There are 3 books by Herbert Parkes Riley on BookOrb. A strong starting point is Families of flowering plants of Southern Africa (1963). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Herbert Parkes Riley written?
BookOrb lists 3 books by Herbert Parkes Riley.
Where should I start with Herbert Parkes Riley?
A good starting point is Families of flowering plants of Southern Africa (1963).
What is the Herbert Parkes Riley books in order list?
In publication order: 1. Families of flowering plants of Southern Africa (1963), 2. Families of the flowering plants of Southern Africa (1963), 3. The Aloineae (2014).