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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

FENDLERELLA
Shrub < 8 dm. Stem: bark ± white, peeling as thin sheets or strips; twigs strigose. Leaf: deciduous, leathery, ± sessile. Inflorescence: cymes clustered, terminal, dense to open; flowers (1)3–11. Flower: odorless; sepals 5; petals 5, white; stamens 10, alternating long and short, filament base wide, flat; ovary 1/2 inferior, chambers 3, placentas axile, ovule 1 per chamber, styles 3, persistent, spreading in fruit, stigma terminal. Fruit: ± cylindric, septicidal. Seed: fusiform, red-brown.
3 species: southwestern United States, northern Mexico. (Latin: small Fendlera)

F. utahensis (S. Watson) A. Heller YERBA DESIERTO
NATIVE
Leaf: blade 8–16 mm, 3–6 mm wide, ovate to elliptic, strigose, 3-veined from base, margin entire, ± rolled under. Inflorescence: 12–18 mm, short-peduncled. Flower: sepals ± 1.5 mm, lance-linear, sparsely strigose; petals 3–4 mm, oblong-obovate. Fruit: ± 4 mm. Seed: ± 2 mm.
Limestone soils, cliffs, rock crevices, slopes, pinyon/juniper woodland; 1300–2800 m. White and Inyo Mountains (Inyo Mtns), Desert Mountains; to Colorado, northern Mexico. May–Aug [Online Interchange] {CNPS list}

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 21 2014
Citation for this treatment: [Author of taxon treatment] 2013. Fendlerella, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=25764, accessed on Oct 21 2014

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Geographic subdivisions indicated for the distribution of Fendlerella utahensis Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.