus dem KeyToNature-Projekt
 | audience =
 | source   = [[Bestimmungshilfe für holzige Pflanzen in Deutschland (KeyToNature Urfassung)|Urfassung der Bestimmungshilfe für holzige Pflanzen in Deutschland]]
 | status   = Erstfassung beendet
 | edited by   = Pier Luigi Nimis, Gerd Schmidt, Gregor Hagedorn, Volker John, Walter Gams, Stefano Martellos, Andrea Moro, Sabine von Mering
 | general review by =
 | nomreview  by     =
 | expert review by  =
 | icon = File:Autumn Norway Maple Leaf icon.png
 }}
{{Lead | 1 | Blätter aus 3-5(-7) Teilblättern zusammengesetzt
 | text_en = Leaves compound with 3-5 leaflets.
 | image j = File:Dryades_VAL00060.jpg
 | 2 }}
{{Lead | 1*| Blätter einfach (unzerteilt oder gelappt bis tief eingeschnitten)
 | text_en = Leaves simple but sometimes deeply lobed
 | 3 }}

{{Lead | 2 | Rinde grau; Blattstiele kahl oder mit wenigen kurzen Haaren
 | text_en = Bark grey. Leaf-stalks glabrous or with a few short hairs
 | description = Blüten grünlich.
 | description_en = Flowers greenish.
 | result = Acer negundo
 | result text = ''Acer negundo''
 | result qualifier = L.
 | common names = Eschen-Ahorn
 | image j = File:Dryades_TSB73265.jpg
 }}
{{Lead | 2*| Rinde zimtfarben; Blattstiele mit dichten langen Haaren
 | text_en = Bark cinnamon-coloured. Leaf-stalks with dense long hairs
 | result = Acer griseum
 | result text = ''Acer griseum''
 | result qualifier = {{Smallcaps|(Franch.) Pax}}
 | common names = Zimt-Ahorn
 | image j = File:Dryades_TSB73266.jpg
 }}

{{Lead | 3 (1)| Blätter gelappt bis tief eingeschnitten
 | text_en = Leaves lobed
 | image j = File:Dryades_VAL00029.jpg
 | description = Blüten radiär-symmetrisch, Kronblätter fehlend oder grünlich.
 | description_en = Flowers radially symmetric. Petals absent or greenish.
 | image m = File:Dryades_Acerys.jpg
 | image m width = 200
 | image m height = 50
 | 4 }}
{{Lead | 3*| Blätter nicht gelappt
 | text_en = Leaves not lobed
 | 23 }}

{{Lead | 4 | Blätter in 3-5 Blattlappen geteilt
 | text_en = Leaves with 3-5 main lobes
 | image j = File:Dryades_Datreacinque.jpg
 | 8 }}
{{Lead | 4* | Blätter in mehr als 5 Blattlappen geteilt
 | text_en = Leaves with more than 5 main lobes
 | image j = File:Dryades_Piudicinque.jpg
 | 5 }}

{{Lead | 5 | Blätter tief geteilt (zur Hälfte oder mehr)
 | text_en = Leaves lobed at least halfway to the midrib
 | image j = File:Dryades_Palmyassai.jpg
 | 6 }}
{{Lead | 5*| Blätter weniger als zur Hälfte geteilt
 | text_en = Leaves lobed less than halfway to the midrib
 | image j = File:Dryades_Pocodiviacer.jpg
 | 7 }}

{{Lead | 6 | Blätter grün
 | text_en = Leaves green
 | result = Acer palmatum
 | result text = ''Acer palmatum''
 | result qualifier = {{Smallcaps|Thunb.}} ex {{Smallcaps|Murray}}
 | common names = Fächerahorn
 | image j = File:Dryades_TSB73315.jpg
 }}
{{Lead | 6*| Blätter rot
 | text_en = Leaves red
 | result = Acer palmatum f. atropurpureum
 | result text = ''Acer palmatum'' f. ''atropurpureum'' hort.
 | common names = Roter Fächerahorn
 | image j = File:Dryades_TSB78073.jpg
 }}

