Where does “racemosely” come from?

racemosely (English) comes from English racemose, from Latin racēmōsus, from Latin -ōsus, from Old Latin -ōssus.

racemosely (English): In a racemose manner

Definitions

Step	Language	Word	Meaning
1	English	racemose	Having flowers arranged along a single central...
2	Latin	racēmōsus	—
3	Latin	-ōsus	—
4	Old Latin	-ōssus	—

racemosely — Etymology, Origin & Word History | Etymology Explorer