Ceratophyllaceae
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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
Ceratophyllaceae
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Scientific Name
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Description
Family Description - Fls small and inconspicuous, axillary, hydrogamous, hypogynous, unisexual, solitary in the axils, the male generally above the female; sep tiny, 8–15 in a single whorl, connate at the base; pet none; stamens mostly 10–20, distinct, spirally arranged on the flat receptacle, filament short and broad; pollen-sacs extrorse on the thickened, somewhat laminar connective, which is prolonged into a pair of prominent points; pollen inaperturate; pistil solitary, simple, tapering into a filiform style; ovule solitary, suspended; fr an achene; seed with thin testa, lacking both perisperm and endosperm; embryo with 2 thickened cotyledons; plumule well developed, with several embryonic lvs; radicle vestigial; submersed, aquatic, rootless perennial herbs with elongate, branching stems, and whorled, dichotomously dissected lvs. 1/6.
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Common Names
The hornwort family