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Pollen evolution and its taxonomic significance in Cuscuta (dodders ...

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M. Welsh et al.<br />

Fig. 2 Colpi number optimized<br />

onto a summary consensus tree<br />

result<strong>in</strong>g from three molecular<br />

phylogenies of <strong>Cuscuta</strong> based<br />

on nuclear ITS <strong>and</strong> plastid<br />

trn-LF sequences (García <strong>and</strong><br />

Mart<strong>in</strong> 2007; Stefanović et al.<br />

2007; Stefanović <strong>and</strong> Costea,<br />

personal communication).<br />

<strong>Pollen</strong> gra<strong>in</strong>s with 5–8 colpi<br />

have evolved only <strong>in</strong> subg.<br />

Monogynella <strong>and</strong> <strong>in</strong> clade O<br />

of subg. Grammica<br />

123

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