Called “rhubarbs” in GBIF
Rheum is a genus of about 60 herbaceous perennial plants in the family Polygonaceae. Species are native to eastern Europe, southern and eastern temperate Asia, with a few reaching into northern tropical Asia. Rheum species are cultivated in Europe, Asia, and North America. The genus includes the vegetable rhubarb. The species have large somewhat triangular shaped leaves with long, fleshy petioles. The flowers are small, greenish-white to rose-red, and grouped in large compound leafy inflorescences. Many rhubarb cultivars have been domesticated as medicinal plants and for human consumption. While the leaves are slightly toxic, the stalks are used in pies and other foods for their tart flavour.
From Wikipedia, licensed under CC BY-SA 4.0
The same wild rhubarb species foragers prize for its tart stalks is showing a second life: its ro...
Every article on Plant News that mentions a member of this genus, newest first.
Scientists used extract from Rheum ribes (a wild rhubarb) roots to grow a nickel oxide nanomaterial doped with zinc and iron, creating a catalyst that uses sunlight to break down a common dye pollutant in water, clearing 95% of it in four hours.
