submersed and floating. Floating leaves have well-developed epidermis abaxially and adaxially, and well-developed cuticle at least adaxially. Floating leaves
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prostrate or decumbent for much of their length, occasionally climbing, rarely floating; nodes prominent, sometimes concealed by the leaf-sheaths; internodes hollow
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stellate-pubescent; sap milky. Roots septate or not septate. Leaves basal, submersed, floating, or emersed, sessile or petiolate, sheathing proximally; blade with translucent
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Treatment appears in FNA Volume 22. Plants perennial, rarely annual, submersed, floating-leaved, or emersed, glabrous to sparsely pubescent; rhizomes often present
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sepals; tori enlarged and spongy at maturity; horizontal stems sometimes floating, wetland habitats. Comarum 9 Petals yellow to white, rarely pink or red
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present. Leaves alternate or nearly opposite, submersed or both submersed and floating, sessile or petiolate; sheath not persisting longer than blade, not leaving
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page 22, 23. Herbs, annual or perennial, aquatic, rooted in mud or free-floating. Stems of 2 types, vegetative and flowering; vegetative stems indeterminate
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or monoecious. Culms annual, 20-500 cm tall, aerenchymatous, sometimes floating. Leaves aerenchymatous; auricles present or absent; ligules membranous
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sometimes bearing stolons. Leaves arising directly from rhizome, alternate, floating, submersed, or emersed; stipules present or absent; petioles long. Leaf-blade
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clonal or not. Stems erect, decumbent, lax, spreading, creeping, trailing, floating, or submerged, young ones often 4-angled. Leaves deciduous, usually opposite
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tart drupes; it has naturalized in south Florida. The floating aquatic herb P. fluitans (floating spurge or red root floater), is increasingly popular for
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stem, glabrous or pubescent, entirely submersed, with both submersed and floating leaves, or with submersed stolons and emergent leaves, in fresh, brackish
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unbranched, erect or repent; elongate stolons present or absent. Leaves mostly floating (vernal leaves submersed; blades sessile, broad). Leaf-blade orbiculate
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Treatment appears in FNA Volume 22. Herbs, erect or floating, or sometimes with some leaves floating and some emergent. Leaves flat, planoconvex, or abaxially
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appears in FNA Volume 3. Rhizomes branched, repent; stolons absent. Leaves floating, submersed, or emersed. Leaf-blade orbiculate to linear, basal lobes divergent
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Herbs, perennial, aquatic or paludal, emergent or leaves and inflorescence floating, rhizomatous, caulescent in flower, glabrous. Leaves basal and cauline
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heteromorphic, floating leaves averaging larger than land leaves. Petiole filiform, stiffly erect or procumbent in land leaves, lax in floating leaves. Blade
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erect to spreading or prostrate and then often rooting at nodes, sometimes floating, submerged parts, when present, sometimes swollen with spongy aerenchyma
30 KB (1,654 words) - 21:01, 7 June 2022
rooting at nodes or floating in water, then rootless. > 10 9 Leafy stems erect or if decumbent rooting only at base, never floating. > 14 10 Leaves 3-foliolate
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Nauman Common names: Floating Fern or Water Spangle Family Treatment appears in FNA Volume 2. Treatment on page 336. Plants small, floating aquatics. Stems
4 KB (160 words) - 00:32, 30 July 2020