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Jamesia americana var. rosea
ROSY-PETALLED CLIFFBUSH

Higher Taxonomy
Family: HydrangeaceaeView DescriptionDichotomous Key

Common Name: HYDRANGEA FAMILY
Habit: 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.
Genera In Family: 18 genera, +- 250 species: generally temperate, subtropical northern hemisphere; some cultivated for ornamental (Carpenteria, Hydrangea, Philadelphus). Note: Philadelphaceae in TJM (1993).
eFlora Treatment Author: Robert E. Preston & Charles F. Quibell
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: JamesiaView Description 

Common Name: CLIFFBUSH
Habit: Shrub < 2 m; herbage generally densely hairy. Stem: bark gray to +- red-brown, peeling as narrow strips. Leaf: deciduous, widely ovate to +- round, pinnately veined, margin toothed, sparsely hairy to +- glabrous above, canescent below. Inflorescence: terminal, flowers 1 or in cymes. Flower: sepals 4 or 5, lanceolate to narrowly ovate; petals 4 or 5, obovate or oblanceolate; stamens [8]10, alternating long and short, filament base wide and flat; chambers 3--5, 1 in fruit, placentas parietal, ovules many, styles 3--5, free, stigma terminal. Fruit: conic to ovoid, septicidal, styles persistent, spreading in fruit. Seed: many, with net-like ridges.
Species In Genus: 2 species: southwestern United States, northern Mexico. Etymology: (Edwin P. James, naturalist, 1797--1861)

Jamesia americana Torr. & A. Gray var. rosea C.K. Schneid.
NATIVE
Habit: Shrub < 1 m. Stem: bark generally gray. Leaf: petiole 2--6 mm; blade 1.5--4 cm, 1--2 cm wide. Inflorescence: terminal cyme; flowers (1)3--11. Flower: 1.2--1.5 cm wide, +- fragrant; sepals 5, 3--4 mm, gray-strigose; petals 5, 5--8 mm, elliptic to obovate, generally pink; stamens 10; ovary 1/2-inferior, styles > sepals. Fruit: 1--1.3 cm, conic. Seed: fusiform, brown.
Ecology: Rocky slopes, cliffs; Elevation: 2070--3700 m. Bioregional Distribution: c&s SNH, W&I, n DMtns (Panamint Range, Grapevine Mtns); Distribution Outside California: western Nevada (Sheep Range, Spring Mountains). Flowering Time: Jul--Aug Note: Other varieties in GB outside California, Rocky Mountains.
Unabridged Note: Expanded author citation: Jamesia americana Torr. & A. Gray var. rosea Purpus ex C.K. Schneid.
eFlora Treatment Author: Robert E. Preston & Charles F. Quibell
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Jamesia
Next taxon: Philadelphus

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botanical illustration including Jamesia americana var. rosea

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Citation for this treatment: Robert E. Preston & Charles F. Quibell 2016. Jamesia americana var. rosea, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=60290, accessed on February 11, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 11, 2016.


Jamesia americana var. rosea
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© 2005 Steve Matson
Jamesia americana var. rosea
click for enlargement
© 2005 Steve Matson
Jamesia americana var. rosea
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© 1998 Larry Blakely
Jamesia americana var. rosea
click for enlargement
© 2005 Steve Matson
Jamesia americana var. rosea
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© 2010 James M. Andre
Jamesia americana var. rosea
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© 2014 Steve Matson

More photos of Jamesia americana var. rosea in CalPhotos


Geographic subdivisions for Jamesia americana var. rosea:
c&s SNH, W&I, n DMtns (Panamint Range, Grapevine Mtns);
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.