...cassia auriculata, that's even weaker hairdye than the obovata version. I found this info from web:

"Prior to 2016 when one ordered ‘cassia’ from henna exporters in India, Cassia obovata was provided. By 2020,
suppliers changed to Cassia auriculata, often without informing their clients, or knowing themselves that there had
been a change in raw supplies. The information here will help you determine which plant you have and how to
adjust to the difference. At present, Ancient Sunrise® only has Cassia auriculata in stock and has not yet found a
new source for Cassia obovata, Senna italica, which has decreased in commercial production."
hennaforhair.com
http://www.hennaforhair.com › ...(PDF
Ancient Sunrise® Clarity, Cassia auriculata - Henna for Hair)