Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Charles F. Quibell

Shrub, subshrub
Stem < 3 m, generally erect; bark generally peeling as thin sheets or narrow strips
Leaves 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; sepals 4–7, free, spreading or erect; petals 4–7, free, ± round to narrowly elliptic, generally white; stamens 10–12 in 2 whorls or many and clustered, filament base linear or wide and flat; pistil 1, ovary superior to 2/3 inferior, chambers 2–8, ovules 1–2 or many per chamber, placentas axile or parietal, styles 3–8, free or fused at base
Fruit: capsule, loculicidal or septicidal; styles persistent or not
Seeds generally many, small to minute
Genera in family: 7 genera, 130 species: temp, subtropical n hemisphere; some cultivated for ornamental (Carpenteria, Deutzia, Philadelphus)
Recent taxonomic note: Recently treated within Hydrangeaceae [Soltis et al. 1995 Amer J Bot 82: 504–514]



Species in genus: 1 sp
Etymology: (Edwin P. James, naturalist, 1797–1861)
Reference: [Holmgren & Holmgren 1989 Brittonia 41:335–350]


J. americana Torr. & A. Gray var. rosea C.K. Schneid.

Shrub < 1 m; herbage generally densely hairy
Stem: bark generally gray, peeling as narrow strips
Leaves deciduous; petiole 2–6 mm; blade 1.5–4 cm, 1–2 cm wide, widely ovate to ± round, pinnately veined, margin toothed, upper surface green, finely strigose, lower surface pale gray-white, densely hairy
Inflorescence: cyme, terminal; flowers (1)3–11
Flower 1.2–1.5 cm wide, slightly fragrant; sepals 5, 3–4 mm, gray-strigose; petals 5, 5–8 mm, elliptic to obovate, generally pink; stamens 10, alternating long and short, filament base wide, flat; ovary half-inferior, chambers 3–5, 1 in fruit, placentas parietal, ovules many, styles 3–5, > sepals, persistent, spreading in fruit, stigma terminal
Fruit 1–1.3 cm, conic, septicidal
Seeds many, fusiform, brown
Ecology: Rocky slopes, cliffs
Elevation: 2250–3700 m.
Bioregional distribution: c&s High Sierra Nevada, White and Inyo Mountains, n Desert Mountains (Grapevine Mtns)
Distribution outside California: w Nevada
Flowering time: Jul–Aug
Synonyms: var. californica (E. Small) Jeps
Other vars. in GB, Rocky Mtns
Horticultural information: TRY; DFCLT.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for JAMESIA%20americana%20var.%20rosea being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Jamesia americana var. rosea
Retrieve dichotomous key for Jamesia
Overlay Consortium of California Herbaria specimen data by county on this map
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