48 SAXIFBAGACEAE 



11. Flowers single. D. scabra Watereri. 

 Flowers double. D. scabra plena. 



12. Leaves blotched. D. scabra marmorata. 

 Leaves white-dotted. D. scabra punctata. 



DECUMARIA. 



Deciduous woody plants climbing by aerial roots, with 

 moderately slender more or less- angled or compressed twigs; 

 angular spongy pith; opposite somewhat raised U-shaped leaf 

 scars at first half-round by a deciduous membrane, with 3 

 bundle-traces; no stipule scars; conical hairy superposed buds 

 with indistinct scales; moderately large ovate petioled leaves; 

 small perfect polypetalous white flowers in terminal corymbs; 

 and small top-shaped ribbed capsules. 

 Leaves glabrous, sometimes serrate above. D. barbara. 



SCHIZOPHRAGMA. 



Deciduous shrubs climbing by aerial roots, with moderate- 

 ly slender terete twigs; round continuous pith; opposite low 

 broadly crescent-shaped leaf-scars with 3 bundle-traces; no 

 stipule-scars; rather large petioled leaves; small white perfect 

 polypetalous flowers in broad terminal clusters surrounded by 

 neutral flowers with a single large sepal; and small inferior 

 many-seeded capsules. 

 Leaves round-ovate, toothed. S. hydrangeoides. 



HYDRANGEA. 



Deciduous shrubs usually sparingly or coarsely branched, 

 exceptionally climbing by aerial roots, often with shredding 

 bark, with nearly terete twigs; relatively large round homo- 

 geneous pale pith; low crescent-shaped to half-round or trian- 

 gular leaf-scars, opposite or in whorls of three, with 3 or in 

 some cases 5 or 7 bundle-traces in a single series; no stipule- 

 scars; oblong solitary subsessile buds usually with several 

 pairs of scales; rather large simple toothed or lobed stalked 

 leaves; small perfect polypetalous flowers in compound termi- 

 nal clusters often surrounded by showy sterile ones; and small 

 inferior capsules. 



