GENUS CODE: HYDRA GENUS SCIENTIFIC:Hydrangea GENUS AUTHORITY: L. GENUS COMMON: Hydrangea GENUS SUMMARY: A genus of about 45 species, shrubs and lianas, of e. North America and e. Asia. Molecular analyses have long suggested that Hydrangea as usually interpreted is polyphyletic (Soltis, Xiang, & Hufford 1995; Samain, Wanke, & Goetghebeur 2010) and should be circumscribed more broadly to include other genera in tribe Hydrangeeae that are phylogenetically embedded (including, in our area, Decumaria); this approach has been further developed and formalized by De Smet et al. (2015), an approach followed here (generic and sectional circumscriptions follow De Smet et al. 2015). See Dirr (2004) and van Gelderen & van Gelderen (2004) for information on cultivated hydrangeas. GENUS IDENTIFICATION: Identification notes: Hydrangea barbarais readily distinguished from the other opposite-leaved, woody vines in our flora (Gelsemium, Trachelospermum, Lonicera, Bignonia, Campsis, and Clematis) by its leaves (simple, ovate, and usually serrate) and climbing structures (adventitious roots). GENUS REFERENCES: Freeman in FNA (in prep.); McGregor in FNA (in prep.); Pilatowski (1982)=Z; McClintock (1957)=Y; Hufford in Kubitzki (2004).
FAMILY INDEX
FAMILY CODE: HYDRAN FAMILY SCIENTIFIC:Hydrangeaceae FAMILY AUTHORITY: Dumortier 1829 FAMILY COMMON: Hydrangea Family FAMILY SUMMARY: A family of about 17 genera and 190-220 species, trees, shrubs, vines, and herbs, primarily north temperate. As here interpreted, the family Hydrangeaceae includes two well-marked groups, the Hydrangeae (including Decumaria and Hydrangea) and the Philadelpheae (including Deutzia and Philadelphus). This group has been shown by molecular research to be unrelated to the Saxifragaceae, and to have its closest affinities to the Loasaceae, Cornaceae, and Nyssaceae (Xiang et al. 2002; Soltis, Xiang, & Hufford 1995; Morgan & Soltis 1993). FAMILY REFERENCE: Freeman in FNA (in prep.); Spongberg (1972); Soltis, Xiang, & Hufford (1995); Morgan & Soltis (1994); Xiang et al. (2002); Hufford in Kubitzki (2004).
USDA Symbol: HYMA7
USDA Common Name: French Hydrangea
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WEAKLEY FLORA
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Key to Map SymbolsABOUT FAMILY (Weakley Flora) Hydrangeaceae Dumortier 1829 (Hydrangea Family) SUMMARY: A family of about 17 genera and 190-220 species, trees, shrubs, vines, and herbs, primarily north temperate. As here interpreted, the family Hydrangeaceae includes two well-marked groups, the Hydrangeae (including Decumaria and Hydrangea) and the Philadelpheae (including Deutzia and Philadelphus). This group has been shown by molecular research to be unrelated to the Saxifragaceae, and to have its closest affinities to the Loasaceae, Cornaceae, and Nyssaceae (Xiang et al. 2002; Soltis, Xiang, & Hufford 1995; Morgan & Soltis 1993). REFERENCE: Freeman in FNA (in prep.); Spongberg (1972); Soltis, Xiang, & Hufford (1995); Morgan & Soltis (1994); Xiang et al. (2002); Hufford in Kubitzki (2004).ABOUT GENUS (Weakley Flora) Hydrangea L. (Hydrangea) SUMMARY: A genus of about 45 species, shrubs and lianas, of e. North America and e. Asia. Molecular analyses have long suggested that Hydrangea as usually interpreted is polyphyletic (Soltis, Xiang, & Hufford 1995; Samain, Wanke, & Goetghebeur 2010) and should be circumscribed more broadly to include other genera in tribe Hydrangeeae that are phylogenetically embedded (including, in our area, Decumaria); this approach has been further developed and formalized by De Smet et al. (2015), an approach followed here (generic and sectional circumscriptions follow De Smet et al. 2015). See Dirr (2004) and van Gelderen & van Gelderen (2004) for information on cultivated hydrangeas. REFERENCE: Freeman in FNA (in prep.); McGregor in FNA (in prep.); Pilatowski (1982)=Z; McClintock (1957)=Y; Hufford in Kubitzki (2004).
HERBARIUM RESOURCES
SERNEC: Find Hydrangea macrophylla in Southeast Regional Network of Experts and Collections (if available) UNC SERNEC: Find Hydrangea macrophylla in
University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)