Zanthoxylum americanum (prickly-ash)
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Notes
Key Characteristics
- Tall, spiney, aromatic shrub or small tree, up to 3 meters tall, sprouting profusely from the roots and forming dense, multistemmed clones, dioecious, moderately shade tolerant, and eaten by giant swallow tail butterflies
- Bark smooth, gray to brown
- Leaves alternate, pinnately compound (5-11) with a terminal leaflet, nearly sessile, aromatic when crushed, rachis red and occasionally occasionally prickly, petioles with prickles, leaflets sessile
- Twigs slender, zigzag, smooth with persistent paired stipular spines below the buds
- Winter buds small, superposes wooly, rusty red
- Wood yellow, hard
Sourced from "Michigan Shrubs"
Comments
Pictures
Many come from Steve Baskauf at Vanderbilt University