Obituaries and tributes
Donovan Kirkwood, South African botanist, dies at 54 in expedition accident
In late August, high in South Africa’s Jonkershoek Mountains, a small group of botanists picked their way across steep ground in search of one of the world’s rarest plants. They were surveying Penaea formosa, a critically endangered shrub thought to number fewer than 50 individuals. Donovan Kirkwood, curator