Jepson eFlora: Taxon page
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Trillium ovatum
WHITE or WESTERN TRILLIUM

Higher Taxonomy
Family: MelanthiaceaeView DescriptionDichotomous Key

Common Name: FALSE-HELLEBORE FAMILY
Habit: Perennial herb, from rhizome or bulb, or rhizomes ending in weakly developed bulbs, scapose or not. Leaf: alternate, whorled, or mostly basal and spirally arranged, deciduous after 1 year or not. Inflorescence: raceme, panicle, or flowers 1. Flower: perianth parts 6, in 2 petal-like whorls or of sepals and petals, free or fused below, +- spreading; stamens 6, from perianth, anthers attached at base or near middle; ovary superior or partly inferior, chambers 3, styles 3, persistent. Fruit: capsule, loculicidal or septicidal.
Genera In Family: 10 genera, 130 species: northern hemisphere. Note: W North America Zigadenus moved to Toxicoscordion.
eFlora Treatment Author: Dale W. McNeal, except as noted
Scientific Editor: Dale W. McNeal, Thomas J. Rosatti.
Genus: TrilliumView DescriptionDichotomous Key

Common Name: WAKEROBIN, TRILLIUM
Habit: Rhizome short, thick, spreading to erect. Stem: erect, >=1 per rhizome. Leaf: 3, in 1 whorl subtending flower, sessile or subsessile, +- ovate. Inflorescence: flowers 1 per stem, erect to nodding, stalked or sessile. Flower: bisexual; sepals 3, free, persistent, +- green; petals 3, free, withering, white, +- pink, +- yellow, or purple; stamens 6; ovary chambers 3, styles 3. Fruit: capsule, +- berry-like. Seed: many, ovoid.
Species In Genus: +- 30--40 species: North America, Asia. Etymology: (Latin: 3, from leaves) Note: Trillium rivale moved to Pseudotrillium.
eFlora Treatment Author: Dale W. McNeal & Bryan D. Ness

Trillium ovatum Pursh
NATIVE
Stem: 1--7 dm. Leaf: 4--20 cm, 5--20 cm wide, acute to acuminate at tip, generally green, generally not spotted. Flower: erect to nodding, stalked; petals ascending, 0.5--7 cm, linear to widely obovate, white, aging pink; stamens 1.7--15 mm, tissue between anther sacs yellow or +- white. Fruit: obscurely winged, green or white. Chromosomes: n=5.

eFlora Treatment Author: Dale W. McNeal & Bryan D. Ness
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Next taxon: Trillium ovatum subsp. oettingeri

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Citation for this treatment: Dale W. McNeal & Bryan D. Ness 2016. Trillium ovatum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=47239, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 29, 2016.


Trillium ovatum
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© 2007 California Academy of Sciences
Trillium ovatum
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© 2014 California Academy of Sciences
Trillium ovatum
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© 2002 California Academy of Sciences
Trillium ovatum
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© 2014 California Academy of Sciences
Trillium ovatum
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© 2013 California Academy of Sciences
Trillium ovatum
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© 1999 California Academy of Sciences

More photos of Trillium ovatum in CalPhotos


Geographic subdivisions for Trillium ovatum:
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.