Calamus (palm)

Calamus is a genus of flowering plants in the palm family Arecaceae that are among several genera known as rattan palms. There are an estimated 400 species in this genus, all native to tropical and subtropical Asia, Africa, and Australia.[2][3][4] They are dioecious,[5] mostly leaf-climbing lianas with slender, reedy stems. To aid scrambling some species have evolved hooks on the underside of the midrib, or more commonly by modified “pinnae” or tendrils in the form of stout, backward-pointing spines. These stems may grow to lengths of 200 metres.[6][7]

Species
As of April 2021, Plants of the World Online includes:[1]

Calamus acamptostachys (Becc.) W.J.Baker
Calamus acanthochlamys J.Dransf.
Calamus acanthophyllus Becc.
Calamus acanthospathus Griff.
Calamus acaulis A.J.Hend., N.K.Ban & N.Q.Dung
Calamus acehensis (Rustiami) W.J.Baker
Calamus adspersus Blume
Calamus affinis (Becc.) W.J.Baker
Calamus aidae Fernando
Calamus albidus L.X.Guo & A.J.Hend.
Calamus altiscandens Burret