Jepson eFlora: Taxon page
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Abies magnifica var. shastensis
SHASTA RED FIR

Higher Taxonomy
Family: PinaceaeView DescriptionDichotomous Key

Common Name: PINE FAMILY
Habit: Shrub, tree, evergreen; monoecious. Stem: young crown conic; twig not grooved, resinous, generally persistent. Leaf: simple, generally alternate, sometimes in bundles or appearing +- 2-ranked, linear or awl-like; base decurrent, woody or not, persistent several years. Pollen Cone: generally < 6 cm, not woody, deciduous. Seed Cone: generally woody; bracts, scales generally persistent; scale not peltate, fused to or free from subtending bract. Seed: 2, on scale base adaxially.
Genera In Family: 10 genera, 193 species: generally northern hemisphere; many of great commercial value, supplying > 1/2 of world's timber.
eFlora Treatment Author: J. Robert Haller, Nancy J. Vivrette, & James R. Griffin, except as noted
Scientific Editor: Thomas J. Rosatti, Bruce G. Baldwin.
Genus: AbiesView DescriptionDichotomous Key

Common Name: FIR
Stem: young bark smooth, with resin blisters, mature bark generally thick, deeply furrowed; young branches appearing whorled; twig without persistent, peg-like leaf bases, glabrous or hairy; leaf scars smooth, +- round to elliptic; bud generally +- spheric, generally < 1 cm, +- resinous. Leaf: 2--9 cm, sessile, twisted at base to be 2-ranked, often upcurved on upper twigs, generally +- flat; adaxially with 2 +- faint, longitudinal, +- white bands or not, midrib depressed or not; abaxially with 2 +- white bands or not, midrib ridge-like or not Seed Cone: erect, < 23 cm, maturing 1st year; stalk generally 0; bracts, scales deciduous; bract included or exserted, +- free from scale; axis persistent on stem, ultimately falling. Seed: with obvious resin deposits on surface; wing < 2.5 cm. Chromosomes: 2n=24.
Species In Genus: 39 species: northern hemisphere. Etymology: (Latin: silver fir)
Species: Abies magnificaView Description 

Common Name: CALIFORNIA RED FIR
Stem: trunk < 57 m, < 2.5 m wide; mature crown +- cylindric, top rounded; bark gray, with resin blisters in youth, deeply furrowed, with dark +- red ridges in age; twig hairy 1st year; bud +- resinous. Leaf: < 3.5 cm, +- 3--4-angled; adaxially with +- white bands; tip notched or blunt. Seed Cone: 12--23 cm; bract included or +- exserted.


Abies magnifica var. shastensis Lemmon
NATIVE
Habit: Cotyledons 5--8. Seed Cone: bract exserted, covering < 25% cone surface.
Ecology: Upper mixed-conifer to subalpine forests; Elevation: 1350--2800 m. Bioregional Distribution: KR, CaRH, s SNH; Distribution Outside California: southern Oregon (Cascade Range). Note: Plants in southern SNH recently described as Abies magnifica var. critchfieldii Lanner (Madroño 57:141--144, 2010).
Synonyms: Abies ×shastensis (Lemmon) Lemmon
eFlora Treatment Author: J. Robert Haller, Nancy J. Vivrette, & James R. Griffin
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botanical illustration including Abies magnifica var. shastensis

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Citation for this treatment: J. Robert Haller, Nancy J. Vivrette, & James R. Griffin 2016. Abies magnifica var. shastensis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=53445, accessed on February 10, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 10, 2016.


Abies magnifica var. shastensis
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© 2014 Julie Kierstead Nelson
Abies magnifica var. shastensis
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© 2005 California Academy of Sciences

More photos of Abies magnifica var. shastensis in CalPhotos


Geographic subdivisions for Abies magnifica var. shastensis:
KR, CaRH, s SNH;
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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Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.