The genus Arachnis, abbreviated as Arach in horticultural trade, (scorpion orchid,[2][3]) is a member of the Orchid family (Orchidaceae), consisting of more than 20 species native to China, India, Southeast Asia, Indonesia, the Philippines, New Guinea, and the Solomon Islands.[4][5]
The appearance of the monopodial, epiphytic herbs of the genus Arachnis is characterized by distichously arranged, linear leaves.[6] The vining plants may grow into a dense thicket.[7] Arachnis does not produce pseudobulbs.[8]
The flowers are thought to resemble spiders,[8] and they are fragrant.[6][8] The fragrance has been described as musky.[8]
Arachnis senapatiana has been found growing in subtropical broad-leaved forests at elevations of 1747 m above sea level.[6]
It can be cultivated under warm and moist conditions growing in pots, baskets, or mounted on slabs.[7]