{{Lead | 7 (5)| Blätter mit 7-11 Blattlappen; Blütenstände aufrecht
 | text_en = Leaves with 7-11 lobes. Inflorescences erect
 | result = Acer circinatum
 | result text = ''Acer circinatum''
 | result qualifier = {{Smallcaps|Pursh}}
 | common names = Weinblatt-Ahorn
 | image j = File:Dryades_TSB78074.jpg
 }}
{{Lead | 7*| Blätter mit 9-13 Blattlappen; Blütenstände hängend
 | text_en = Leaves with 9-13 lobes. Inflorescences pendent
 | result = Acer japonicum
 | result text = ''Acer japonicum''
 | result qualifier = {{Smallcaps|Murray}}
 | common names = Japanischer Ahorn
 | image j = File:Dryades_TSB78075.jpg
 }}

{{Lead | 8 (4)| Blätter mit 3 Blattlappen
 | text_en = Leaves with 3 lobes
 | image j = File:Dryades_Trelobi.jpg
 | 9 }}
{{Lead | 8*| Blätter mit 5-7 Blattlappen
 | text_en = Leaves with 5-7 lobes
 | image j = File:Dryades_Cinque.jpg
 | 13 }}

{{Lead | 9 | Blattlappen ganzrandig
 | text_en = Margin of leaf-lobes entire
 | result = Acer monspessulanum
 | result text = ''Acer monspessulanum''
 | result qualifier = L.
 | common names = Französischer Ahorn
 | image j = File:Dryades_TSB78076.jpg
 }}
{{Lead | 9*| Blattlappen gezähnt
 | text_en = Margin of leaf-lobes-toothed
 | 10 }}

{{Lead | 10 | Fruchtflügel bilden einen spitzen Winkel miteinander
 | text_en = Fruit-wings forming an acute angle to each other
 | result = Acer ginnala
 | result text = ''Acer ginnala''
 | result qualifier = {{Smallcaps|Maxim.}}
 | common names = Feuer-Ahorn
 | image j = File:Dryades_TSB73347.jpg
 }}
{{Lead | 10*| Fruchtflügel bilden einen stumpfen Winkel miteinander oder stehen lotrecht zum Fruchtstiel
 | text_en = Fruit-wings forming an obtuse angle to each other or perpendicular to the fruit-stalk
 | image j = File:Dryades_Acerpiatty.jpg
 | 11 }}

{{Lead | 11 | Blätter sehr fein gezähnt
 | text_en = Leaves very finely toothed
 | result = Acer forrestii
 | result text = ''Acer forrestii''
 | result qualifier = {{Smallcaps|Diels}}
 | common names = Forrests Ahorn
 }}
{{Lead | 11*| Blätter grob gezähnt
 | text_en = Leaves coarsely toothed
 | 12 }}

{{Lead | 12 | Junge Triebe nicht gräulich blau
 | text_en = Young shoots not glaucous
 | result = Acer pensylvanicum
 | result text = ''Acer pensylvanicum''
 | result qualifier = L.
 | common names = Streifen-Ahorn
 | image j = File:Dryades_TSB78077.jpg
 }}
{{Lead | 12*| Junge Triebe gräulich blau, mit blau-weißem Reif bedeckt
 | text_en = Young shoots glaucous, covered by a rich blue-white bloom
 | result = Acer tegmentosum
 | result text = ''Acer tegmentosum''
 | result qualifier = {{Smallcaps|Maxim.}}
 | common names = Koreanischer Schlangenhaut-Ahorn
 | image j = File:Dryades_TSB72308.jpg
 }}

{{Lead | 13 (8)| Fruchtflügel in einem stumpfen Winkel zueinander oder lotrecht zum Fruchtstiel stehend
 | text_en = Fruit-wings forming an obtuse angle to each other or perpendicular to the fruit-stalk
 | image j = File:Dryades_Acerpiatty.jpg
 | 14 }}
{{Lead | 13*| Fruchtflügel in einem spitzen Winkel zueinander stehend
 | text_en = Fruit-wings forming an acute angle to each other
 | image j = File:Dryades_Acerystretty.jpg
 | 17 }}

