Cynoglossum

• Botany.com: Cynoglossum - Hound's Tongue  - Presents information on the features of the plant. Includes potting, propagation, variesties and images.
• Florabase: Cynoglossum  - Contains information on the identity of the plant. Includes reproduction, Inflorescence and flower features, fruit and seed features.
• Missouri Botanical Garden: Cynoglossum amabile  - Provides information on the distinguishing properties of the plant. Includes culture, noteworthy characteristics, problems and uses.
• Missouriplants: Cynoglossum virginianum L. - Wild Comfrey  - Provides information on the distinguishing characteristics of the plant. Includes habitat, flowering and photos.
• Montana Plant Life: Hounds-tongue Cynoglossum officinale L.  - Contains information on the distinguishing features of the genus. Includes history, flowers and images.
• PlantzAfrica.com: Cynoglossum hispidum  - Contains information on the distinguishing of the plant. Includes history, distribution, ecology, cultural value and images.
• The Seed Site: Cynoglossum amabile  - Provides information on the botanical classification, seed sowing, germination and images.
• United Sates Department of Agriculture: Cynoglossum officinale L. gypsyflower  - Offers information on the profile of the plant. Includes distribution, growth habit, classification and images.