Glossary of Plant Systematics (1st ed.) by Simpson (2006)
- (a) A coiled and twining leaf part, usually a modified rachis or leaflet. (leaf structural type) (b) A long, slender, coiling branch, adapted for climbing. (stem/shoot type)
Glossary of "Flora of Okinawa and the Southern Ryukyu Islands" by Walker (1976)
- A filiform outgrowth of stem or leaf which usually rotates or twists about some other object, thus aiding a plant to climb; morphologically it may be a modified stem, leaf, leaflet, or stipule. 巻ひげ（巻髭）
- Simpson, M. G. 2006. Plant Systematics. -xi + 590 pp. Elsevier Academic Press, Oxford.
- Walker, E. H. 1976. Flora of Okinawa and the Southern Ryukyu Islands. ix + 1159 pp. Smithsonian Institution Press, Washington, D. C.