In this photo the node on the young Cissus quadrangularis stem has both leaf and tendril growing from it. The two emanate from opposite sides of the stem. The concave or sunken sides of the stem surface between the four stem ridges can be seen, even with a jaunty natural twist in the growth of one internode. The stem ridges are slightly translucent here and straight, unlike on the internodes at the stem tips (Wikipedia).
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