Where does “bulbar” come from?

I can't write this etymology summary because the chain provided doesn't support the word "bulbar." The chain shows only suffixes (-arius, -alis, -arios, -yós) with no root morpheme, making it impossible to construct a valid etymology for "bulbar" or explain its sense development. A complete chain would need to include the root element (bulb-) and its etymological progression.

bulbar (English): Relating to, or having the form of a bulb; used...

Definitions

  1. Relating to, or having the form of a bulb; used...

Ancestry of “bulbar”, step by step

bulbar traces back through 3 separate lines of ancestry.

via English bulb

StepLanguageWordMeaning
1EnglishbulbAny solid object rounded at one end and tapering...
2Latinbulbusbulb
3Ancient Greekβολβόςbulb of various plants, especially onion; tassel...

via Spanish bulbo

StepLanguageWordMeaning
1Spanishbulbobulb

via French bulbaire

StepLanguageWordMeaning
1Frenchbulbairebulbar

Words derived from “bulbar

Every word from Ancient Greek βολβός