This tea originates at the Bat Cave (not the secret lair) on Yin Ping Peak, Wuyi. According to legend, it was given its name in the Ming Dynasty. It is one of the four most well-known rock teas, and also perhaps the most unique. Like the other teas discussed here, Bai Ji Guan is farmed asexually from late-grown seeds. It too is mostly found in the inner mountains, and has also been propagated in larger amounts since the 1980's. The bushes are medium-sized and have very thick, dense branches. The leaves are dull and shallow with average teeth around the edges. The surface also bulges. These leaves appear even more delicate than the other varieties. The buds are all a bright yellow color with miniscule hairs. The older leaves appear white in the sunshine and together with the buds look similar to a cockscomb, which is where the tea gets its name. The diameter of the corolla is 3.5cm with seven petals. They also blossom fully at the end of April. The yellow, bright buds and leaves together make a very unique Oolong tea that often has a fragrance of mushrooms. The sensations (cha yun) should be crisp and slightly dry in the mouth.