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<taxonx xmlns:dc="http://digir.net/schema/conceptual/darwin/core/2.0" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<taxonxHeader>

<mods:mods>

<mods:titleInfo><mods:title>A Synopsis of the Rattans (Arecaceae: Calamoideae) of Laos and Neighbouring Parts of Indochina</mods:title></mods:titleInfo>

<mods:name>

<mods:namePart type="family">Evans</mods:namePart>

<mods:namePart type="given">T.</mods:namePart>

<mods:namePart type="family">Sengdala</mods:namePart>

<mods:namePart type="given">K.</mods:namePart>

<mods:namePart type="family">Thammavong</mods:namePart>

<mods:namePart type="given">B.</mods:namePart>

<mods:namePart type="family">Viengkham</mods:namePart>

<mods:namePart type="given">O.V.</mods:namePart>

<mods:namePart type="family">Dransfield</mods:namePart>

<mods:namePart type="given">J.</mods:namePart>

</mods:name>

<mods:originInfo>

<mods:dateIssued>2002</mods:dateIssued>

<mods:publisher>Kew Bulletin, Vol. 57, No. 1 (2002), pp. 1-84</mods:publisher>

</mods:originInfo>

</mods:mods>

</taxonxHeader>

<taxonxBody>

<treatment rank="species">

<nomenclature>

<name>Calamus ceratophorus</name>

<author>Conrard</author>

<citation>Notul. Syst. (Paris) 7: 24 (1938)</citation>

<type>Vietnam, Nhatrang; Poilane; 5054</type>

<type_loc>Holotype P</type_loc>

<bibref>Evans et al., Rattans Lao PDR: 33 (2001)</bibref>

</nomenclature>

<div type="distribution"><p>Indochinese endemic, known only from the type locality.</p></div>

<div type="materials_examined"><p>Vietnam (South Annam): Nhatrang Province, La Mere et l'Enfant, undated, (pist.), Poilane 5054 (P).</p></div>

<div type="biology_ecology"><p>Unknown.</p></div>

<div type="discussion"><p>This species perhaps belongs in Section VIII of Beccari (1908) and thus section Macropodus of Furtado (1956). The neuter flower sits on a slender projection about 2 mm tall arising on one side of the strongly pedicellate involucrophore, making the female rachillae very distinctive within Indochina. They closely resemble those of the Sulawesi species Calamus pedicellatus Becc. ex Heyne (see Kramadibrata &amp; Dransfield 1992), but that species has a short, erect inflorescence and different leaf sheath armature. The sheath and leaves of C. ceratophorus look rather similar to some C. poilanei so great caution should be used in identifying sterile material lacking climbing organs. The leaflet surfaces lack bristles in the type of C. ceratophorus and further material may show that this is a reliable diagnostic feature. Vu Van Dung &amp; Le Huy Guang (1996) give detailed notes on the habitat and uses for this species which otherwise remains known only from the type. Without published information on the voucher specimens this important information remains of limited value to other users.</p></div>

<div type="vernacular"><p>None recorded.</p></div>

<div type="uses"><p>None recorded.</p></div>

<div type="conservation"><p>Unknown, but the species should be considered at high risk until its distribution, ecology and abundance are better known.</p></div>

</treatment>

</taxonxBody>

</taxonx>