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Aristida tuberculosa Nuttall. Dune Three-awn, Sand Three-awn, Seaside Needlegrass. Phen: Aug-Oct. Hab: Longleaf pine sandhills, coastal dunes, other dry, sandy habitats such as sandy roadsides. Dist: Se. NH south to NJ and disjunct in e. VA in the outer Coastal Plain; from sc. NC south to c. FL and Panhandle FL, west to s. MS (Sorrie & Leonard 1999), mostly in the inner Coastal Plain; and also near the Great Lakes in sw. MI, n. IN, n. IL, s. WI, se. MN, and e. IA.

Origin/Endemic status: Native

Taxonomy Comments: The curious trimodal distribution is unexplained. Voss & Reznicek (2012) commented that "the distinctive twisted column of awns is shorter in material from near the head of Lake Michigan than in specimens from the East Coast of the United States".

Synonymy ⓘ: = C, F, FNA25, G, HC, Il, K1, K3, K4, Mi, NE, NY, RAB, S, S13, Tat, Va, WH3, Allred (1986)

Links to other floras: = Aristida tuberculosa - FNA25

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Heliophily ⓘ: 9

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image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷

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