Caltrop or puncture vine (Tribulus terrestris) / to thatch (a roof)
茨
=
艹
+
次
:
The King of Chu (c) wanted to pick up his cube (次) in the space station's kitchen, and he thought all he has to do is walk over sheets of artificial lawn (艹). In reality he mistook a pad of caltrop wine (茨) for the artificial lawn and soon has a lot of caltrops sticking in his feet.
Manchurian wild rice (Zizania latifolia), now rare in the wild, formerly harvested for its grain, now mainly cultivated for its edible stem known as 茭白筍|茭白笋[jiao1 bai2 sun3], which is swollen by a smut fungus / (variant of 菇[gu1]) mushroom