What is "raphanus caudatus"

Radish \Rad"ish\ (r[a^]d"[i^]sh), n. [F. radis; cf. It. radice, Pr. raditz: all fr. L. radix, -icis, a root, an edible root, especially a radish, akin to E. wort. See Wort, and cf. Eradicate, Race a root, Radix.] (Bot.) The pungent fleshy root of a well-known cruciferous plant ( Raphanus sativus); also, the whole plant.

Radish fly (Zo["o]l.), a small two-winged fly ( Anthomyia raphani) whose larv[ae] burrow in radishes. It resembles the onion fly.

Rat-tailed radish (Bot.), an herb ( Raphanus caudatus) having a long, slender pod, which is sometimes eaten.

Wild radish (Bot.), the jointed charlock.

The rat-tail radish ( Chinese: t , s , shǔwěi luóbó), serpent radish, or tail-pod radish is a plant of the radish genus Raphanus named for its edible seed pods. Linnaeus described it as the species Raphanus caudatus; it is now sometimes treated as a variety of the common radish (R. sativus), either caudatus or mougri.

It is found primarily in India and Southeast Asia and is believed to have originated in China. It was first known in the West no later than 1815, when introduced into England from Java.