Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
Trillium ovatum subsp. ovatum

Higher Taxonomy
Family: MelanthiaceaeView DescriptionDichotomous Key

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

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
Species: Trillium ovatumView Description 

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.

Trillium ovatum Pursh subsp. ovatum
Stem: 1.5--7 dm. Leaf: generally sessile. Flower: generally +- erect; sepals 1--6 cm, 2--24 mm wide, lanceolate; petals 1.5--7 cm, 5--45 mm wide, lance-oblong to widely obovate.
Ecology: Redwood, mixed-evergreen forest on moist wooded slopes; Elevation: 10--1600 m. Bioregional Distribution: NW, CW; Distribution Outside California: to western Canada, Colorado. Flowering Time: Feb--Apr
eFlora Treatment Author: Dale W. McNeal & Bryan D. Ness
Jepson Online Interchange

Previous taxon: Trillium ovatum subsp. oettingeri
Next taxon: Veratrum

Name Search
botanical illustration including Trillium ovatum subsp. ovatum


Citation for this treatment: Dale W. McNeal & Bryan D. Ness 2016. Trillium ovatum subsp. ovatum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 29, 2016.

Trillium ovatum subsp. ovatum
click for enlargement
© 2015 Aaron E. Sims and CNPS
Trillium ovatum subsp. ovatum
click for enlargement
© 2015 Barry Breckling
Trillium ovatum subsp. ovatum
click for enlargement
© 2014 Barry Rice
Trillium ovatum subsp. ovatum
click for enlargement
© 2002 California Academy of Sciences
Trillium ovatum subsp. ovatum
click for enlargement
© 2014 Barry Rice
Trillium ovatum subsp. ovatum
click for enlargement
© 2014 Barry Rice

More photos of Trillium ovatum subsp. ovatum in CalPhotos

Geographic subdivisions for Trillium ovatum subsp. 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.
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.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.