{{Lead | 14 | Blattspreite im Durchschnitt kürzer als 10 cm (mindestens 10 Blätter messen; ohne Blattstiel)
 | text_en = Leaves in average <10 cm long (measure at least 10 leaves)
 | result = Acer campestre
 | result text = ''Acer campestre''
 | result qualifier = L.
 | common names = Feldahorn
 | image j = File:Dryades_TSB73348.jpg
 }}
{{Lead | 14*| Blätter im Durchschnitt länger als 10 cm
 | text_en = Leaves in average >10 cm long
 | 15 }}

{{Lead | 15 | Blattlappen ganzrandig
 | text_en = Margin of leaf-lobes entire
 | result = Acer cappadocicum subsp. lobelii
 | result text = ''Acer cappadocicum'' subsp. ''lobelii''
 | result qualifier = {{Smallcaps|(Ten.) Murray}}
 | common names = Lobel-Ahorn
 | image j = File:Dryades_TSB73349.jpg
 }}
{{Lead | 15*| Blattlappen gezähnt
 | text_en = Margin of leaf-lobes toothed 
 | image j = File:Dryades_VR_acer_plata.jpg
 | 16 }}

{{Lead | 16 | Blütenstände aufrecht; Nüsschen flach
 | text_en = Inflorescences upright. Nutlets flat
 | result = Acer platanoides
 | result text = ''Acer platanoides''
 | result qualifier = L.
 | common names = Spitzahorn
 | image j = File:Dryades_TSB77354.jpg
 }}
{{Lead | 16*| Blütenstände hängend; Nüsschen gewölbt
 | text_en = Inflorescences pendent. Nutlets convex
 | result = Acer macrophyllum
 | result text = ''Acer macrophyllum''
 | result qualifier = {{Smallcaps|Pursh}}
 | common names = Oregon-Ahorn
 | image j = File:Dryades_TSB78078.jpg
 }}

{{Lead | 17 | Blüten und Früchte in hängende Rispen (länger als breit)
 | text_en = Flowers and fruits arranged in racemes that are much longer than wide
 | image j = File:Dryades_Penzulony.jpg
 | 18 }}
{{Lead | 17*| Blüten und Früchte in nickenden, ausgebreiteten Schirmrispen
 | text_en = Flowers and fruits arranged in umbrella-like corymbs
 | image j = File:Dryades_Corymbiacer.jpg
 | 19 }}

{{Lead | 18 | Blätter unterseits (bis auf die Hauptadern) fast kahl; Blütenstände hängend; Knospen mit 4 oder mehr Schuppenpaaren
 | text_en = Leaves almost hairless beneath, except on the main veins. Inflorescences drooping. Buds with 4 or more pairs of scales
 | result = Acer pseudoplatanus
 | result text = ''Acer pseudoplatanus''
 | result qualifier = L.
 | common names = Bergahorn
 | image j = File:Dryades_TSB73351.jpg
 }}
{{Lead | 18*| Blätter unterseits flaumig; Blütenstände aufrecht; Knospen mit 2-4 Schuppenpaaren
 | text_en = Leaves downy beneath. Inflorescences upright. Buds with 2-4 pairs of scales
 | result = Acer caudatum subsp. ukurunduense
 | result text = ''Acer caudatum'' subsp. ''ukurunduense''
 | result qualifier = {{Smallcaps|(Trautv. & C.A.Mey.) A.E.Murray}}
 | common names = Ukurundu Ahorn
 | image j = File:Dryades_TSB72263.jpg
 }}

{{Lead | 19 (17)| Die meisten Früchte nur mit einem gut entwickelten Samen
 | text_en = Most fruits with a single well-developed seed
 | result = Acer saccharinum
 | result text = ''Acer saccharinum''
 | result qualifier = L.
 | common names = Silber-Ahorn
 | image j = File:Dryades_TSB78079.jpg
 }}
{{Lead | 19*| Alle Früchte mit zwei gut entwickelten Samen
 | text_en = All fruits with 2 well-developed seeds
 | image j = File:Dryades_Acerys.jpg
 | 20 }}

{{Lead | 20 | Blätter unterseits deutlich behaart
 | text_en = Leaves obviously hairy beneath
 | result = Acer opalus
 | result text = ''Acer opalus''
 | result qualifier = {{Smallcaps|Mill.}}
 | common names = Schneeball-Ahorn
 | image j = File:Dryades_TSB78080.jpg
 }}
{{Lead | 21*| Blätter unterseits kahl oder fast kahl
 | text_en = Leaves hairless or almost so beneath
 | 22 }}

