46 SAXIFRAGACEAE 



used in gardening; the source of gooseberries and garden 

 "currants" (real currants being the small seedless Corinthian 

 grapes often used in pastry) ; and comprising several of the 

 most showy shrubs employed in landscape work. 



PHILADELPHUS. "Syringa." Mock Orange. 



Deciduous shrubs with often exfoliating brown bark; 

 white firm wood with minute diffused ducts and fine medullary 

 rays; moderate or slender more or less 6-sided twigs; rounded 

 or 6-sided continuous pith; opposite (exceptionally in whorls 

 of 3) raised membranous leaf-scars usually concealing the 

 buds, with 3 prominent bundle-traces; ovoid sessile buds with 

 few evident scales; lanceolate or ovate petioled mostly remote- 

 ly denticulate or toothed simple leaves; rather large perfect 

 polypetalous white or creamy stalked flowers, a few from each 

 upper axil or subpanicled; and few-seeded small turbinate in- 

 ferior capsules long surmounted by the calyx segments. 



1. Leaves small (scarcely 4 cm. long). 2. 

 Leaves mostly large (over 5 cm. long). 3. 



2. Leaves pubescent. P. hirsutus. 

 Leaves glabrate. X P. Lemoinei. 



3. Bark distinctly and early flaking away. 4. 



Bark tardily flaking: flowers scarcely fragrant. 11. 



4. Flowers very fragrant. 5. 



Flowers not, or little, fragrant, white. 9. 



5. Flowers creamy. (P. coronarius). 6. 

 Flowers white. (X P. Lemoinei). 8. 



6. Leaves green. 7. 



Leaves yellow. P. coronarius aureus. 



Leaves pale-margined. P. coronarius argenteo-marginatus. 



7. Flowers single. P. coronarius. 

 Flowers double. P. coronarius flore plena. 



8. Flowers single. X P. Lemoinet. 

 Flowers double. X P. Lemoinei flore plena. 



9. Flowers 1-5 on a shoot. 10. 



Flowers 5-9 on a shoot. X P. Zeyheri. 



