Pen and ink.
Reference material: herbarium specimens, use a stereomicroscope for details.
Illustrations are critically reviewed three times by authors and taxom editors for physiological and taxonomic accuracy before inking the final "plate".
Client: Flora of North America, Misoouri Botanic Gardens.
Aritst info: Lead artist for Volume 9 (Rosaceae) of "The Flora of North America", a 30-volume comprehensive survey of all flora of North America, north of Mexico.