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Spiraea douglasii

Higher Taxonomy
Family: RosaceaeView DescriptionDichotomous Key

Common Name: ROSE FAMILY
Habit: Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0--3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0--5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5--many, anther pollen sacs generally 2; pistils (0)1--many, simple or compound, ovary superior to inferior, styles 1--5. Fruit: 1--many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1--5 stones. Seed: generally 1--5 (per fruit, not per flower).
Genera In Family: 110 genera, +- 3000 species: worldwide, especially temperate; many cultivated for ornamental, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. Note: Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis.
eFlora Treatment Author: Daniel Potter & Barbara Ertter, family description, key to genera; treatment of genera by Daniel Potter, except as noted
Scientific Editor: Daniel Potter, Thomas J. Rosatti.
Genus: SpiraeaView DescriptionDichotomous Key

Habit: Shrub, unarmed. Leaf: simple, oblong to (ob)ovate, generally serrate, deciduous; stipules generally 0; petiole 0--short. Inflorescence: raceme or panicle, many-flowered, bracted; pedicel bractlet generally 1, at top, generally linear. Flower: hypanthium obconic to bell-shaped, bractlets 0; sepals spreading to erect; petals spreading, pink to rose; stamens 15--many; pistils 5, opposite petals, free or fused at base, surrounded by hypanthium, ovaries superior, styles +- terminal, beak-like in fruit, stigmas head-like. Fruit: follicles 5, dehiscent along adaxial, top of abaxial suture. Seed: +- fusiform; coats membranous.
Species In Genus: +- 50 species: northern temperate. Etymology: (Greek: shrub)
eFlora Treatment Author: Daniel Potter & Thomas J. Rosatti

Spiraea douglasii Hook.
Habit: Plant 10--20 dm, +- tomentose. Leaf: generally oblong to elliptic, generally 3--9 cm; petiole < 10 mm. Flower: hypanthium +- 1 mm; sepals 0.5--1 mm; petals +- 1.5 mm, pink to rose. Chromosomes: n=18.
Ecology: Moist areas, conifer forest; Elevation: < 2060 m. Bioregional Distribution: n NCo, KR, CaR, n SNH, w MP; Distribution Outside California: to British Columbia. Flowering Time: Jun--Sep
eFlora Treatment Author: Daniel Potter & Thomas J. Rosatti
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botanical illustration including Spiraea douglasii


Citation for this treatment: Daniel Potter & Thomas J. Rosatti 2016. Spiraea douglasii, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on February 06, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on February 06, 2016.

Spiraea douglasii
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© 2006 Steve Matson
Spiraea douglasii
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© 1980 Gary A. Monroe
Spiraea douglasii
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© 2006 Steve Matson
Spiraea douglasii
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© 2006 Steve Matson
Spiraea douglasii
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© 2003 Michael Charters
Spiraea douglasii
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© 2009 Julie Kierstead Nelson

More photos of Spiraea douglasii in CalPhotos

Geographic subdivisions for Spiraea douglasii:
n NCo, KR, CaR, n SNH, w MP;
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.
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.