VIBURNUM 



cymes; calyx witli J minute teeth ; corolla rotate or 

 campanulate, rarely tubular; stamens 5: ovary usually 

 1-loculed: fr. a drupe with a one-seeded, usually com- 

 pressed stone. In several species the marginal Us. cf 

 the cymes are sterile and radiant; such are V. macro- 

 cephalum, tomentosum, Opuliis, Sargenti and alnifo- 

 lium, and of the three first named garden forms are 

 known with all fls. sterile and enlarged. 



Alfred Rehder. 



1923 



2661. Vibui 



The familiar Snowball of delightful memory seems to 

 be doomed. It is too much trouble to try to keep olf the 

 aphids. Fortunately its place can be taken by a Japa- 

 nese species that is even more satisfactory. Fig. 2603. 

 The berries of the Japanese species, F. tomentosum, are 

 a brilliant scarlet, changing to black. The foliage of this 

 Snowball is also remarkably beautiful. The leaves are 

 olive-green with brownish purple or bronzy margins, 

 and their plicate character makes them very distinct 

 and attractive. The bush is entirely free from insect 

 pests. The single and double forms of the Japanese 

 species differ in the same way that is shown in Figs. 

 2664 and 2666. Unfortunately they have been confused 

 in many nurseries, and only the trained eye can tell 

 them apart in the iiursiry row. The double or Snow- 

 ball type is, of cour.sc, the one destined to the greater 

 popularity, though the siii^'le form is a shrub of great 

 value, especially for large cstatis and parks. The dou- 

 ble form is known to nurscriis as \'ihii nniiii pliciiliim, 

 but its proper name is I', lom. iilnxmii. var. pUealinti. 

 While it is hardy in New Ensland. it is net a shrub that 

 can be transplanted as easily as many other species. 

 Hence it should be transplanted every second year in 

 the nursery until it is sold. The double form may be 

 propagated by cuttings of half-ripened wood in close 

 frames, or by layers, which in some soils would better 

 remain two years. French nurserymen propagate it by 

 layering. The layers seem to suffer from winter and, 

 to be on the safe side, it is best to cover them well with 

 moss or leaves when the ground is somewhat frozen, so 

 that the frost may be kept in until spring. The clusters 

 are about as big as oranges and pure white. They are 

 in great demand for Decoration Day in New York. 



The single form, unlike the double, is easily trans- 

 planted. It is also readily propagated by layers or cut- 

 tings. Both kinds are hardy in the North and make 

 compact bushes 6-8 ft. high. 



J. W. Adams and W. M. 



11. 



.. Li's. penninerved, not lobed. 

 B. Cymes paniculate, broadly 

 pyramidal or semi-globose. 



c. Foliage deciduous 1. Sieboldi 



CC. Foliage evergreen. 



D. Corolla with cylindrical 



tube 2. Sandankwa 



DD. Corolla rot ate -campanu- 

 late 'i. odoratissimum 



BB. Cymes umbel-like, flat {ex- 

 cept in the Snoirball forms. 

 See Nos. 12, 16, 28.) 

 c. Secondary veins curving and 

 anastomosing before reach- 

 ing the margin: margin 



inches and li'S. hi 



sute. 



rigidum 



0. Foliage deciduous. 

 E. Branches and Ivs. gla- 

 brous or ferrugin- 

 eously scurfy. 

 F. Lvs. entire or slightly 

 undulate-dentate. 

 G. Cymes sessile: Ivs. 



small 6. obovatum 



GO. Cymes peduncled .. . 7. nudum 



8. cassinoides 

 Y¥. Lvs. finely and 

 sharply serrate : 

 cymes sessile, sub- 

 tended by the upper 

 leaves. 

 Q. Petioles mostly with 

 wavy, rather broad 



margin 9. Lentago 



GO. Petioles without or 

 with 



petioles rusty- 

 pubescent 10. mfidulum 



HH. Winter-buds and 

 petioles not 

 rusty-pubescent.ll. pnmifolium 

 Branches and Irs. stel- 



teeth. 

 J. Winter-buds naked: Ivs. 

 with usually numerous 

 small teeth. 



