Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Trillium

View taxon page for Trillium

(For a list of species in Trillium, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Flower stalked ..... T. ovatum

2. Petals 5–23 mm (often < 15 mm), 1.8–5.5 mm wide; flower ± nodding; 1200–2000 m; c KR (especially Marble Mtns, Siskiyou Co.) ..... subsp. oettingeri

2' Petals 1.5–7 cm, 5–45 mm wide; flower generally ± ; 10–1600 m; NW, CW ..... subsp. ovatum

1' Flower 

3. Stamens < 1.25 × pistil; flower odor generally musty or fetid; w KR, SN (except Teh), s CCo, SCoRO ..... T. angustipetalum

3' Stamens ± 2 × pistil; flower odor generally sweet rose-like or ± spicy; NW, CaR, n SN, SnFrB

4. Ovary, tissue between anther sacs ± green (ovary ± purple); petals white to ± pink, base occasionally ± purple; NW, CaR, n SN, SnFrB ..... T. albidum

4' Ovary, tissue between anther sacs purple; petals yellow to pink to dark purple, occasionally white; KR, NCoRI, CCo, SnFrB ..... T. chloropetalum



Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, [accessed on ]

Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

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