Why would they? Are you choosing these plants at random or do you have any indication they may contain harmalas or other compounds of interest?
A quick search did not yield anything of particular interest, I saw these species are sometimes infected with different toxic fungus, and that they have tremorgenic terpene alkaloids. It doesn't sound promissing at all, but I might have missed something, so let me know if you have any other info of interest.
Also I noticed you were talking in another thread about using this to orally activate Phragmites spp. I'd also be very careful with consuming plants that have such a varied alkaloid content as Phragmites. Just because it has been shown to contain tryptamines doesn't mean it's safe to consume (or that even if it was safe, that it contains useable amounts)
I'd highly suggest you specially don't consume it orally in crude form, and that you do some tests like
TLC on extracts from the plant before considering consuming it.