Jepson eFlora: Taxon page
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Hesperocyparis bakeri
BAKER CYPRESS, SISKIYOU CYPRESS

Higher Taxonomy
Family: CupressaceaeView DescriptionDichotomous Key

Common Name: CYPRESS FAMILY
Habit: Shrub, tree, generally evergreen; monoecious or dioecious. Leaf: simple, cauline, alternate or opposite (either +- 4-ranked) or whorled in 3s (6-ranked), linear or scale-, awl- or needle-like (sometimes linear and awl-like on 1 pl, or on juvenile or injured plants), generally decurrent, covering young stems. Pollen Cone: axillary or terminal. Seed Cone: +- fleshy to generally woody, generally hard at maturity; scales opposite or whorled, peltate or not. Seed: 1--many per scale, angled or lateral winged, generally wind-dispersed. Chromosomes: n=11.
Genera In Family: 30 genera, 130+ species: +- worldwide, especially North America, Eurasia. Note: Incl (paraphyletic) Taxodiaceae. Taxa of (polyphyletic) Cupressus in TJM (1993) now in Callitropsis, Chamaecyparis, Hesperocyparis.
eFlora Treatment Author: Jim A. Bartel, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: HesperocyparisView DescriptionDichotomous Key

Common Name: WESTERN CYPRESS
Habit: Large shrub, 1- or multi-trunked tree, often pyramidal in youth; monoecious. Stem: young shoots or branches generally cylindric (sometimes +- 4-angled or flat), generally in 3-dimensional clusters. Leaf: opposite, 4-ranked, of 1 kind, scale-like, closely appressed, overlapping. Pollen Cone: terminal, 2--6.5 mm, 1.3--3 mm diam, generally yellow. Seed Cone: 10--50 mm, woody, +- spheric to widely cylindric, maturing 2nd year, generally closed and attached beyond maturity (> 2 years); scales (4)6--12, peltate, abutting, shield- or wedge-shaped, projection generally > 1 mm especially 1st year, pointed, base level with or rising from edge. Seed: 60--150 per cone, flat, wings generally 2, vestigial; cotyledons generally 3--5. Chromosomes: 2n=22(23,24).
Species In Genus: 16 species: western and central North America, Central America. Etymology: (Greek: western cypress)

Hesperocyparis bakeri (Jeps.) Bartel
NATIVE
Habit: Tree 7--30(40) m. Stem: bark peeling in irregular plates, +- red- or cherry-brown, aging gray-brown; ultimate branches 0.7--1 mm diam, cylindric. Leaf: dark to gray-green, resin not copious. Pollen Cone: 2--3 mm, generally spheric; scales 6--10; pollen sacs 3--5 per scale. Seed Cone: 10--18(25) mm, spheric; surface warty, silvery to dull brown; scales 4--8. Seed: (2.4)3--4 mm, generally glaucous, tan to dull red-brown, generally with many wart-like pitch pockets; attachment scar conspicuous.
Ecology: Mixed-evergreen forest, open slopes, flats, often on serpentine; Elevation: 1100--1800 m. Bioregional Distribution: KR, CaRH, n SNH, MP; Distribution Outside California: southwestern Oregon.
Synonyms: Callitropsis bakeri (Jeps.) D.P. Little; Cupressus bakeri Jeps.; Cupressus bakeri subsp. bakeri, Modoc cypress; Cupressus bakeri subsp. matthewsii C.B. Wolf, Siskiyou cypress
eFlora Treatment Author: Jim A. Bartel
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Hesperocyparis abramsiana var. butanoensis
Next taxon: Hesperocyparis forbesii

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botanical illustration including Hesperocyparis bakeri

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Citation for this treatment: Jim A. Bartel 2016. Hesperocyparis bakeri, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=89294, 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.


Geographic subdivisions for Hesperocyparis bakeri:
KR, CaRH, n SNH, 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.
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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.