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Holodiscus dumosus

Common name:	Rock Spiraea	Family:	Rosaceae
Author:	(Nutt.)Heller.	Botanical references:	11, 60, 200
Synonyms:	Spiraea dumosa (Nutt.), Sericotheca dumosa, Holodiscus discolor dumosus ((Nutt.)Coult.)
Known Hazards:	None known
Range:	Western N. America - Wyoming to Texas, Arizona and New Mexico.
Habitat:	Dry rocky desert valleys and hillsides well up into the mountains[60].
Edibility Rating (1-5):	1	Medicinal Rating (1-5):	1

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	H. discolor var. dumosus[B,P] H. dumosus var. typicus[B,P]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Bush Oceanspray [FEIS,DEN2], Glandular Oceanspray [B], Rock Spiraea [S], Rockspirea [P], Spiraea, Rock [S],
Epithets:	From a Dictionary of Botanical Epithets
	dumosus = bushy;
Systematics:	From a USDA Plants Database
	Order: Rosales. Rose family

Physical Characteristics

A decidious shrub growing to 4.5m. It is hardy to zone 4. It is in flower in July, and the seeds ripen in October. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects. We rate it 1/5 for edibility and 1/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and requires well-drained soil. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It requires dry or moist soil.

Habitats and Possible Locations

Woodland, Sunny Edge, Dappled Shade, Shady Edge.

Edible Uses

Fruit; Tea.

Fruit - raw or cooked[105, 177]. Small and dry[161].
The leaves can be steeped in water to make a tea[257].

Medicinal Uses

Disclaimer

Antiseptic; Astringent; Stomachic.

A decoction of the root has been used in the treatment of diarrhoea and stomach disorders[257].
A decoction of the stems has been used in the treatment of colds and stomach disorders[257].
A decoction of the flowers, leaves and stems has been used as an antiseptic wash[257].

Other Uses

None known

Cultivation details

Succeeds in a good loamy soil that does not become too dry in summer[1] in full sun or light shade[200].
Plants are hardy to about -15c[200].

Propagation

The seed requires 4 months stratification at 4°c. It is best sown as soon as it is ripe in a cold frame. Stored seed should be sown as early in the year as possible. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.
Cuttings of half-ripe wood with a heel, July/August in a frame. Can be difficult[200].
Layering in spring. Easy[200].

Suppliers

For more details of plant suppliers please see our Suppliers Page which lists many more places to look.

PFAF Web Pages

This plant is mentioned in the following web pages

Web References

[B] Data (Latin & Common names, other references) from the BONAP's Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands.
[S] Image from the Southwest School of Botanical Medicine
[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database
[DEN] Data _ Photos (Good Identification info) from the Virginia Tech's Dendrology Deptarments' Tree Fact Sheets.
[FEIS] Data (Uses, Ecology, Fire Effects) from the USDA Forestry Service Fire Effects Information System.

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).

[11] Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981
A classic with a wealth of information on the plants, but poor on pictures.

[60] Hitchcock. C. L. Vascular Plants of the Pacific Northwest. University of Washington Press 1955
A standard flora for Western N. America with lots of information on habitat etc. Five large volumes, it is not for the casual reader.

[105] Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing 1976
The most comprehensive guide to edible plants I've come across. Only the briefest entry for each species, though, and some of the entries are more than a little dubious. Not for the casual reader.

[161] Yanovsky. E. Food Plants of the N. American Indians. Publication no. 237. U.S. Depf of Agriculture.
A comprehensive but very terse guide. Not for the casual reader.

[177] Kunkel. G. Plants for Human Consumption. Koeltz Scientific Books 1984 ISBN 3874292169
An excellent book for the dedicated. A comprehensive listing of latin names with a brief list of edible parts.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[257] Moerman. D. Native American Ethnobotany Timber Press. Oregon. 1998 ISBN 0-88192-453-9
Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.

Readers Comments

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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
WEB search engine by Rich Morris - Home Page- Contact Info
Blagdon Cross, Ashwater, Beaworthy, Devon, EX21 5DF, UK.
Website: www.pfaf.org Phone: 0845 458 4719/_44(0) 1208 872963

This page (UK) http://www.comp.leeds.ac.uk/cgi-bin/pfaf/arr_html?Holodiscus+dumosus
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We make no claims of magical effects or supernatural powers for any item in this catalog. In spite of legendary attributes or occult and craft tradition, such items are offered as curios only and beliefs concerning their magical effectiveness are related only for historical interest.