Arundinaria alabamensis is a species of temperate bamboo in the family Poaceae, commonly known as Tallapoosa cane. It is endemic to the southeastern United States, primarily in east-central Alabama with occurrences extending into the Georgia Piedmont.
It is one of four species of native bamboo in North America.
Arundinaria alabamensis is a perennial, woody bamboo growing approximately tall. Culms are erect and arise from leptomorphic rhizomes, forming spreading colonies.
Leaves are linear to triangular and evergreen, with pubescence on both surfaces. Culm leaves vary in size, becoming larger toward the apex.
Nodes bear a single bud positioned on a triangular shoulder of the prophyll. Growth occurs through sympodial branching, where rhizomes extend horizontally before producing new culms.
The species was formally described in 2023 by J. Kevin Triplett.
It is considered a stabilized species of hybrid origin between Arundinaria gigantea and Arundinaria tecta, with closer affinity to A. tecta.
Genetic evidence suggests that A. alabamensis retains relatively high genetic diversity and may derive from multiple ancestral gene pools, indicating an ongoing process of evolutionary stabilization.
Arundinaria alabamensis is primarily distributed in east-central Alabama, especially within the Piedmont Upland region, and has also been reported from the Georgia Piedmont.
It occurs in oakâÂÂhickory forests and woodlands across a range of moisture conditions, including mesic, submesic, and xeric slopes. It may also be found along hillside seepages and occasionally near perennial streams.
Flowering is rare or not well documented, and the species is generally not observed to flower under typical conditions.
Arundinaria alabamensis is considered globally vulnerable (G3) according to NatureServe.
Due to its limited known range and relatively recent recognition as a distinct species, further research is needed to clarify its full distribution, ecological requirements, and conservation status.