Possible Clues:

• He dispenses simple cures their labs concocted
• Small boy stands on a border — such might get you madder!
• Practitioner of folk medicine
• That woman on Indonesian island street is a dealer in plants
• One needing time, it's said, for a cure?
• Botanical expert with itemised qualifications of female scholar?
• Medical supplier, graduate, included in that woman’s itinerary
• One selling medicinal stuff in Bath riles invalid
• Plant collector finding her way around island
• One providing simple treatment as dog run over in robbery