The Orechid Ignem is a seperate version of the Orechid designed to provide nether ores instead, API wise it should function identically to current Orechid support only using the addOreWeightNether function instead of addOreWeight. Usage example in Botania API can be seen here.

1.10.2 isn't supported anymore / Issue has been fixed in 1.12 (last I checked, botania isn't 1.12)