Question: Which plant has more species, Barklya or Ajuga?

Context paragraphs:
Barklya: Barklya is a genus of Australian trees in the legume family, Fabaceae.  It belongs to the subfamily Caesalpinioideae.  The sole species is Barklya syringifolia, commonly known as the leather jacket or crown of gold tree.  It grows in rainforest to 18 metres tall.  Recorded from Queensland and New South Wales in vine forest and softwood scrub.  It is often used as an ornamental.  It may be extinct in New South Wales.

Ajuga: Ajuga , also known as bugleweed, ground pine, carpet bugle, or just bugle, is a genus of 40 species annual and perennial herbaceous flowering plantsin the mint family Lamiaceae, with most species native to Europe, Asia, and Africa, but also two species in southeastern Australia.  They grow to 5–50 cm tall, with opposite leaves.

Ajuga chamaepitys: Ajuga chamaepitys is a species of flowering plant of the family Lamiaceae.  Popularly known as yellow bugle or ground-pine, the plant has many of the same characteristics and properties as "Ajuga reptans".  "A. chamaepitys" can be found in Europe, the Eastern part of the Mediterranean, and North Africa.

Supporting paragraphs: Barklya Ajuga
Answer: Ajuga