Extended tissue in Petiole of Fern

T.S. of fern petiole, staining with safraninin which extra growth of tissue has been seen upto up epidermis through foldscope. . Small bundle of sheath and hairs coming out from epidermis are focused under foldscope.

T. S. of Fern Petiole

T.S. of PETIOLE of Fern without staining., Phloem tissue is made sieve tubes, companion cells are phloem parenchyma.
https://microcosmos.foldscope.com/wp-content/uploads/2018/10/video_20181011_152035.mp4