Figure 5-12

FIG. 5-12. Duchesne constructed the genealogical tree of strawberries to illustrate his theory that all the large -fruited species had evolved from a single ancestor, the wood strawberry, Fragaria vesca silvestris, or its variant, the everbearing strawberry, Fragaria semperflorens. Geneticists agree that on the whole he was correct. (by Duchesne)