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. 2012 Nov 20;112(8):1553–1566. doi: 10.1093/aob/mcs246

Fig. 6.

Fig. 6.

Patterns of flower-subtending bract (FSB) reduction in the order Alismatales. (A) Species of Potamogeton with bracteate inflorescences; (B) species of Potamogeton with non-bracteate inflorescences where FSBs are suppressed; (C) Potamogeton densus with ‘hybrid’ organ formed by the FSB and outer tepal; (D) species of Triglochin with non-bracteate inflorescences where FSBs are suppressed; (E) Triglochin maritima with ‘hybrid’ organ formed by the FSB and outer tepal; (F) species of Tofieldia with bracteate inflorescences; (G) Tofieldia pusilla with ‘hybrid’ organ formed by the FSB and calyculus phyllome. Closed circles indicate inflorescence axis, black arcs show morphologically expressed FSBs, dashed-lined arcs indicate suppressed FSBs and grey arcs show ‘hybrid’ organs. Numbers indicate the sequence of organ initiation.