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Alismataceae

Sagittaria papillosa Buchenau

Kingdom: Plantae Rank: Species Parent: Sagittaria Status: Valid

Common Names:

  • NIPPLE-BRACT ARROWHEAD - English, United States of America

Morphological Description

Diagnosis: Leaves +/- phyllodial (= petiole and blade indistinct), +/- enlarged-spongy at base, tapering to linear or narrowly lanceolate blade portion or blade absent; petioles triangular in cross section; bracts of inflorescence densely papillose, 3–10 mm long; sepals papillose, appressed to spreading from fruiting aggregate; petals to ca. 12 mm long; filaments linear to slightly dilated, ascending, shorter than anthers, glabrous; achenes 1–1.5 mm long; achene beak inserted laterally above middle of achene, ca. 0.1–0.3 mm long.

Other

Notes: Swamps, marshes, lake margins, or other wet areas; Pineywoods and Post Oak Savannah; also Gulf Prairies and Marshes and e Edwards Plateau; Hatch et al. (1990) also indicated occurrence in the Blackland Prairie (however, we have seen no confirming specimens from the Blackland Prairie); AR, LA, MS, OK, and TX. Mar–Nov. Wooten and Brown (1983) studied the reproductive biology of this monoecious species. (papillosa: with papillae or nipple-like structures)