NYBG Press, the publishing division of the New York Botanical Garden is having a huge book sale, with 50% of its back catalogue, and 25% off botany books. NYBG ships both within the US and also internationally.
There are books on tropical plant collecting, Thomas Walter and his plants; a color atlas of plant propagation and conservation, and even books for children.
Apart from print books, there are also 56 e-book titles to buy and download, such as ‘Amaryllidaceae: Amaryllis Family‘ by Richard J Abbott; ‘Cultural Uses of Plants‘ by Gabriell DeBear Paye; and ‘New Flora of Vermont‘ by Arthur Gilman.
More info at NYBG Press