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Key to families | Table of families and genera

Previous taxon Indexes to all accepted names and synonyms:
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Lorin I. Nevling, Jr. & Kerry Barringer

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.
± 50 genera, 750 species: worldwide, especially Australia, tropical Africa; some cultivated (Daphne, Edgeworthia), weedy (Thymelaea). [Van der Bank et al. 2002 Taxon 51:329–339] —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Van der Bank, M., Fay, M. F., & Chase, M. W. 2002. Molecular phylogenetics of Thymelaeaceae with particular reference to African and Australian genera. Taxon 51: 329–339]

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.
4 species: temperate North America, Mexico. (Greek: name from mythology) [Nesom & Mayfield 1995 Sida 56:21–42]
Unabridged references: [Johnson 1994 Four Seasons 9(4):38–41; McMinn & Forderhase 1935 Madroño 3:117–120; Vogelman 1953 Asa Gray Bull II 2:77–82]

D. occidentalis A. Gray WESTERN LEATHERWOOD
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.
2n=36. Generally north or northeast facing slopes, mixed-evergreen forest to chaparral, generally in fog belt; 50–400 m. San Francisco Bay Area. Nov–Mar [Online Interchange] {CNPS list}

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora,, accessed on Nov 29 2015
Citation for this treatment: [Author of taxon treatment] 2013. Dirca, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on Nov 29 2015

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click for enlargement Dirca occidentalis
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1995 Saint Mary's College of California

Geographic subdivisions indicated for the distribution of Dirca occidentalis 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.