Quick question about Selaginella: ecto-/endohydric?

Doing a presentation about a Selaginella (more specifically false Rose of Jericho), and for that I need to know whether it is ectohydric or endohydric. I know it has a proto-vascular system, but I have no clue whether that already answers my question.

My brain is running on only 1 or 2 hours of sleep, so if anyone could help me with this it would be fantastic.