First discovered in shaded crevices in Ma On Shan in 1907, this species is a rare species discontinuously distributed in Hong Kong (type locality) and Taiwan and is thus of special botanical interest.

• 本种模式标本采自香港，首次于1907年在马鞍山的山涧发现，间断分布于香港、台湾两地，其分布式样有学术意义。