Difference between revisions of "Quercus acerifolia"

(E. J. Palmer) Stoynoff & W. J. Hess ex R. J. Jensen

Fl. N. Amer. 3: 465. 1997.

Common names: Maple-leaf oak
Conservation concernEndemicIllustrated
Basionym: Quercus shumardii var. acerifolia E. J. Palmer J. Arnold Arbor. 8: 54. 1927
Treatment appears in FNA Volume 3.
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|basionyms={{Treatment/ID/Basionym
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|name=Quercus shumardii var. acerifolia
 
|name=Quercus shumardii var. acerifolia
 
|authority=E. J. Palmer
 
|authority=E. J. Palmer
 
|rank=variety
 
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|publication_title=J. Arnold Arbor.
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|publication_place=8: 54. 1927
 
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|hierarchy=Fagaceae;Quercus;Quercus sect. Lobatae;Quercus acerifolia
 
|hierarchy=Fagaceae;Quercus;Quercus sect. Lobatae;Quercus acerifolia
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|synonyms=Quercus shumardii var. acerifolia
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|family=Fagaceae
 
|family=Fagaceae
 
|phenology=Flowering spring.
 
|phenology=Flowering spring.
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|publication year=1997
 
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|special status=Conservation concern;Endemic;Illustrated
 
|special status=Conservation concern;Endemic;Illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V3/V3_2.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_2.xml
 
|genus=Quercus
 
|genus=Quercus
 
|section=Quercus sect. Lobatae
 
|section=Quercus sect. Lobatae

Latest revision as of 18:58, 29 February 2024

Trees or shrubs, deciduous, to 15 m. Bark dark gray to almost black, sometimes becoming rough and furrowed. Twigs grayish brown to reddish brown, 1.5-3(-3.5) mm diam., glabrous or sparsely pubescent. Terminal buds gray to grayish brown, ovoid or broadly ellipsoid, 3.5-5.5 mm, glabrous. Leaves: petiole 20-45 mm, glabrous. Leaf blade oblate to broadly elliptic, 70-140 × (60-)100-150(-180) mm, base cordate-truncate to obtuse, margins with 5-7(-9) lobes and 11-48 awns, lobes ovate-oblong or markedly distally expanded, the middle or apical pairs often overlapping, apex acute; surfaces abaxially glabrous or with prominent axillary tufts of tomentum, occasionally with scattered pubescence, adaxially glabrous, secondary veins raised on both surfaces. Acorns biennial; cup saucer- to cup-shaped, 4-7 mm high × 10-20 mm wide, covering 1/4-1/3 nut, outer surface glabrous or puberulent, inner surface light brown to red-brown, glabrous or with ring of pubescence around scar, scales often with pale margins, tips tightly appressed, obtuse or acute; nut ovoid to oblong, 10.5-20 × 9-15 mm, glabrous or pubescent, scar diam. 5-9 mm.


Phenology: Flowering spring.
Habitat: Dry glades, slopes, and ridge tops
Elevation: 500-800 m

Discussion

Of conservation concern.

Quercus acerifolia is known only from four localities in Arkansas: Magazine Mountain, Logan County; Porter Mountain, Polk County; Pryor Mountain, Montgomery County; and Sugarloaf Mountain, Sebastian County (N. Stoynoff and W. J. Hess 1990; G. P. Johnson 1992, 1994). Some specimens suggest hybridization with Q. marilandica and/or Q. velutina, but no hybrids have been reported.

Selected References

None.

Lower Taxa

None.
... more about "Quercus acerifolia"
Richard J. Jensen +
(E. J. Palmer) Stoynoff & W. J. Hess ex R. J. Jensen +
Maple-leaf oak +
500-800 m +
Dry glades, slopes, and ridge tops +
Flowering spring. +
Fl. N. Amer. +
Conservation concern +, Endemic +  and Illustrated +
Quercus shumardii var. acerifolia +
Quercus acerifolia +
Quercus sect. Lobatae +
species +