Polygonum is a taxonomically difficult, highly variable genus. Plants of Polygonum are annual or perennial herbs, shrubs, or vines of moist habitats, many becoming tenancious weeds in disturbed areas. Section Echinocaulon, usually defined by the occurrence of recurved prickles on stems, petioles, and abaxial surfaces of major leaf veins, consists of 21 species. The taxonomic treatment of Echinocaulon in this volume is based on comparative morphology, biogeography, cladistic analyses, and flavonoid chemistry. Includes keys, descriptions, and distribution maps.
Taxonomy of Polygonum Section Echinocaulon (Polygonaceae). Mem (47)
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Taxonomy of Polygonum Section Echinocaulon (Polygonaceae). Mem (47)
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Taxonomy of Amauroderma (Basidiomycetes, Polyporaceae). Mem (34)
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MEM 118 C09-Orchid taxonomy on a global scale: a network for data verification
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The Systematics of Rhynchospora Section Dichromena. Mem (37)
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MEM 57 C09-Cytotaxonomy of Cycads.
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MEM 97 C03-Taxonomía, Distribución y Estado de Conservación de Zamia en Ecuador.
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The Juncus triformis Complex. Mem (39)
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Britton's Botanical Empire. Mem (94)
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