Styrax STYRACACEAE Pterostyrax 



b. Petioles 1-3 mm. long. 



Lvs. coriaceous: veins prominent. 

 Racemes many-fid.; fls. small, about 1cm. long: lvs. 



usually 7-14 cm. long 3. S. dasyanthus 



Racemes few-fid.; fls. larger, 1.5-2.0 cm. long 4. S. philadelphoides 



Lvs. membranous; veins not very prominent: racemes 



few-fid.; fls. 1.5-2.0 cm. long 5. S. faberi 



bb. Petioles 3-10 mm. long: racemes few-fid. 



Fig. and frtg. pedicels 15-25 mm. long, glabrous; calyx 



glabrous 6. S. japonica 



Fig. and frtg. pedicels. 2-5 mm. long, tomentose; calyx 



tomentose 7. S. suberifolius 



1. Styrax calvescens Perk. (E.P.IV. 241:32). Shrub or tree, to 5 m.; fls. white, IV; 

 fr. VIII-IX. Central China; locally in Che., Hup., Ki. Woodland. 



2. Styrax obassia Sieb. & Zucc. (R.M. 762). Shrub or tree, to 15 m.; fls. white, IV; 

 fr. VIII-IX. Japan, Korea, eastern China; locally in An., Che. Forest. 



3. Styrax dasyanthus Perk. ?&MTt (Ch'ui Chu Hua; Drooping-pearl Flower) (R.M. 

 762) Shrub or tree, to 8 m.; fls. white, V-VI; fr. VIII-IX. Central China; locally 

 in An., Che., Hup., Ki., Ku. Woodland. 



3a. Styrax dasyanthus var. cinerascens Perk. (Pl.W. 1: 289). China; locally in 

 Che., Hun., Hup., Ki. 



4. Styrax philadelphoides Perk. Mountain Cherry Storax (E.P.IV. 241: 32). Shrub 

 or tree, to 6m; fls. white, V; fr. VIII. Eastern and central China; locally in 

 An., Che., Hup., Ki., Ku. Woodland. Fig. 291. 



5. Styrax faberi Perk. (E.P.IV. 241: 33). Shrub, to 3 m.; fls. white, V; fr. VIII. 

 Eastern and central China; locally in An., Che., Hun., Ki., Ku. Woodland. 



6. Styrax japonica Sieb. & Zucc. (R.M. 761). Shrub or tree, to 10 m.; fls. white, 

 V; fr. VIII. Japan, China; locally in An., Hon., Hun., Hup. Ki. Woodland. 



7. Styrax suberifolius Hook. & Arn. (Be.F. 213). Tree, to 20 m.; fls. white, VI; 

 fr. VIII-IX. Southeastern Asia; locally in An., Che., Hup. Ki. Forest. 



The characters used in the key to species, e.g. leaf -texture and leaf-size, as well as number 

 and size of flowers, have proven so variable that results were not very satisfactory. There 

 seem to be in S. faberi and S. philadelphoides elements requiring further separation. 



2. Alniphyllum Mats. Mt^M (I Ch'ih Yang Shu) 

 Shrubs or trees with red or white 5-merous fls. in axillary or terminal racemes; 

 stamens 10, monadelphous; ovary 5-celled, more or less superior; fr. a narrowly ob- 

 long lobed woody capsule with numerous winged seeds. 3 species, in eastern Asia; 2 

 in China. (Latin: Aim; Alnus: and phyllum, leaf; indicating that the leaves resemble 

 those of Alnus.) 



1. Alniphyllum fortunei (Hemsl.) Perk. giffcft (I Ch'ih Yang; Resembling-red Poplar) 

 (Lee 913). Tree, to 25m.; fls. white or tinged purple, V; fr. VIII. China; locally in 

 An., Che., Ki, Ku., Forest. 



3. Pterostyrax Sieb. & Zucc. rWffM (Pai Hsing Shu Shu) 

 Deciduous trees or shrubs with fragrant 5-merous fls. in large panicles which 

 terminate short lateral brts. ; calyx teeth persistent; stamens 10, exserted; filaments 

 more or less united; ovary 3- (or 4-5-) celled, inferior or nearly so: fr. a dry fluted 



3Q6 



