GRIN. Taxonomical details, with common names, distribution, and synonyms.
Links for Geranium psilostemon
BBC Gardening - Plant profile with horticultural details and garden uses. (1 photo)
Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zones 4a-9b) (3 photos)
Kemper Center - Plantfinder page for one of the plants growing at the Missouri Botanical Garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 4 to 9)
Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (3 photos)
Seneca Hill Perennials - One of the plants featured on this catalog page, with photo and descriptive information. (zone 5) (1 photo)
(1 photo)