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Sand dunes and dry sandy habitats, especially near the coast.
MD to FL and LA; naturalized much further north, especially in sandy areas.
Herbaceous perennial from a short caudex; leaves numerous, stiff, linear-elliptic to linear-spatulate, to 80 cm long and 2-7 cm wide, fibrous along the margins, abruptly prolonged into a short, stout spine, more or less scabrous; inflorescence paniculate, many-flowered, to 1-3 m, the base elevated well above the leaves; tepals 5-7 cm long and 2-3 cm wide, rounded above, short-acuminate; style nearly 1 cm; stigmas slender; fruit thick-cylindric, 2-4 cm; seeds 6 mm.
Flowers June to September
Wetland indicator: NA
A few other species found in the southeastern U.S. include Y. aloifolia, Y. flaccida (sometimes treated as a variety of Y. filamentosa), and Y. glariosa .
Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (http://plants.usda.gov).
National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
Michael Hough © 2018