VIBURNUM 



cymes: calyx with 5 minute teeth ; corolla rotate or 

 campanulate, rarely tubular; staraeus 5: ovary usually 

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

 pressed stone. In several species the marginal fls. of 

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

 cephalum, tomentosum, Opulus, Sargenti and alnifo- 

 Hum, and of the three first named garden forms are 

 known with all fls. sterile and enlarged. 



Alfred Rehder. 



VIBURNUM 



1923 



2661. Viburnum 



The familiar Snowball of delightful memory seems to 

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

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

 nese species that is even more satisfactory. Fig. 2663. 

 The berries of the Japanese species, V. tomeHtosum, are 

 a brilliant scarlet, chaugiug 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. 

 2ti64 and 26G6. Unfortunately they have been confused 

 in many nurseries, and only the trained eye can tell 

 tbem apart in the nursery row. The double or Snow- 

 ball type is, of course, the one destined tu the greater 

 popularity, though the singb- fi.rni i, n -Imili of threat 

 value, especially for large i-slit : ' ; I 'I'lic ilcm- 

 ble form is known to nurs^■ril- i j^h^'^iluin. 



but its proper name is V.ln, . , ,„. > ,u . /.inn/iiin . 



While it is hardy in New Ent;l;ui.l, iL i.-. ii..i, n. .shrui) 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 

 f raijies, 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. Adasis and W. M. 



INDEX. 



acerifolium, 26. lantanoides, 13, 14. pubescens, 24. 



alnifoliuiu, 13. latifolium, 1, 5. purpureuui, 4. 



Americanum, 28. laiiriloUum, 4. pyrifolium, '.], 11. 



Ajiglicujn, 7. Laurustinus , 4. reticulatuui, 1. 



angustifolium, 7. Lentago, 9. rigidum. 5. 



Aioabucki, 3. lueidum, 4. rosaceuvi, 28. 



Awafuki, 3. naacroeephalum, 12. roseum, 28. 



CHssinoides, 8. macrophyllum, 17. rotundifoUum, 16. 



Claytoni. 7. moUe, 22. rufldulum. 10. 



cotinifolium, 15. multratum, 15. rufo-tomentosum ,10. 



cuspidatum, 16. nanum, 28. rugosum, 5, 14. 



Denietrii.nis. 23. Nepalense, 22. Sandankwa, 2. 



dentatnm. 21. nitidum, 7. Sargeutii, 29. 



liihitatiun, l.s. nudum, 7. scabreltum. 22. 



ediile. 2S. obovatum. 6. Sieboldi, 1. 17. 



'insum, 25. odoratissimum, 3. sqitamatum, 8. 



f' rniijineum, 10. opuloides. 28, sterile. 28. 



F<.rl,inei, 12. Opulus, 28. strictum, 4. 5. 



Fiubeli. 4. Oxycoccus, 28. suspensum, 2. 



iiiniidiftorum.i. parmfoliiim. 16. Tinus. 4. 



Hanceanum, 22 and paucifiornm, 27. tomentosum, 16. 



suppl. list. phlebotriehnm, 20. Irilitbttm, 28. 



hirtum. 4. pirifolium, 9, 11. variegatiim. 4. 



Japonicum. 1,16. 17. plejw.m, la. Tftteri.i). 



Keteleeri, 12. plicatnm, 16. virgatum, 4. 



Irengatum. 6, 21. pranifolium. 9, 10, Wrightii, 19. 

 Lantana. 14. 11. 



A. I/i'S. penninerved, not lobed. 

 B. Cymes paniculate, broaijly 

 pyramidal or semi-globoae. 



c. Foliage deciduous 1. Sieboldi 



CC. Foliage evergreen. 



D. Corolla with cylindrical 



tnhi' 2. Sandankwa 



DD. Coroll.i rot., I. -,;,M,„n,ii- 



lali 3. odoratissimum 



BB. Cymes umticl-likc, ihit (cj-- 

 'cept in the Siitiivlmll forms. 

 See JYos. 12, 16, 2S.) 

 c. Secondary veins curving and 

 anastomosing before reach- 

 ing the margin: margin 

 entire or finely serrate. 

 D. Foliage persistent, entire. 

 E. Branches and Ivs. gla- 

 brous or slightly pu- 

 bescent 4. Tinus 



EE. Branches and Irs. hir- 

 sute 5. rigidum 



DD. Foliaiie deciduous. 



E. Briiiii-he.s and Irs. gla- 

 hr'.u.'i nr f.rrugin- 



F. Lrs. rulirr „r .slii/htly 

 HHdulaUdrutale. 



sessile: Ivs. 



G. Cym> 



small 



Ga. Cymes peduncled 



>s. finely and 

 sharply serrate : 

 cymes sessile, sub- 

 tended by the upper 



obovatum 



nudum 



cassinoides 



GG. Petioles without or 



with narrow, not 



wavy margin, 



H. Winter-buds and 



rusly- 



puL'sc; 

 HH. Winter hl( 



11.5/1/-, 



10. rufidulum 



11. prunifolium 



EE. Branches and Ivs. stel- 

 late pubescent: winter- 

 buds naked 12. macrocephalum 



CC. Secondary veins prominent, 



ending in the points of the 



teeth . 



D. Winter-buds naked: Ivs. 



u'ith usually mimerous 



small teeth. 



