Syringa vulgaris in commerce today. Lemoine's "French lilacs" extended the limited color range to include deeper, more saturated hues, and they also introduced double-flowered "sports", with the stamens replaced by extra petals. These cultivars have gained the Royal Horticultural Society's Award of Garden Merit: Syringa vulgaris Syringa vulgaris (lilac or common lilac) is a species of flowering plant in the olive family Oleaceae, native to the Balkan Peninsula, where it grows on rocky hills. This species is widely cultivated as an ornamental and has been naturalized in other parts of Europe (including the United Kingdom, France, Germany, and Italy), as well as
Rheum (plant) represented by about 60 extant species. Among species found in the wild, those most commonly used in cooking are the garden rhubarb ("R. rhabarbarum") and the so-called false rhubarb ("R. rhaponticum"), which is actually a true rhubarb. The many varieties of cultivated rhubarb more usually grown for eating are recognised as "Rheum" × "hybridum" in the Royal Horticultural Society's list of recognised plant names. The drug rheum is prepared from the rhizomes and roots of another species, "R. officinale" or medicinal rhubarb. This species is also native to Asia, as is the turkey rhubarb ("R. palmatum"). Another species, the Sikkim