This is not a common herb that I have used. I have seen it hanging from trees when visiting an island off the coast of Florida. Its botanical name is Tilandsia usneiodes. It does grow on large trees. I read that it flowers but I have never seen it flower, nor have I used it.
One of my diabetic patients started to use it as a tea to decrease her blood sugar levels. There are many plants that do lower blood sugar as gymnema, bitter melon, and even cinnamon. This patient used it combined with prickly pear and had a reduction in her blood sugar. I would not use it alone but in combination with other herbs as above,
I also use supplements a chromium, vanadium and alpha lipoic acid to decrease glucose levels. After reading about Spanish Tea Moss I saw many articles relating this herb to helping rheumatism and joint pain/inflammation