The mushroom flesh turns grayish-green to greenish black with a drop of FeSO 4, and olive to greenish black with KOH or NH 4 OH.
12.
Another impediment was a layer of super-hard, fine-grained greenish black rock called diabase, which slowed the drilling until a massive chisel broke through.
13.
One measure of the twister's force was its brief duration : less than a minute, according to witnesses, who had noticed the sky turn a greenish black just before the funnel cloud struck around 7 p . m.
14.
Larva greenish black, with a fulvous tinge; a dorsal series of dark medallions; dorsal line pale, interrupted, with black edges; spiracular line pale like the venter . The larvae feed internally on the flowers and leaves of oak trees.
