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Fig. 3 | Botanical Studies

Fig. 3

From: Vessel elements of two thelypteroid ferns-part I

Fig. 3

b Vessel elements of costa (Ampelopteris prolifera) showing reticulate thickening at its lateral wall. a Branched vessel elements from macerated root–rhizome junction. ce (petiole L.S. of Thelypteris interrupta). c Vessel–vessel connection of unstained section. d Vessel element–vessel element connection in polarized light. e Enlarged view of single vessel member—lignified wall glittering in polarized light and the endwall portion empty (blacken part) due to the absence of lignified tissue (Abbreviations used: Rt reticulate thickening, EW endwall, V–V two vessel members are joined end to end)

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