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© tallpaultheforester

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CC BY-SA 4.0

Inclusion in Plant ID / Comparison Guides

This photo is featured in 3 plant ID/comparison guides:

collage of Bear Oak and Blackjack Oak

Bear Oak (Quercus ilicifolia) vs. Blackjack Oak (Quercus marilandica)

Updated October 20th, 2020

Bear oak and blackjack oak can be confused as both can occur together in harsh, barren habitats, and in such habitats blackjack oak may exhibit a scrubbier growth habit more like bear oak. They are usually easily distinguished by differences in leaf shape, buds, acorn caps, and growth habit. Their ranges only overlap in a small portion of the Mid-Atlantic and mid-to-southern Appalachians; bear oak ranges farther north and blackjack oak farther south and west.

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collage of Blackjack Oak and Water Oak

Blackjack Oak (Quercus marilandica) vs. Water Oak (Quercus nigra)

Updated October 1st, 2020

These two species are frequently confused as their leaf shapes are similar and atypical for oaks. Although their ranges overlap extensively, they have almost no overlap in habitat, with water oak preferring flood-prone sites and sometimes moist uplands, whereas blackjack oak prefers extremely dry, nutrient-poor, fire-prone habitats. They are easily told apart by leaf size, shape, bark, acorns, and habitat.

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The other guide is not yet completed and published.