Jepson eFlora: Taxon page
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Valeriana occidentalis
WESTERN VALERIAN

Higher Taxonomy
Family: ValerianaceaeView DescriptionDichotomous Key

Common Name: VALERIAN FAMILY
Habit: Annual, perennial herb, occasionally strongly scented, odor generally unpleasant. Leaf: simple to pinnately lobed or compound; petioles generally sheathing; basal +- whorled; cauline opposite, petioled to sessile. Inflorescence: cyme, panicle, or head-like, generally +- dense. Flower: generally bisexual; calyx fused to ovary tip, limb 0 or lobes generally 5--15, coiled inward, plumose in age, pappus-like, spreading in fruit; corolla radial to 2-lipped, lobes generally 5, throat generally > lobes, > tube, base generally spurred or swollen, tube slender, long or short; stamens generally 1--3, fused to petals; ovary inferior, chamber generally 1, or occasionally 3 but 2 empty or vestigial. Fruit: achene, smooth, ribbed, or winged.
Genera In Family: +- 17 genera, 300 species: generally temperate, worldwide except Australia. Some species cultivated (Centranthus), some medicinal (Valeriana).
eFlora Treatment Author: Abigail J. Moore & Lauramay T. Dempster, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: ValerianaView DescriptionDichotomous Key

Common Name: VALERIAN
Habit: [Annual] perennial herb from rhizome or short underground caudex, glabrous to soft-hairy. Stem: generally erect, 1--several. Leaf: basal simple to pinnately lobed or compound, tapered to petiole; cauline +- sessile to +- clasping, pinnately lobed to compound, distal lobe generally > others. Inflorescence: cyme, clustered, +- dense to open, terminal or axillary. Flower: calyx lobes 5--15, rolled inward, plumose in age, spreading, persistent in fruit; corolla +- funnel-shaped, white to pink, lobes +- equal, throat >> tube, occasionally swollen near base, tube slender, occasionally obscured by swollen throat; stamens 3; ovary +- 1-chambered. Fruit: generally compressed, generally 6-veined vertically.
Species In Genus: +- 200 species: temperate worldwide except Australia. Etymology: (Latin: strength, from use in folk medicine, or after Valerian, a Roman emperor)

Valeriana occidentalis A. Heller
NATIVE
Habit: Plants glabrous to sparsely hairy. Stem: 3--7.5 dm, nodes short-hairy. Leaf: 5--30 cm; petiole base, occasionally sinuses between lobes short-hairy; basal leaves simple to compound, blade ovate to round, occasionally deeply 3-lobed, terminal lobe > lateral lobes; cauline deeply lobed to compound, lobes or leaflets 3--7, margin entire to fine-crenate or -dentate, terminal lobe obtuse to acute. Flower: bisexual or pistillate; corolla 3.5--4.5 mm, white, lobes +- < throat. Fruit: 3--5 mm, ovoid.
Ecology: Moist places, conifer forest; Elevation: 1500--2200 m. Bioregional Distribution: MP; Distribution Outside California: to Oregon, Montana, Colorado. Flowering Time: Jun--Jul Note: California plants approach Valeriana californica.
eFlora Treatment Author: Abigail J. Moore & Lauramay T. Dempster
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Valeriana californica
Next taxon: Valeriana pubicarpa

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botanical illustration including Valeriana occidentalis

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Citation for this treatment: Abigail J. Moore & Lauramay T. Dempster 2016. Valeriana occidentalis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=47740, accessed on May 02, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 02, 2016.


Geographic subdivisions for Valeriana occidentalis:
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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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.