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| | Campbell, Lisa M.*, Dennis Wm. Stevenson, Jerrold I Davis, and Christopher R. Hardy. (Site not responding. Last check: 2007-10-09) |
 | | In traditional systems of classification it has been suggested that this genus is related to Commelinaceae based on poricidal anther dehiscence and the operculate seeds, or to Xyridaceae based on parietal placentation and orthotropus, tenuinucellate ovules. |
 | | However, subsequent data has shown that seed operculum development differs between Mayaca and Commelinaceae, and that Xyridaceae are variable in ovule development and orientation, as well as placentation. |
 | | Despite this, Mayaca and Xyridaceae share an exothecium, a feature not known to occur in Commelinaceae. |
| www.botany2001.org /section12/abstracts/189.shtml (224 words) |
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