130 OLKACEAE 



SYRINGA. Lilac. 



Deciduous shrubs with pale wood with small ducts, some- 

 what larger and more crowded in spring, and fine but distinct 

 medullary rays; round twigs somewhat compressed or fluted 

 beneath the nodes or rather 4-angled; roundish continuous 

 pith; opposite crescent-shaped somewhat raised leaf-scars with 

 a transverse compound bundle-trace; ovoid sessile buds, the 

 terminal usually wanting, with several pairs of scales; rather 

 ovate petioled leaves, entire or pinnately lobed or dissected; 

 small salver- or funnel-shaped perfect gamopetalous flowers in 

 ample panicles; and 2-valved oblong flattened few-seeded cap- 

 sules. 



1. Leaves rough-margined, whitened beneath: buds large, 



with brown scales: twigs warty. S. villosa. 



Leaves scarcely rough-margined. 2. 



2. Leaves pale beneath: calyx white. v S. amiirensis. 

 Leaves green beneath. 3. 



3. Leaves cordate: buds round-ovoid, red or green. S. vulgaris. 

 Leaves acute at base: buds pointed, brown. 4. 



4. Leaves elongated-ovate. (Rouen lilac). X S. chinensis. 

 Leaves narrowly lanceolate. 5. 



5. Leaves not lobed (Persian lilac). S. persica. 

 Leaves, or some of them, lobed. S. persica laciniata. 



FORESTIERA. Swamp Privet. 



Deciduous shrubs or small trees with rather hard white 

 wood with minute diffused ducts and very fine medullary rays; 

 more or less 4-sided often pungent twigs; roundish homogene- 

 ous pith; opposite somewhat raised small transversely ellipti- 

 cal or lens-shaped leaf-scars with 1 rather large bundle-trace; 

 no stipule-scars; superposed rounded sessile buds with 2 or 3 

 pairs of exposed scales; simple stalked yellowish flowers in 

 nearly sessile lateral clusters; and rather small drupes pointed 

 at both ends. (Adelia). 



Twigs glabrous. F. acuminata. 



Twigs pubescent. F. -ligustrina. 



