Riveris's list "Flower names (obscure)" of 20 great name ideas: Aquilegia - Verbena!

Flower names (obscure)

Names missing from the official Nameberry flower name list.  Some are missing from Nameberry itself.  Neat.

Aquilegia

Hosta

Sylvatica

Lantana

Augustfolia

Thunbergia

Lobelia

Tiarella

Avens

Lobularia

Tillandsia

Azolla

Begonia is a pretty flower named for French administrator and amateur horticulturalist Michel Bégon, who was an avid naturalist but also a proponent of slavery. A rare floral choice which has never really caught on as a baby name, Begonia would certainly stand out from the Lilys and Roses. 

Begonia

Mandevilla

Torenia

Matrona

Bacopa

Cama is a rare feminine name with multiple potential origins. In Sanskrit, it relates to 'desire' or 'love,' connecting to Kama, the Hindu god of love. It may also derive from Native American languages or be a variation of the Italian 'Camilla.' In Spanish contexts, it might relate to 'bed' (cama), perhaps originally a nickname for a restful child. The name's brevity gives it a modern feel despite its ancient roots. Cama remains uncommon in English-speaking countries, making it an intriguing choice for parents seeking a distinctive, multicultural name with a gentle sound and compact form.

Cama

This name of a showy, lemony plant makes an unusual entry into the name garden. 

Verbena