98 



1 1.— STR ANVAESI A. 



1. S. Calleryana, DecHfi. in Nouv. Arch. Mus. Par. x. 179. Around 

 Canton. Fl. . 



15.— OSTEOMELES. 



1. 0. subrotunda, G. Koch; Hemsl. in Hook. Ic. PI. t, 2644 

 North Eiver. Fl. white, April. 



SAXIFEAGACEAE. 



Key to genera. 



1. Herb 4. 



Shrub or tree ... ... ... ... 2. 



2. Flowers in simple racemes ... ... 6. Itea. 



Flowers in terminal panicles or corymbs 3. 



3. Leaves dentate ... ... ... ... 5. 



Leaves entire 3. Pileostegia. 



4. Flowers irregular 1. Saxifraga. 



Flowers regular 2. Parnassia. 



5. Outer flowers large sterile ... ... 5. Hydrangea. 



All flowers similar i. Bichroa. 



1.— SAXIFRAGA. 



1. S. sarmentosa, Linn. J. ; DC. Prodr. iv. 43. 

 near Chaochaufu. Fl. white, April. 



Shekchilui village 



2.— PARNASSIA. 



1. P. Wightiana, Wall. ; Hook. f. Fl. Brit. Ind. ii. 402. Lien- 



chow River. 



Fl. white, November. 



3.— PILEOSTEGIA. 



1. P. viburnoides, Hooh.f. Fl. Brit. Ind. ii. 405. On the south- 

 west slope of Mt. Parker, Hongkong, creeping ovei 

 boulders ; on Taimoshan in similar places, Hongkong 

 New Territory ; Kwaisin, Hoifung ; Lofoushan. Fl, 

 white, September. 



4.— DIGHROA. 



1. D. febrifuga, iOTtr. J Benth. Fl. Hongk. 128. In ravines oi 

 Mt. Victoria, Mt. Gough and Mt. Parker, Hongkong: 

 Taimoshan at 1500 ft., Hongkong New Territory; 

 Namfom, N. Kwangtung. Fl. blue. May. 



5.— HYDRANGEA. 



1. H. scandens, Maxim. ; H. petiolaris, Sieb. et Zucc. ; Bot. Mag 

 t. 6788. Foot of Phoenix Mt., Swatow. Fl. white, April 



