Eroehorda ROSACEAE Spiraea 



1. Spiraeoideae Spirea Subfamily &%MW& (Chen Chu Mei Ya K'o) 

 Shrubs or trees: hypanthium like a shallow cup: ovary or ovaries superior: jr. 



a capsule or follicle, sometimes an achene. 



1. Exochorda Lindl. I'lMfJi ( p ai Chuan Mei Shu) 

 Deciduous shrubs with simple lvs.: fls. white, up to 5 cm. in diam., in terminal 

 racemes: hypanthium broadly turbinate: calyx 5-lobed; petals 5, clawed; stamens 

 15-30, inserted on a disk; ovary superior: fr. a 5-celled deeply furrowed bony 

 capsule; each cell with 1-2 winged seeds. 4 species, in Asia; 3 in China. (Greek: 

 exo, external; and chorde, chord, referring to the fibers on the outer part of the 

 placenta.) 



1. Exochorda racemosa (Lindl.) Rehd. Pearl Bush g|$^ (Pai Chuan Mei; White- 

 goatsucker Plum) (R.M.346). Shrub, 1-3 m. high; fls. white, III-IV; petals with 

 a short claw; fr. VII. Western China; locally in An., Che., Hon., Ku. Brush- 

 land. 



2. Stephanandra Sieb. & Zucc. 'l^Q-fcM (Hsiao Mi K'ung Mu Shu) 

 Deciduous shrubs: Ivs. 2-ranked, stipulate, serrate and often lobed: fls. in ter- 

 minal panicles, small, white on slender pedicels; calyx lobes and petals 5; stamens 

 10-20, persistent: fr. a 1-2-seeded oblique follicle. 4 species, in eastern Asia; 2 in 

 China. (Greek: Stephanos, crown; and andros, man, referring to the persistent crown 

 of stamens.) 



1. Stephanandra ehinensis Hance /M<^.1< (Hsiao Mi K'ung Mu; Millet-cavity Tree, 

 (PI. W. 1:437). Shrub, 1-3 m. high; fls. V-VI. China; locally in An., Che., Hon.) 

 Ki. Woodland. 



3. Spiraea Linn. Spirea &MUM (Chen Chu Mei Shu) 

 Deciduous shrubs with estipulate Ivs. and 5-merous fls. in umbel-like racemes or 

 panicles: hypanthium cup-shaped or bell-shaped: stamens 15-60: fr. usually of 5 

 distinct follicles: seeds numerous and minute. 80 species, in north temperate regions 

 about 50 in China. (Greek: speira, wreath.) 



Key to the Species 



a. Infl. compound: fls. pink or red 1. S. japonica 



aa. Infl. in simple umbels or umbel-like racemes. 



b. Infl. in sessile umbels, bearing few Ivs. or none 2. S. prumfolia 



bb. Infl. of umbel-like racemes on leafy branches. 

 Lvs. glabrous and glaucous. 



Lvs. obtuse, often lobed 3. S. blumei 



Lvs. acute, sharply serrate 4. S. cantoniensis 



Lvs. pubescent beneath 5. S. ehinensis 



1. Spiraea japonica Linn. f. 0*H|^lt (Jih Pen Hsiu Hsien Chii; Japanese Em- 

 broidered-chrysanthemum) (R.M.337). Shrub, 5-10 dm. high; fls. pink, VI-VII. 

 Eastern Asia; locally in An., Che., Ki., Ku. Meadows and brushland. 



2. Spiraea prunifolia Sieb. & Zucc. Bridal Wreath TMit (Hsiao Yeh Hua; 

 Laughing-face Flower) (R.M.329). Shrub, to lm.; fls. white, IV. China, Korea, 

 Formosa; locally in Ku. Cultivated, ornamental. 



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