Jepson eFlora: Taxon page
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Hesperocyparis pygmaea

Higher Taxonomy
Family: CupressaceaeView DescriptionDichotomous Key

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

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 pygmaea (Lemmon) Bartel
Habit: Shrub or tree, 1--2 m on sterile soil, 10--20(50) m on rich soil; with long whip-like ultimate shoot. Stem: bark fibrous, gray-brown; ultimate branches 0.9--1.1 mm diam, cylindric. Leaf: generally dark dull green, resin 0. Seed Cone: 12--27(35) mm, spheric to generally widely elliptic, tan aging gray; scales 6--10. Seed: 2.5--4.7(5.5) mm, not glaucous, dark red-brown to black, shiny or not; attachment scar inconspicuous.
Ecology: Closed-cone-pine/cypress forests, mixed-evergreen forest, coastal terraces; Elevation: 50--200(300) m. Bioregional Distribution: s NCo (Mendocino, Sonoma cos.); Distribution Outside California: reported from southwestern Oregon.
Synonyms: Callitropsis pygmaea (Lemmon) D.P. Little; Cupressus goveniana Gordon subsp. pygmaea (Lemmon) A. Camus; Cupressus goveniana Gordon subsp. pygmaea (Lemmon) Bartel, superfl.; Cupressus goveniana subsp. pigmaea, orth. var.; Cupressus pygmaea (Lemmon) Sarg.; Cupressus goveniana Gordon var. pygmaea Lemmon; Cupressus goveniana subsp. pygmaea (Lemmon) A. Camus; Cupressus goveniana Gordon var. pygmaea Lemmon
eFlora Treatment Author: Jim A. Bartel
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Hesperocyparis nevadensis
Next taxon: Hesperocyparis sargentii

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Citation for this treatment: Jim A. Bartel 2016. Hesperocyparis pygmaea, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 05, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 05, 2016.

Hesperocyparis pygmaea
click for enlargement
© 2009 Neal Kramer
Hesperocyparis pygmaea
click for enlargement
© 2009 Neal Kramer
Hesperocyparis pygmaea
click for enlargement
© 2009 Neal Kramer
Hesperocyparis pygmaea
click for enlargement
© 2009 Neal Kramer

More photos of Hesperocyparis pygmaea in CalPhotos

Geographic subdivisions for Hesperocyparis pygmaea:
s NCo (Mendocino, Sonoma cos.);
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.