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Vascular Plants of California
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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)
Reference: Holmgren & Holmgren 1989 Brittonia 41:335--350
Jamesia americana Torr. & A. Gray var. rosea Purpus ex 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 Synonyms: Edwinia californica Small; Jamesia americana subsp. californica (Small) E. Murray; Jamesia americana var. californica (Small) Jeps.; Jamesia californica Fedde.
Jepson eFlora Author: Robert E. Preston & Charles F. Quibell
Reference: Holmgren & Holmgren 1989 Brittonia 41:335--350
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

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Next taxon: Philadelphus

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Botanical illustration including Jamesia americana var. rosea

botanical illustration including Jamesia americana var. rosea

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Citation for this treatment: Robert E. Preston & Charles F. Quibell 2012, Jamesia americana var. rosea, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=60290, accessed on December 15, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on December 15, 2019.

Jamesia americana var. rosea
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© 1998 Larry Blakely
Jamesia americana var. rosea
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© 2005 Steve Matson
Jamesia americana var. rosea
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© 2017 Neal Kramer
Jamesia americana var. rosea
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© 1998 Larry Blakely
Jamesia americana var. rosea
click for enlargement
© 2017 Neal Kramer
Jamesia americana var. rosea
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© 2010 Vernon Smith

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)
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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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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.