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HYDRANGEACEAE HYDRANGEA FAMILY

Robert E. Preston & Charles F. Quibell

Perennial herb to small tree or vine. Stem: < 3 m, generally erect; bark generally peeling as thin sheets or narrow strips. Leaf: generally simple, opposite, deciduous or not, ± hairy; stipules 0; blade ± round to narrowly elliptic, entire or toothed. Inflorescence: cyme, raceme, panicle, or flower 1, terminal or axillary, generally bracted. Flower: bisexual, radial, flowers on inflorescence margins occasionally sterile and enlarged; sepals 4–10, free or fused at base, spreading or erect; petals 4–7, free, ± round to narrowly elliptic; stamens 8–12 in 2 whorls or many and clustered, filament base linear or wide and flat; pistil 1, ovary superior to inferior, chambers 2–8, ovules 1–2 or many per chamber, placentas axile or parietal, styles 1–8, free or fused at base. Fruit: capsule, loculicidal or septicidal; styles persistent or not. Seed: generally many, small to minute, oblong to fusiform, winged or not.
18 genera, ± 250 species: generally temperate, subtropical northern hemisphere; some cultivated for ornamental (Carpenteria, Hydrangea, Philadelphus). [Hufford et al. 2001 Int J Plant Sci 162:835–846] Philadelphaceae in TJM (1993). —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.
Unabridged references: [Hufford 1997 Int J Plant Sci 158:652–672; Soltis et al. 1995 Amer J Bot 82:504–514]

Key to Hydrangeaceae

CARPENTERIA

1 sp. (William M. Carpenter, Lousiana botanist, 1811–1848)

Previous taxon: Hydrangeaceae
Next taxon: Carpenteria californica

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jul 22 2014
Citation for this treatment: [Author of taxon treatment] 2013. Carpenteria, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=9624, accessed on Jul 22 2014

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