Charles Christopher Parry

1823 (Admington, England) – 1890 (Davenport, Iowa)

Parry trained as a doctor (doctors then needing to know about the medicinal properties of plants), but taught by Torrey (who had a similar background), then turned to botany. Torrey and Gray both became lifelong friends and professional colleagues; Engelmann too. He made friends with Hooker (who respected him greatly) on a visit back to England.