This feminine form of Abel is also a flower name and makes a distinctive alternative to the widely used Abigail.  There is a similar name, Adelia, that is beginning to be rediscovered thanks to the trend for all names Adel- related.

Abelia

Has a bit of a trade name feel, as in failed cable service.

Adelphia

Name of an Old Testament soldier that's been also used as a girls' name in modern Israel. An alternate spelling is Adinah. Some mistake Adina and Adinah to be the root of Dinah, but the Biblical name Dinah is borne by a different figure and has a different meaning. You can consider the modern short forms Dena and Dina as stemming from either Adina or Dinah.

Adina

Alyxia

Acer

Adamea

Adenium

Adenoa

Aidia

Aliella

Aluta

Alyssum

Andira

Antillia

Astelia

Azima

Azolla

Bakoa

Bellis

Benkara

Billia

Bloomeria

Blumea

Bonellia

Cintia

Calluna

Calytrix

Carex

Cassinia

Castilla

Cladium

Cleome

Cleomella

Cleonia

Clivia

Coelia

Colura

Cyanixia

Davilla

Delonix

Desmaria

Desmos

Diora

Durio

Elmera

Elodea

Eclipta

Eizia

Embelia

Emex

Eremia

Eria

Erinus

Ethulia

Evodia

Falkia

Faramea

Fernellia

Florbella

Galactia

Gennaria

Glia

Harrisia

Hesperis

Idesia

Ilex

Inula

Isabelia

Isodon

Ivesia

Ixia

Ixora

Distinctive and charming nature name that blends elements of Jacqueline and Amanda. 

Jacaranda

Justicia

Jacquinia

Jensia

Jodina

Kadsura

Kaliphora

Kelissa

Khadia

Kita

Knema

Knoxia

Laurus

Lemma

Lilium is the genus of the lily family of plants and sounds a bit botanically formal for a first name.  Try Lillia or Lilias.

Lilium

Larix

Lebeckia

Lennoa

Lenzia

Leonurus

Leuciva

Leunisia

Linaria

Lophira

Lucilia

Ludia

Luina

Lulia

Viviana's list "Plant Genera that could be names" of 192 great name ideas: Abelia - callitris!

Plant Genera that could be names