Zannichelliaceae
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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
Zannichelliaceae
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Scientific Name
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Description
Family Description - Fls small and inconspicuous, hydrophilous, in small, axillary, usually complex and sympodial infls, unisexual, the plants monoecious; perianth wanting, or of 3 tiny, scale-like, unvasculated, basally connate tep; stamen actually or apparently solitary, with 1–6 thecae and 2–12 microsporangia; pollen spheroidal, monosulcate or more often lacking an exine; pistils (1–)3–4(–9), distinct; ovule solitary, ventral-apical, pendulous; fr of achenes or drupelets; endosperm wanting; cotyledon circinately coiled above the swollen hypocotyl; slender, much branched, glabrous, submersed aquatic herbs, ± rhizomatous and rooted in the substrate; lvs alternate or opposite, or the distal ones seemingly in whorls of 3–4, with a linear or filiform, 1-nerved or partly 3-nerved blade and a sometimes stipule-like sheath. 4/7–8.
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Common Names
The horned pondweed family