 {{Lead | 22 | Blütenstände mit 5 roten Blüten
 | text_en = Inflorescences with 5 red flowers
 | result = Acer rubrum
 | result text = ''Acer rubrum''
 | result qualifier = L.
 | common names = Rot-Ahorn
 | image j = File:Dryades_TSB78081.jpg
 }}
{{Lead | 22*| Blütenstände mit 15-40 grünlichen Blüten
 | text_en = Inflorescences with 15-40 greenish flowers
 | result = Acer saccharum
 | result text = ''Acer saccharum''
 | result qualifier = {{Smallcaps|Marsh.}}
 | common names = Zucker-Ahorn
 | image j = File:Dryades_TSB78082.jpg
 }}

{{Lead | 23 (3)| Blätter am Grund gerade abgestutzt oder herzförmig
 | text_en = Leaves cut straight across or heart-shaped at base.
 | description = Blattrand deutlich gezähnt.
 | description_en = Leaf-margin clearly toothed.
 | image j = File:Dryades_VAL00050.jpg
 | image m = File:Dryades_Denty.jpg
 | image m width = 200
 | image m height = 50
 | 24 }}
{{Lead | 23*| Blätter am Grund gerundet oder in den Stängel sich verschmälern
 | text_en = Leaves rounded or tapering to base
 | image j = File:Dryades_VAL00043.jpg
 | result = Acer carpinifolium
 | result text = ''Acer carpinifolium''
 | result qualifier = {{Smallcaps|Siebold & Zucc.}}
 | common names = Hainbuchenblättriger Ahorn
 | image m = File:Dryades_TSB78095.jpg
 }}

{{Lead | 24 | Blätter dick, lederartig
 | text_en = Leaves thick, leathery
 | result = Acer sempervirens
 | result text = ''Acer sempervirens''
 | result qualifier = L.
 | common names = Kreta-Ahorn
 | image j = File:Dryades_TSB78085.jpg
 }}
{{Lead | 24*| Blätter nicht lederartig
 | text_en = Leaves not leathery
 | 25 }}

{{Lead | 25 | Blattspreite kürzer als 10 cm; Fruchtflügel fast parallel stehend
 | text_en = Leaves < 10 cm long. Fruit-wings almost parallel
 | result = Acer tataricum
 | result text = ''Acer tataricum''
 | result qualifier = L.
 | common names = Tatarischer Steppen-Ahorn
 | image j = File:Dryades_TSB78086.jpg
 }}
{{Lead | 25*| Blattspreite meist länger als 10 cm; Fruchtflügel bilden einen stumpfen Winkel
 | text_en = Leaves usually > 10 cm long. Fruit-wings forming an obtuse angle
 | result = Acer davidii
 | result text = ''Acer davidii''
 | result qualifier = {{Smallcaps|Franch.}}
 | common names = Davids-Ahorn
 | image j = File:Dryades_TSB78087.jpg
 }}
{{Key End}}


Im Schlüssel behandelte Arten:
* ''Acer campestre'' (*)
* ''Acer cappadocicum'' subsp. ''lobelii''
* ''Acer carpinifolium''
* ''Acer caudatum'' subsp. ''ukurunduense''
* ''Acer circinatum''
* ''Acer davidii''
* ''Acer forrestii''
* ''Acer ginnala''
* ''Acer griseum''
* ''Acer japonicum''
* ''Acer macrophyllum''
* ''Acer monspessulanum'' (*)
* ''Acer negundo'' (*)
* ''Acer opalus'' (*)
* ''Acer palmatum''
* ''Acer palmatum'' f. ''atropurpureum''
* ''Acer pensylvanicum''
* ''Acer platanoides'' (*)
* ''Acer pseudoplatanus'' (*)
* ''Acer rubrum''
* ''Acer saccharinum'' (*)
* ''Acer saccharum''
* ''Acer sempervirens''
* ''Acer tataricum''
* ''Acer tegmentosum''
("*" = Art auch in Jäger 2011, "Exkursionsflora von Deutschland", Springer Verlag)