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Rivina humilis is a species of flowering plant in the family Petiveriaceae. It was formerly placed in the pokeweed family, Phytolaccaceae. It can be found in the southern United States, the Caribbean, Central America, and Tropics South America. Common names include dogblood, pigeonberry, rougeplant, baby peppers, bloodberry, and coralito. The specific epithet means "dwarfish" or "lowly" in Latin, referring to the plant's short stature.
It is considered invasive in New Caledonia, where it was likely introduced in 1900. It is considered a weed in Queensland, Australia where it has naturalised, and is also naturalised on Cocos Islands, Réunion, Norfolk Island, Fiji, Tonga, French Polynesia, Hawaii, India and the Galapagos Islands.
The juice made from the berries was used as a dye and ink at one time. The berries contain a pigment known as rivianin or rivinianin, which has the IUPAC name 5-O-β-D-Glucopyranoside, 3-sulfate, CAS number 58115-21-2, and Chemical formula C24H26N2O16S. It is very similar to betanin, the pigment found in . The fruit also contains the betaxanthin humilixanthin.Humilixanthin a new betaxanthin from Rivina humilis. Dieter Strack, Doris Schmitt, Hans Reznik, Wilhelm Boland, Lutz Grotjahn and Victor Wray, Phytochemistry, 1987, Volume 26, Issue 8, Pages 2285–2287,
The juice of the berries have been tested in male rats and are reported to be safe to consume.Food Chem. Toxicol., December 2011, volume 49, issue 12, pages 3154-3157
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