👉 Gristle horbias, also known as grain horbas or grain horbals, are a type of flowering plant native to the regions of China and Japan. The name "gristle" comes from the fact that their leaves are primarily composed of small, sticky grains called "gristle" (also known as "spores") which they use for growing their roots. Gristle horbas have long, slender stems with large, drooping leaves that often grow in clusters around a central stem.