Plant Cell Development 2

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Second developmental stage of sieve tubes, companion cells, and phloem parenchyma. “B, c, companion cells, and d, a beginning sieve tube from c and d, respectively in A. The cross-walls in d are pitted; b, phloem parenchyma grown larger.” -Stevens, 1916


William Chase Stevens Plant Anatomy (Philadelphia, PA: P. Blakiston, 1916)


TIFF (full resolution)

452×2400, 254.9 KiB

Large GIF

192×1024, 46.3 KiB

Medium GIF

120×640, 25.0 KiB

Small GIF

60×320, 9.9 KiB