Professor Lasky

Professor Sarah Lasky was a scientist, a thremmatologist, who developed a new species of plant called the Vervoids. She met the Sixth Doctor and Melanie Bush aboard the Hyperion III in 2986. After her Vervoids began to hatch, she tried to stop them from killing everyone on the ship, but was killed herself by a poison dart.

Biography from the TARDIS Data Core article, licensed under CC-BY-SA