ID'd at the time as M. tilingii, but looking at the keys I don't see much here to distinguish this from M. guttatus. Flowers were not in a raceme if I recall correctly, but I feel like I've definitely seen large groups of M. guttatus that also weren't forming racemes. It does have a speckled calyx, which I'm not sure I've seen in M. guttatus, but M. guttatus is so ridiculously variable that it's hard to rule out.