Heteranthera multiflora (Griseb.) C.N.Horn
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Pontederiaceae
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Scientific Name
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Description
Species Description - Much like no. 2 [Heteranthera reniformis Ruiz & Pav.]; blades usually a little longer than wide; fls 3–16, all opening in one or 2 days, the spike elongating well out of the spathe; perianth pale purple or white, scarcely glandular-pubescent, the tube 3–12 mm, the central upper lobe with 2 yellow spots in the dark purple basal area; hairs of the filaments copious, purple; 2n=32. In shallow water or emersed on mud; c. U.S., from Nebr., Kans., and Okla. to Ill. and Miss.; disjunct on the coastal plain from N.J. to N.C., and in S. Amer.