This is an OCR edition without illustrations or index. It may have numerous typos or missing text. However, purchasers can download a free scanned copy of the original rare book from GeneralBooksClub.com. You can also preview excerpts from the book there. Purchasers are also entitled to a free trial membership in the General Books Club where they can select from more than a million books without charge. Volume: 113; Original Published by: Carnegie Institution of Washington in 1909 in 224 pages; Subjects: Desert plants; Botany; Phytogeography; Plant distribution; Nature / Plants; Science / Life Sciences / Botany;