Nick Hawkins / Red trillium (Trillium erectum), photographed on white background, New Brunswick, Canada, May.
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Nick Hawkins / Painted trillium (Trillium undulatum) photographed on white background, New Brunswick, Canada, May.
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Dong Lei / Trillium flower (Trillium tschonoskii) in woodland, Lijiang City, Lijiang Laojunshan National Park, Yunnan Province, China. April.
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Dong Lei / Trillium plants (Trillium tschonoskii) with buds on forest floor with snow, Lijiang City, Lijiang Laojunshan National Park, Yunnan Province, China. April.
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Dong Lei / Hiker with Trillium (Trillium tschonoskii) in bud with snow, Lijiang Laojunshan National Park, Yunnan Province, China. April.
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Dong Lei / Trillium plants (Trillium tschonoskii) in bud on forest floor, Lijiang Laojunshan National Park, Yunnan Province, China. April.
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Dong Lei / Trillium (Trillium tschonoskii) in bud on forest floor, Lijiang Laojunshan National Park, Yunnan Province, China. April.
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LYNN M. STONE / Painted trillium (Trillium undulatum) flower, Pleasant Valley, Connecticut, USA
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LYNN M. STONE / Painted trillium (Trillium undulatum) flower,, Pleasant Valley, Connecticut, USA
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LYNN M. STONE / Painted trillium (Trillium undulatum) in mixed-woods forest, Pleasant Valley, Connecticut, USA,May.
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Doug Wechsler / Red Trillum (Trillium erectum) Fairmount Park, Wissahickon Creek, Philadelphia, Pennsylvania, USA, May.
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Doug Wechsler / Toad Trillium (Trillium sessile) Bowman's Hill Wildflower Preserve, Washington Crossing State Park, Pennsylvania, USA, April.
