EXPLANATION OF PLATES 



PLATE. 



1. Branches of the variegated Shrubby Althea or Rose of Sharon (Hibiscus syriacus} 



showing solid green-leaved branches arising as bud variations. Eiverside, Cal. 



2. Variations in a Dahlia plant which have persisted during the five years of the life of 



the plant. The normal color of the flowers is deep velvety red, and the variations 

 are white and pinkish white. Riverside. Cal. 



3. Dahlia flower of Le Grande Manitou variety and a bud variation found on a plant of 



that variety. Riverside, Cal. 



4. A branch of Euonymus japonica showing the bud origin of the silver-variegated horti- 



cultural variety argenteo-variegatus. Several, if not all, of the other sub-varieties 

 of this plant originated as bud mutations. Riverside, Cal. 



5. Branches of Pittosporum tobira var. variegatum, showing green- and white-leaved bud 



variations. Riverside, Cal. 



6. A bush of Pittosporum tobira var. variegatum, which has several green-leaved and 



white-leaved branch sports. Riverside, Cal. 



7. Branches of the oleander (Nerium oleander} showing (right) the normal green 



foliage and (left) a variegated form found as a branch variation in the same 

 bush. Thermal, Cal. 



8. Winter Banana apples, showing a red and two large fruits occurring as limb variations. 



C. H. Whittum, Eaton Rapids, Mich. 



9. Prunes from a single tree of a new bud strain, the Coates 1418. Upper right, typical 



Coates 1418; lower right, typical ordinary French prune; left, four Coates 1418 

 and one ordinary French. Morgan Hill, Cal. 



10. Thompson Seedless grapes, showing (left) the normal fruit and (right) a large- 



fruited form discovered as a bud mutation and propagated by its owner. Thermal, 

 Cal. 



11. Bartlett Pears, showing (right) ordinary strain, (center) oblong strain, and (left) 



sunken section occurring as bud variations. Tehachapi, Cal. 



32. Leaves and flower buds (the edible portion) of two strains of the common artichoke 

 (Cynara scolymus) found on neighboring plants and doubtless resulting from a 

 bud variation. Riverside, Cal. 



13. A representative tree of the Washington strain of the Washington Navel orange, 



bearing heavy crops of high-grade fruit. Highgrove, Cal. 



14. Fruits showing variations occurring on a single tree of the Thomstm strain Washing- 



ton Navel orange. These variations have been propagated and each of the two 

 progeny trees are producing fruit of the same character as their several bud 

 parents, showing these forms to be true mutations. Highgrove, Cal. 



15. Characteristic trees of the Australian (left) and Washington (right) strains of the 



Washington Navel orange. Highgrove, Cal. 



16. A typical fruit of the Washington Navel orange variety and an Australian fruit found 



as a limb sport in the same tree. Highgrove, Cal. 



17. A basket of Washington Navel oranges from a tree of the Washington strain. River- 



side, Cal. 



18. Fruits of the Corrugated strain of the Washington Navel orange occurring as a limb 



mutation in a tree of the standard strain. Highgrove, Cal. 



19. Fruit of the Dry strain of the Washington Navel orange, occurring as a branch muta- 



tion in a tree of the standard strain. Riverside, Cal. 



20. Typical fruit of the Marsh strain of the Marsh seedless grapefruit. Note the desirable 



shape, thin skin, fine texture, and seedless character. Highgrove, Cal. 



21. A fruit of the Se*edy strain of the Marsh grapefruit. Highgrove, Cal. 



