18 
plant in Bulgaria are in the Arboretum collection which contains now 
one hundred and eighty-six named varieties. Hardly a week passes 
without a letter addressed to the Arboretum asks for the names of the 
best six or twenty-five Lilacs. All the varieties are handsome plants, 
and persons rarely agree about their individual value. Some persons 
prefer fiowers of one color and other persons prefer flowers of "another 
color; some persons like the Lilacs with double flowers and others dis- 
like them. All the forms of the garden Lilac have practically the same 
habit and foliage, and the same inconspicuous fruit; they all bloom 
freely every year, and breeding and selection have not influenced their 
perfume. There is considerable variation in the size of the individual 
flowers; the double flowers open generally a little later than the single 
flowers and last longer. There is little difference in the time of flow- 
ering of all these varieties. The size of the flower-cluster varies some- 
what on the different forms; it is larger on young plants than on old 
ones, and it can always be enlarged by severe pruning which increases 
the vigor of the flower-bearing branches. Many persons who visit the 
Arboretum find that Bussey’s old Lilacs are more beautiful than the 
more recent Lemoine creations because they are the ones which have 
long been common in gardens and beloved by generations of New Eng- 
landers. A choice of these Lilacs is largely a matter of taste and 
color, and the Arboretum, in the hope of helping some of its corres- 
pondents, offers the following fifty as a good selection of these plants. 
They are all growing in the Arboretum collection where they bloom 
usually every year and most of them can now be found in American 
nurseries; 
Single Varieties: White, Madame Florent Stepman, Madame 
Moser, Princess Alexandra, Vestale; Pale, speciosa, spectahilis, Clara 
Cochet, Lucie Ballet, mncrostachya; Medium, Amethyst, Charles X., 
Furst Lichtenstein, Gloire de Moulins, Marly ensis pallida. Pyramidal, 
Ronsard, Saturnale, Triomphe d' Orleans, Ville de Troyes', Dark, Con- 
go, Diderot, Laplace, Marceau, Montgolfier, Negro, Philemon, Profes- 
sor Sargent, Reaumur, Turenne, Volcan, Edmond Boissier. 
Double Varieties: White, Edith Cavell, Madame Abel Chatenay, 
Madame Casimir Pe'rier, Princess Clementine’, Pale, Leon Gambetta; 
Medium, Dr. Masters, Due de Massa, Jules Ferry, Julien Gerardin, 
Marechal de Bassompierre, Mar^chal Lannes, Maurice de Vilmorin, 
Olivier de Serres, Rene Jarry-Desloges, Desfontaines, Gaudichaud, 
President Failures, President Loubet, Thunbergi; Dark, Paul Thirion, 
Violetta, Georges Bellair. 
In the next issue of this Bulletin a few notes will appear on some 
of the other species and hybrids of Syringa. 
• Azalea (Rhododendron) lutea. This Azalea produced its fragrant yel- 
low flowers here for the first time in 1909 from seed collected by Dr. 
Schneider on the Caucasus and is only again covered with flowers this 
year which have been open for several days. It is remarkable that 
they are uninjured, although those of Azalea poukhanense have suf- 
fered for the first time, as have the flowers of Rhododendron mucron- 
ulatum which have been nearly all killed although this northern China 
deciduous-leaved plant has been growing in the Arboretum since 1885; 
it was raised from seed collected near Peking and has never before 
