por Steven Segalini hace 3 años
196
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common ancestor lignin xylem and phloem dominant sporophyte generation thick waxy cuticle stomata
Eastern Marsh Fern (Thelypteris palustris) Monilophytes leaves
Fan clubmoss (Diphasiastrum digitatum) Lycophytes leaves
Field hornwort (Anthoceros agrestis) hornworts