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Amelanchier alnifolia var. semiintegrifolia

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: AmelanchierView DescriptionDichotomous Key

Habit: Shrub, small tree. Stem: bark gray- to red-brown; overwintering buds ovate to lanceolate, +- red to +- purple. Leaf: simple, deciduous; stipules deciduous. Inflorescence: raceme, cluster (panicle), flowers 3--16+; pedicel bractlets generally 1--2. Flower: hypanthium bell- to urn-shaped, bractlets 0; sepals persistent; petals erect to spreading, white (suffused with red); stamens +- 10--20; ovary inferior, 2--5-chambered, styles 2--5. Fruit: pome of 2--5 papery segments, berry-like, generally spheric, generally blue-black.
Species In Genus: +- 25 species: temperate North America, Eurasia, northern Africa. Etymology: (Latin: from old French common name) Note: Fruit of some species used by Native Americans for food.
Unabridged Note: Variation in Amelanchier in western North America not studied as extensively as in eastern North America, where hybridization, polyploidy, and apomixis have contributed to considerable taxonomic complexity (Campbell & Wright 1996 Folia Geobot Phytotax 31:345--354;
eFlora Treatment Author: Christopher S. Campbell
Species: Amelanchier alnifoliaView Description 

Stem: twigs glabrous. Leaf: blade elliptic to round, generally serrate above middle, glabrous in fruit. Flower: petal ovate to +- round; styles 4--5.

Amelanchier alnifolia var. semiintegrifolia (Hook.) C.L. Hitchc.
Habit: Plant 1--12 m. Leaf: blade 30--40 mm, 20--30 mm wide, abaxially finely or occasionally densely hairy in flower. Inflorescence: 4--8 cm; flowers 5--15. Flower: petal 12--15 mm; ovary top generally hairy. Fruit: 10--13 mm diam. Chromosomes: 2n=68.
Ecology: Open conifer or mixed-evergreen forest, slopes; Elevation: 50--2500 m. Bioregional Distribution: NCo, KR, n NCoRO; Distribution Outside California: to Alaska. Flowering Time: Mar--Jun
eFlora Treatment Author: Christopher S. Campbell
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botanical illustration including Amelanchier alnifolia var. semiintegrifolia


Citation for this treatment: Christopher S. Campbell 2016. Amelanchier alnifolia var. semiintegrifolia, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 30, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 30, 2016.

Amelanchier alnifolia var. semiintegrifolia
click for enlargement
© 2008 George W. Hartwell
Amelanchier alnifolia var. semiintegrifolia
click for enlargement
© 2008 George W. Hartwell
Amelanchier alnifolia var. semiintegrifolia
click for enlargement
© 2008 George W. Hartwell
Amelanchier alnifolia var. semiintegrifolia
click for enlargement
© 2008 George W. Hartwell

More photos of Amelanchier alnifolia var. semiintegrifolia in CalPhotos

Geographic subdivisions for Amelanchier alnifolia var. semiintegrifolia:
NCo, KR, n NCoRO;
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.