Latin word for 'comma'

[John Edmondson]

Stearn does not provide an exact equivalent for 'comma', which I would argue is Greek rather than Latin and is only found in scientific Latin as an epithet. French readers will recognise the term 'virguliformis', which is my preferred term. 
 
After Stean, I would suggest that the best Botanical Latin reference source (but only for Russian readers) could be "Russko-Latinskiy Slovar Dlya Botanikov" (Russian-Latin dictionary for Botanists) by Kirpichnikov and Zabinkova. This gives 'virguliformis, e' as the definition.

JOHN EDMONDSON