Mature Dutchman’s Pipe vines twist into thick, rope-like trunks as they age. Photo: Krzysztof Ziarnek, Kenraiz / Wikimedia Commons (CC BY-SA 4.0) Aristolochia macrophylla (syn.
A mature Shumard oak in Greensboro, North Carolina, showing the broad, rounded crown typical of open-grown trees. Photo: Bruce Kirchoff, via Wikimedia Commons (CC BY
A dense saw palmetto understory beneath live oaks and pines at Manatee Springs State Park, Florida. Photo: Miguel Vieira, via Wikimedia Commons (CC BY 2.0)
Fraser fir growing at high elevation along the Blue Ridge Parkway, North Carolina. Photo: Gene (Aiken, SC), Wikimedia Commons (CC BY 2.0) Abies fraseri, the
An American chestnut reaching for the canopy in a mixed forest. Photo: Choess, Wikimedia Commons (CC BY-SA 3.0) Castanea dentata, the American chestnut, is a
Leatherleaf in bloom along a Superior National Forest bog, its arching stems lined with small white flowers. Photo: U.S. Forest Service, Superior National Forest, via
A mature Engelmann spruce above the Pacific Crest Trail in the North Cascades, its narrow spire-like crown typical of high-elevation trees. Photo: Jsayre64, via Wikimedia
A mature northern catalpa in full June bloom, its broad crown topped with showy white flower clusters. Photo: Cbaile19, via Wikimedia Commons (CC0) Catalpa speciosa,
A mature black locust in full spring bloom, its crown dense with white flower clusters. Photo: Norbert Nagel, via Wikimedia Commons (CC BY-SA 3.0) Robinia
Mature slash pines with saw palmetto understory along a flatwoods trail. Photo: Krzysztof Ziarnek, Kenraiz, Wikimedia Commons (CC BY-SA 4.0) Pinus elliottii, commonly known as
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