Auct. ex L.
many, see text
Calamus is a genus of the palm family Arecaceae. These are among several genera known as rattan palms. There are some 325 species in this genus, all with a palaeotropical distribution. They are mostly leaf-climbers with slender, reedy stems. To aid scrambling some species have evolved hooks on the underside of the midrib, or more commonly by modified pinnae in the form of stout, backward-pointing spines. These stems may grow to lengths of 200 metres. 
Calamus australis is known as the hairy mary.
- Calamus adspersus
- Calamus aruensis Becc. - Bamaga wait-a-while
- Calamus australis Mart.- lawyer cane, wait-a-while or hairy mary 
- Calamus caryotoides Mart. - fishtail lawyer cane
- Calamus compsostachys
- Calamus egregius
- Calamus gibbsianus
- Calamus moti F.M.Bailey
- Calamus muelleri H.Wendl. - southern lawyer vine
- Calamus obovoideus
- Calamus radicalis H.Wendl. & Drude
- Calamus rotang
- Calamus suaveolens W.J.Baker & J. Dransf.
- Calamus tenuis
- Calamus vitiensis Warb. ex Becc. - : Dunk Island lawyer vine, Mission Beach wait-a-while
- Calamus wailong
- Calamus warburgii K.Schum. - Iron Range wait-a-while
- Calamus zeylanicus
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