Diario de sageost

As shown in the observation below, there is a way to identify R. obtusifolius. and R. crispus. using seedheads, which i had figured out but others may want to learn.
https://www.inaturalist.org/observations/237331610
essentially obtusifolius has spikier seeds than crispus is what is shown and the seeds take a different shape. additionally obtusifolius has deeper veining on the seed heads.
so yah! feel free to use this for whatever!

I do a lot of identifications in China and have gotten to know the species in the area fairly well, which is how I noticed this observation:https://www.inaturalist.org/observations/237817971 which was observed by @redthird, a observer I do identifications for very often and follow on the site.
After doing some research I noticed that the caterpillar of a Papilo butterfly was not matching up with any of the subspecies that I had seen nearby until I found ssp chaon, which had only really been observed higher up on the map. I did a deep dive and found this range map:https://yutaka.it-n.jp/pap/10580010.html which though using specimines from thailand, said that the species ranges into China, and this specimen, though on the boarder of its range was matching up in description of the species and its caterpillars exactly. https://inaturalist.lu/taxa/1510892-Papilio-chaon-chaon/browse_photos. The lack of data on this species has raised concern that this species may be more common than this site's data implys.