Not much to go on. There are 23 asters in Texas. I have mentioned how important close ups of stems, leaves, involucres and phylaries are. The involucres in both these photos are shaded, and blurry, and hard to read. In most of your photos the involucres are shaded and blurry, and not usefull for identification. You are there, in the field, next to the plant. No reason you can't adjust the angle to get better shots, while you're there? Not much foliage to go on either.