Lysichiton americanus aka Western Skunk Cabbage

Lysichiton americanus, also known as western skunk cabbage (US), yellow skunk cabbage (UK), American skunk-cabbage (Britain and Ireland) or swamp lantern, is a tall herb (up to 1.5 m high, covering approximately 1 m 2 ground) with large (40-70 cm up to 1.5 m) glossy light green leaves coming from short thick fleshy rhizomes (up to 30 cm long and 2.5-5 cm diameter). It is found in swamps and wet woods, along streams and in other wet areas of the Pacific Northwest and emits a distinctive "skunky" odor when it blooms. It also has 1 to 2 (sometimes up to 4) inflorescences surrounded by a showy bright yellow spathe up to 45 cm high and enclosing one fleshy, up to 25 cm long spadix carrying many flowers at the bottom. Flowers are small, yellowish green and the fruits are green berries at the end of the spadix, maturing in its natural range from June to early August. It is easy to distinguish from the eastern skunk cabbage (Symplocarpus foetidus), another species in the arum family found in eastern North America, and a cross between it and a closely related species from Japan, also called "skunk cabbage" but less malodorous, is grown as an ornamental plant on the margins of British aquatic gardens. As a rare houseplant, Lysichiton americanus needs regular watering to thrive, and does best in long-lasting, direct light. It should be less than 1 foot from a window.