Maybe some of the relatively easy to grow and more consistent acacia species are to blame.

I've been wondering why most grass I have tried has been so distinctly euphoric. After some research, I have come to the conclusion that Hordenine contributes significantly to euphoria.

İt is usually considered an unwanted alkaloid, however, it seems to have some valuable pharmacological and healing properties. As a strong mao-b inhibitor, for example, it bestows an extra focus, clarity, groundedness, and has neuroprotective effect. Of course, we don't know the healthy dose or ratio of alkaloids in a brew are, and I am also not clear what it's differences are from n methyl tyramine, the second most prevalent tyramine in phalaris. Too much is likely dangerous with mao inhibitors, but what is the window is unknown. My dangerous experiences could have been from a high dose of either or both tyramines, and/or 5 MeO DMT, (in combination with high dose syrian rue).

Apparently, both these tyramines are found in barley grass, a purported super health food.

And Hordenine is also found in cacti, and san pedro has been proven to be reasonably safe in combination with syrian rue.

It's about two months since planting my phalaris. They are all steadily growing and becoming more robust. Th strain of brachy which is from a distant area has started showing some drying of leaves, and it's not from lack of water. I wonder if it could be from too much water and/or humidity, as the region I had encountered it's wild form was a drier place.

The time is approaching for bioassays... Really exciting. What are the alkaloid profiles of these 3 brachy strains? Any 5-MeO-DMT? If so, is that good or bad? Any gramine? What is the n,n concentration?

As for aquatica and truncata, I plan to drink them without rue. I highly suspect that this will be the proper way to go with them. In the spring I had drank truncata alone and experienced a warm healing effect. The winter alkaloids apparently are higher.

It is possible that some molds have taken hold of the grass. Did you check for that ?

Brachystachis is an annual species, iirc. It's possible that the growth cycle of the plant is driven by day length and you're merely seeing it respond to winter by, er, dying. The dried up leaves might be worth an extraction, at least for TLC analysis.