OLEACEAE • ASCLEPIADACEAE 251 



SYRINGA— continued 



S. pinnatifolia. VinmLtelAlac. 8. May. D. Ls. pinnate; Iflts. ov., lane, i|, 



stalkless, terminal ones often attached to common stalk by part of blade. 



Fls. white, in small panicles up to 3 long. China. (Fig. 8 E.) 

 S. reflexa. 9. June. D. Ls. ov., lane, 8, tapering base. Fls. deep pink, in 



narrow drooping panicles up to 8 long. China. 

 S. villosa. 10. May-June. D. Ls. ov., lane, 6, rounded or tapering base, 



scattered hairs below. Fls. lilac-rose, in large terminal and axillary 



panicles up to 10 long. China. (Fig. 69 H.) 

 S. vulgaris. Common Lilac. 20. May. D. Ls. ov., 6, rounded or heart- 

 shaped base, hairless. Fls. lilac, fragrant, the panicles in pairs from 



terminal buds. East Europe. (Fig. 69 E.) 



Variety alba. Fls. white. Winter buds yellowish green. 



Variety purpurea. Fls. purple. Winter buds brown. 



Many other varieties in cultivation, with fls. of varying shades of 



colour from white to deep purple. 



Family 67. APOCYNACEAE. K (5), C (5), A5, G (2) 



Climbing or trailing plants. Stems with milky juice. Ls. opposite, entire, hair- 

 less, midrib and veins rather broad. Fls. showy, twisted in bud. 



* Mandevilla suaveolens. 12. June-September. D. Climber. Stems hollow, 

 hairless. Ls. ov., 3, long-pointed, heart-shaped, tufts of white down in vein-axils 

 below, long-stalked. Fls. 1 1, white, funnel-shaped, fragrant, in branched axillary 

 clusters. Fruit 12, of two narrow cylindrical seed-pods, seeds bearded. Argentine. 

 (Fig. 76 D.) 



TRACHELOSPERMUM. Climbers with hairy stems. Ls. glossy dark green, 

 blunt-ended. Fls. i, white, fragrant, in terminal branched clusters. 



* T. divaricatum (T. crocostomum). 15. July-August. E. Ls. ov., 2. Fls. with 



erect sepals. East Asia. 



* T. [Rhynchospermum) jasminoides. 12. July-August. E. Ls. lane, 3. 



Fls. with reflexed sepals. China and Japan. (Fig. 77 d.) 



VINCA. Periwinkle, Barren stems trailing, flowering ones erect. Ls. ov., 

 glossy, hairless. Fls. blue. 



V. major. Greater Periwinkle. 2. April. E. Ls. 3. Fls. i|, with linear sepals. 



Europe (including Britain) and West Asia. (Fig. 77 a.) 

 V. minor. Lesser Periwinkle. \. April. E. Ls. 2. Fls. i, with lane sepals. 

 Europe (including Britain) and West Asia. 



Variety argenteo-variegata. Ls. blotched with white. 

 Variety aureo-variegata. Ls. blotched with yellow. 



Family 68. ASCLEPIADACEAE. K (5), C (5), A (5), G (2) 



Climbers. Stems with milky juice, twining. Ls. opposite, entire. Seed-pod 

 large, seeds with tufted hairs. 



* Araujia sericofera (Physianthus albens). 20. July. E. Ls. ov., lane, 4, 

 pointed, square-cut at base, pale green above, minutely felted below. Fls. |, 



