Complimentary 
NEW SERIES VOL. IV 
NO. 5 
ARNOLD ARBORETUM 
HARVARD UNIVERSITY 
BULLETIN 
OF 
POPULAR INFORMATION 
JAMAICA PLAIN, MASS. MAY 21, 1918 
Lilacs. Some of the best of the newer varieties of the common 
Lilac {Syringa vulgaris) have been in bloom during the past week and 
the following are worth the attention of persons who make Lilac 
collections: Deuil d'Emile Galle, with pale pink double flowers; Wal- 
deck Rousseau, with pink single flowers; L’Oncle Tom, with dark red- 
purple single flowers; Grand Due Constantin, with light lilac-colored 
flowers; Toussaint Louverture, with unusually long narrow clusters of 
red-purple flowers. This is a tall growing plant with erect stems and 
of not particularly good habit, but the long narrow clusters of flowers 
are attractive. De Mirabel, with single very dark lilac-colored flowers 
in long narrow clusters; Edmund Bossier, with dark rose-purple single 
flowers in large broad clusters; Maurice de Vilmorin, with pale, lilac- 
colored double flowers; President Loubet, with deep lilac single flowers; 
Languis, with pale pink single flowers opening from dark rose-colored 
buds; and Reamur, with large, single, rose-colored flowers in broad 
clusters. An unusually large number of the varieties of the common 
Lilac have flov/ered well this year and among the older varieties the 
following have been unusually good: Congo, with large, dark red-purple, 
single flowers; Macrostachya, with pale pink, single flowers in long 
narrow clusters. Like Toussaint Louverture, this variety has erect 
stems which do not make a handsome bush, and the flowers, too, begin 
to open before the leaves appear. The flowers, however, are so deli- 
cate in color that some persons consider this one of the handsomest 
garden Lilacs. Other varieties which have been unusually good are 
Marliensis pallida, with broad clusters of pale pink flowers; Furst 
Lichtenstein, with single pink flowers; Condorcet, with double pale blue 
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