Jepson eFlora: Taxon page
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Dirca occidentalis

Higher Taxonomy
Family: ThymelaeaceaeView Description 

Habit: Shrub [herb, tree, vine], often ill-smelling, poisonous. Stem: erect, flexible, branched, generally with raised, woody leaf scars; bark fibrous, tear-resistant, often green and/or +- white, at least in patches, especially when young. Leaf: simple, alternate [opposite, +- whorled], pinnately veined, entire, petioled; stipules +- 0. Inflorescence: axillary cluster [umbel, spike, raceme, or flowers 1]. Flower: bisexual [not], [3]4[6]-parted; hypanthium tubular or funnel- to bell-shaped, corolla-like; calyx lobes overlapped or not, or +- 0; petals small, alternate sepals; stamens [2,4]8[many]; disk generally present; ovary superior [1/2-inferior], 1-chambered, 1-ovuled, style 1, stigma dot-like. Fruit: berry [capsule]. Seed: 1.
Genera In Family: +- 50 genera, 750 species: worldwide, especially Australia, tropical Africa; some cultivated (Daphne, Edgeworthia), weedy (Thymelaea).
eFlora Treatment Author: Lorin I. Nevling, Jr. & Kerry Barringer
Scientific Editor: Thomas J. Rosatti.
Genus: DircaView Description 

Leaf: deciduous; broad-ovate to obovate; petioles covering buds. Inflorescence: nodding. Flower: open with or before leaves; calyx lobes short; petals minute, +- scale-like, included, forming a ring; filaments +- = style, exserted. Fruit: fleshy.
Species In Genus: 4 species: temperate North America, Mexico. Etymology: (Greek: name from mythology)

Dirca occidentalis A. Gray
Stem: 1--3 m, silky-hairy in youth. Leaf: petioles 3--6 mm; blade 2--7 cm, silky-hairy, base, tip rounded. Inflorescence: 1--4 flowered. Flower: short-pedicelled; hypanthium yellow. Fruit: 8--10 mm, yellow-green, glabrous. Chromosomes: 2n=36.
Ecology: Generally north or northeast facing slopes, mixed-evergreen forest to chaparral, generally in fog belt; Elevation: 50--400 m. Bioregional Distribution: SnFrB. Flowering Time: Nov--Mar
eFlora Treatment Author: Lorin I. Nevling, Jr. & Kerry Barringer
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

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botanical illustration including Dirca occidentalis


Citation for this treatment: Lorin I. Nevling, Jr. & Kerry Barringer 2017. Dirca occidentalis, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 23, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on September 23, 2017.

Dirca occidentalis
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© 2007 Aaron Schusteff
Dirca occidentalis
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© 2016 Neal Kramer
Dirca occidentalis
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© 2017 Steve Matson
Dirca occidentalis
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© 2008 Neal Kramer
Dirca occidentalis
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© 2005 Janell Hillman
Dirca occidentalis
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© 2016 Neal Kramer

More photos of Dirca occidentalis in CalPhotos

Geographic subdivisions for Dirca occidentalis:
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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).

View elevation by latitude chart
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.