Acer grandidentatum Nutt.
Family: Sapindaceae
bigtooth maple,  more...
Acer grandidentatum image
Max Licher  
Plant: tree; to ca. 12 m high, mainly glabrous to subglabrous except for finely pubescent lower leaf surfaces and young growth; young twigs yellowish-brown, soon becoming chestnut-brown and essentially glabrous; buds at maturity with 3 or 4 series of dark brown, imbricate scales, these pubescent within, elongating when buds break Leaves: suborbicular in outline, palmately 3-lobed (2 additional basal lobes sometimes present), 3-8.5 cm long, 4-12 cm wide, discolorous, the major lobes in turn with up to ca. 5 weak lobes or teeth; apex of leaf and lateral lobes bluntly acute; base cordate to subcordate; petiole glabrous or pubescent distally; margin sinuate to irregularly dentate or lobed INFLORESCENCE: inflorescence corymbose Flowers: to ca. 10 mm long, 1.5-3 mm wide at base of perianth, the usually cup-like perianth greenish-yellow, ca. 5 mm long, sometimes splitting to base, the receptacle truncate to obconic, the perianth margin sinuate to shallowly lobed; the pedicel 1-5 cm long Fruit: samaras 2.2-5 cm long, the wing 0.7-1.5 cm wide Misc: In conifer forests or in wet areas in oak forests; 1350-2600 m (4500-8500 ft); Apr-May (retaining fruits until about Sep) REFERENCES: Landrum, Leslie R. 1995. Aceraceae. J. Ariz. - Nev. Acad. Sci. 29(1): 2, 2-3.
Landrum 1995, Kearney and Peebles 1969
Common Name: bigtooth maple Duration: Perennial Nativity: Native Lifeform: Tree Wetland Status: FACU General: Trees up to 15 m, with smooth gray or brown bark. Leaves: Leaves thick and pubescent below, palmately divided, with few, obtuse teeth, mostly sessile or borne on short petioles, the margin sinuate to irregularly dentate or lobed. Flowers: Borne in clusters, bright green, small and rounded, about 10 mm long, 1.5-3 mm wide at base, cup-like perianth made up of inconspicuous petals that are greenish yellow, borne on pedicels 1-5 cm long, with numerous, exserted stamens. Fruits: Winged samaras with 2 large fruits, fused in the middle, 2-5 cm long and 1-1.5 cm wide, bright green when young, turning reddish with age, and then to light tan at maturity. Ecology: Found in canyons and coniferous forests from 4,500-7,000 ft (1372-2134 m); flowers in April. Distribution: Ranges north to Idaho and Wyoming and south to Guatemala. Notes: This is the classic-looking maple, with big-toothed leaves, turning a bright, lovely red in fall. Ethnobotany: Unknown Etymology: Acer is the classical Latin name for the maple genus, while grandidentatum means bearing large teeth. Synonyms: Acer grandidentata Editor: LCrumbacher, 2011
Acer grandidentatum image
Max Licher  
Acer grandidentatum image
Max Licher  
Acer grandidentatum image
Max Licher  
Acer grandidentatum image
Max Licher  
Acer grandidentatum image
L.R. Landrum  
Acer grandidentatum image
Max Licher  
Acer grandidentatum image
Tony Frates  
Acer grandidentatum image
Max Licher  
Acer grandidentatum image
Max Licher  
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Sue Carnahan  
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Patrick Alexander  
Acer grandidentatum image
Sue Carnahan  
Acer grandidentatum image
Patrick Alexander  
Acer grandidentatum image
Patrick Alexander  
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Sue Carnahan  
Acer grandidentatum image
Patrick Alexander  
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Thomas Van Devender  
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Thomas Van Devender  
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George Ferguson  
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Wood, Sara  
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Stephanie Harvey  
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