Deutzia SAXIFRAGACEAE Ribes 



Key to the Species 



Petals imbricate in the bud 1. D. maliflora 



Petals valvate in the bud 2. D. scabra 



1. xDeutzia maliflora Rehd. (D. lemoineixpurpurascens) (R.M. 283). Shrub, to 

 2m.; fls. pinkish outside; petals imbricate. Garden origin, about 1903. Locally 

 in Ku. Cultivated, ornamental. 



2. Deutzia scabra Thunb. &££ (Sou Su) (R.M. 278). Shrub, 1-2 m. high; fls. white, 

 V; petals valvate. Japan, China; locally in An., Che., Hup., Ki., Ku. Brushland, 

 and cultivated, ornamental. Fig. 145. 



Deutzia Chunii Hu (R.M. 279) occurs in the mountainous borderland between Chekiang 

 and Kiangsu. It has flowers in an open panicle and oblong-lanceolate leaves remotely and 

 minutely serrulate. 



10. Philadelphus Linn. Mock Orange \MWit0: (Shan Mei Hua Shu) 



Erect shrubs with opposite lvs.: fls. large, white or slightly colored, fragrant; 

 sepals and petals 4; stamens many; ovary 4-celled, 40 species, of wide distribution; 

 10 or more in China. (Named for King Ptolemy Philadelphus of Egypt, 309-246 B.C., 

 a patron of scientific research.) 



Key to the Species 



Calyx glabrous outside 1. P. coronarius 



Calyx pubescent outside. 



Lvs. pubescent beneath 2. P. incanus 



Lvs. glabrous beneath 3. P. sericanthus 



1. Philadelphus coronarius Linn. W\W\±\WTt (Hsi Yang Shan Mei Hua; European 

 Philadelphus) (R.M. 271). Shrub, to 3 m.; fls. creamy-white, fragrant, VI. Intro- 

 duced from Europe; locally in Ku. Cultivated, ornamental. 



2. Philadelphus incanus Koehne [l\Mtt (Shan Mei Hua; Mountain Plum) (R.M. 268). 

 Shrub, 1-3 m. high; fls. white, VII. Western and central China; locally in Hon., 

 Ki. Brushland. 



3. Philadelphus sericanthus Koehne ^jjglLlf&ft (Chien Te Shan Mei Hua) (R.M. 269). 

 Shrub, 1-3 m. high; fls. white, V. Central and western China; locally in An., 

 Che., Ku., Ki. Rocky stream beds, and cultivated ornamental. 



11. Ribes Linn. Currant Gooseberry ^/||Hp|| (Ch'a Piao Tzu Shu; 



Tea-berries Genus) 



Shrubs with alternate, usually palmately lobed lvs.: fls. perfect or unisexual, 

 usually in racemes; calyx often colored; petals inconspicuous or wanting; stamens 

 5, alternate with the petals; ovary inferior, 1-celled: fr. a berry. 150 species, mostly 

 of north temperate regions; 35 in China. (From ribas, the Arabian name for Rheum 

 Ribes.) 



Key to the Species 



Fls. in fascicles 1. R. fasciculatum 



Fls. in slender racemes 2. R. tenue 



1. Ribes fasciculatum Sieb. & Zucc. WM^l- (Sou Shan Cha Tzu; Swamp Haw- 

 thorne) (R.M.297). Shrub, to lm.; fr. red or black, VIII-X. Eastern Asia; 



151 



