Photinia ROSACEAE Mains 



4. Photinia serrulata Lindl. Sfi (Shih Nan; Rock Machilus) (R.M. 384). Tree, 5- 

 10m. high; fls. white, V-VII; fr. red, small, X. China; locally in An., Che., 

 Ku. Grave land. Fig. 162. 



5. Photinia davidsoniae Rehd. & Wils. fl/K (Lo Mu) (R.M. 385). Tree, to 8 m.; 

 fls. white, V; fr. red, larger, X. Central China; locally in An., Che., Ku. 



Forest. 



6. Photinia glabra (Thunb.) Maxim. (R.M. 385). Shrub, to 3 m.; fls. white, V; 

 fr. red, X. Japan and China; locally in Che., Ki. Forest. 



22. Sorbus Linn. Mountain Ash ~itWMB> (Hua Ch'iu Shu Shu; 



Flowering Catalpa Genus) 

 Deciduous small trees or shrubs with simple (ours) or pinnately compound lvs.: 

 fls. white or pink, m compound clusters: fr. a small berry-like pome, closed at the 

 top; carpels cartilaginous, more or less free, each with 1-2 seeds. 80-100 species, in 

 the northern hemisphere; about 40 in China. (An old Latin name.) 



Key to the Species 



Lvs. glabrous beneath, or with a few hairs along the veins. 



Veins not conspicuously depressed above: styles usually 2 1. <S. alnifolia 



Veins conspicuously depressed above : styles 5 2. S. calonetira 



Lvs. white-tomentose beneath 3. S. folgneri 



1. Sorbus alnifolia (S. & Z.) K. Koch 7 ]kWi (Shui Yu; Water Elm) (R.M. 380). Tree, 

 to 20 m.; fls. V; fr. red or yellow, IX-X; lvs. unequally serrate. Central China, 

 Korea, Japan; locally in An., Ki. Forest. Fig. 163. 



2. Sorbus caloneura (Stapf) Rehd. (R.M. 381). Shrub or tree, to 6m.; fr. brown, 

 IX. Central China; locally in Ki. Forest. 



3. Sorbus folgneri (Schneid.) Rehd. ^JKm (Shih Hui Shu; Lime Tree) (R.M. 381). 

 Tree, 6-12 m. high; fls. V; fr. red, X. Central China; locally in An., Ki. 

 Forest. 



23. Malus Mill. Apple M$kH (P'in Kuo Shu) 

 Deciduous trees or shrubs with simple serrate or lobed lvs.: fls. in umbel-like 

 racemes, white, pink or red; styles united at the base: fr. an apple- shaped pome, with 

 few grit cells or none. About 25 species, in north temperate regions; 10-15 in China. 

 (From the Latin name for "apple".) 



Key to the Species 



a. Calyx deciduous in fr. 



Calyx-lobes narrow-lanceolate, longer than the tube, brownish: 

 petioles and veins of the lvs. pubescent: styles 5, rarely 4; 



fls. white 1 • M. baccata 



Calyx lobes triangular-ovate, shorter than the tube or as long, 

 purple: lvs. glabrous or nearly so. 

 Styles 3, rarely 4; calyx lobes acute or acuminate: young brts. 



grayish or brownish: fr. globose: fls. white or pinkish 2. M. hupehensis 



Styles 4 or 5; calyx lobes obtusish: young brts. purple: fr. 



pyriform : fls. bright rose 3. M. halliana 



aa. Calyx persistent in fr. 



170 



