The Orokin Derelicts are Orokin shi

The Orokin Derelicts are Orokin ships that have been taken over by the Technocyte virus. The white plants seen as decoration in the Void have been infected, causing them to grow out of control. The trees destroy the ship from the inside, rendering it helpless against raiders, as seen when the Grineer/Corpus pay a visit. The ship is not without its fair share of danger, however, as the Infested have made a home here. The Derelicts may have been test sites for the original virus, which would explain the extremely developed state of Lephantis, or simply could not escape into the void in time when the Technocyte virus was released against the Sentients.