OddJobber Loc: Portland, OR

Grows in partial shade under a purple smoke tree.
Height 3-4 feet.
Adds another bloom or two each year.
Blooms are huge (The one below is 22 inches.) and wilt after just a few days.
Stalk is mottled. Leaves have light stripes.

Mr. B Loc: eastern Connecticut

It appears to be a species of Anthurium. There are over 1,00 species.

From greatbiggreenhouse.com:

"Anthuriums are members of the Aroid family (Araceae), as evidenced by the distinctive arrangement of the flowering parts—a spathe-and-spadix inflorescence. Other popular aroids include caladium, calla lily, Chinese evergreen, dieffenbachia, elephant ear and peace lily (Spathiphyllum).


In anthuriums, the elongated spadix bears the many tiny flowers (Anthurium means “tail flower”), while the spathe, a modified leaf, serves to attract pollinators. In “flowering” anthuriums, those that produce showy inflorescences, the spathe may be fairly large and colorful, as in the Hawaiian Flamingo Flower. Foliage anthuriums tend to have unusual, but less showy flowers, with a plain green spathe that is much less noticeable than the long, skinny spadix. Their decorative value lies in the great variety of leaf forms, textures, and sizes (some varieties sporting leaves of up to four feet in length.)"

OddJobber Loc: Portland, OR

Thanks, Mr. B. You're my new hero of the day.

More googling led from Anthuriums and Aroid to eventually Dracunculus vulgaris aka Dragon Arum, Voodoo Lily, and Black Lily.
https://www.tumblr.com/search/dracunculus

This is definitely a voodoo lily! Thanks again! :)

Kingmapix Loc: Mesa, Arizona

Do not know the flower, but I would not get too close. It looks like it could swallow you up.

OddJobber Loc: Portland, OR

That would be my plant's bigger cousin, the "corpse flower" that only blooms every ten years. :-D
http://www.emirates247.com/news/world/crowds-flock-to-see-the-corpse-flower-2011-04-25-1.384949

relbugman Loc: MD/FL/CA/SC

What a beautiful color, like raw meat! Does it smell? Any particular time of day (if it does)? Do flies visit it? Burying beetles? Other bugs? What a neat plant to study.

Mr. B Loc: eastern Connecticut

You're welcome. My pleasure. The University of Connecticut has a corpse flower. It blooms about once per 10 years or so and, believe me, it's aptly named. The stench is overwhelming!

OddJobber Loc: Portland, OR

Voodoo lilies "usually" have a rotten meat smell but mine don't. Got lucky. :)