Need an Illustrator for sepia drawings

we seek an artist capable of rendering botanical images, in exquisite detail, along the lines of Darwin or Audubon naturalistic style for uses including product labeling, catalogs, websites, etc. Deliverables must be vector based and scalable. Items to include roots, plants, rhizomes, mushrooms, flowers, etc Examples of work requested along with pricing per image. Rough example of Morel Mushroom attached for guidance