Jepson eFlora: Taxon page
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Vaccinium macrocarpon
CRANBERRY

Higher Taxonomy
Family: EricaceaeView DescriptionDichotomous Key

Common Name: HEATH FAMILY
Habit: Perennial herb, shrub, tree. Stem: bark often peeling distinctively. Leaf: simple or 0, generally cauline, alternate, opposite (whorled), evergreen or deciduous, often leathery, petioled or not; stipules 0. Inflorescence: raceme, panicle, cyme, or flowers 1, terminal or axillary, generally bracted; pedicel often with 2 bractlets. Flower: generally bisexual, generally radial, bell-shaped, cylindric, or urn-shaped; sepals generally (0)4--5, generally free; petals generally (0)4--5, free or fused; stamens (2--5)8--10, free, filaments rarely appendaged, anthers dehiscing by pores or slits, awns 0 or 2(4), seemingly abaxial, reduced or elongate, generally curved; nectary generally present at ovary base, generally disk-like; ovary superior or inferior, chambers generally 1--5, placentas axile or parietal, ovules 1--many per chamber, style 1, stigma head- to funnel-like or lobed. Fruit: capsule, drupe, berry. Seed: generally many, winged or not.
Genera In Family: +- 100 genera, 3000 species: generally worldwide except deserts; some cultivated, especially Arbutus, Arctostaphylos, Rhododendron, Vaccinium. Note: Monophyletic only if Empetraceae included, as treated here. Ledum included in Rhododendron. Non-green plants obtain nutrition from green plants through fungal intermediates.
eFlora Treatment Author: Gary D. Wallace, except as noted
Scientific Editor: Gary D. Wallace, Thomas J. Rosatti.
Genus: VacciniumView DescriptionDichotomous Key

Common Name: BLUEBERRY, HUCKLEBERRY
Habit: Shrub, [tree] glabrous to hairy, rhizomed or not, burls generally 0. Stem: trailing to erect. Leaf: cauline, alternate. Inflorescence: raceme or flowers 1, bracted; bud scales present; bractlets generally 2. Flower: sepals 4--5, 2/3 to fully fused; corolla cylindric to urn- or cup-shaped, petals generally 4--5, +- 2/3 fused, generally white; stamens 8 or 10, filaments generally glabrous, anthers elongate, awned or not, dehiscing by pores on small tubes; ovary inferior, chambers 4--5, or appearing 10 by intrusion of ovary wall, placentas axile, stigma head-like. Fruit: berry. Seed: generally many.
Species In Genus: 400+ species: temperate northern hemisphere, tropical mountains, Africa. Etymology: (Latin: for Vaccinium myrtillus L.)
Unabridged Note: Vaccinium oxycoccos L. reported from California; records lacking.

Vaccinium macrocarpon Aiton
NATURALIZED
Habit: Shrub, glabrous to hairy, rhizomed. Stem: prostrate and erect, < 1.5 dm, slender, rooting; twigs not angled, +- brown. Leaf: evergreen, generally 7--17 mm, narrowly elliptic to oblong, leathery, +- entire, abaxially glaucous. Inflorescence: flowers 1 in axils of reduced lowest leaves of youngest shoots; pedicel recurved, jointed to flower, bractlets 2, leaf-like. Flower: sepals 4, fused; petals 4, fused at base, lobes >> tube, reflexed when anthers open; filaments +- hairy, anthers awns 0. Fruit: 9--14 mm diam, red. Chromosomes: 2n=24.
Ecology: Boggy soil at abandoned placer mine; Elevation: +- 900 m. Bioregional Distribution: n SNH (near North Columbia, n Nevada Co.); Distribution Outside California: native to eastern North America. Flowering Time: Jun--Jul
eFlora Treatment Author: Gary D. Wallace
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Citation for this treatment: Gary D. Wallace 2016. Vaccinium macrocarpon, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=47670, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 29, 2016.


Geographic subdivisions for Vaccinium macrocarpon:
n SNH (near North Columbia, n Nevada Co.);
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.
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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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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.