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Posidonia oceanica - Wikipedia, the free encyclopedia (605 words) |
 | The APG system (1998) and APG II system (2003) accept the genus as constituting the sole genus in the family Posidoniaceae, which it places in the order Alismatales, in the clade monocots. |
| Earlier systems classified this genus in the family Potamogetonaceae or in the family Posidoniaceae but belonging to order Zosterales. |
| Posidoniaceae in L. Watson and M. Dallwitz (1992 onwards) The families of flowering plants |
| Evolution of apocarpy in Alismatidae using phylogenetic evidence from chloroplast rbcL gene sequence data (2565 words) |
| However, apocarpy evolved in three clades: (1) in the clade of Lilaeaceae and Juncaginaceae; (1) in the clade of Potamogetonaceae, Zannichelliaceae and Zosteraceae; and (1) in the clade of Cymodoceaceae, Ruppiaceae, and Posidoniaceae. |
| Basal carpel connation was the ancestral character in Alismatidae, as indicated by the rbcL cladogram, and basally connate carpels evolved in two clades: (1) in Butomaceae and (2) in the clade of Aponogetonaceae and Scheuchzeriaceae. |
| Three origins of a single carpel in Najadaceae, Zosteraceae, and Posidoniaceae are indicated in the cladogram of Alismatidae. |
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