Article from Bean's Trees and Shrubs Hardy in the British Isles
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'Prunus cerasus' from the website Trees and Shrubs Online (treesandshrubsonline.
A deciduous bush or small rounded tree, suckering at the root and often making thickets in its wild state, but 10 to 20 ft high under cultivation. Leaves oval or ovate, abruptly short-pointed, 11⁄2 to 3 in. long, half to two-thirds as wide, glabrous on both surfaces, rather lustrous above, the margins set with double gland-tipped teeth; stalk 1⁄2 to 3⁄4 in. long, usually glanded. Flowers pure white, 3⁄4 to 1 in. across, produced in clusters, each flower on a stalk 3⁄4 in. long. Fruits red to blackish, roundish and depressed, with soft, juicy, acid flesh.
P. cerasus is a cultivated species to which belong many orchard varieties (see further below). It is naturalised over much of Europe (including Britain), and the Near East, but is not known anywhere as a truly wild plant. It is certainly related to P. avium, but distinct enough to rank as a separate species. In its naturalised state it produces suckers from the roots and never makes a tall tree as P. avium does. The leaves of P. cerasus are nearly or entirely without down; and the fruit is not sweet nor bitter, but acid. A further distinction is that the calyx-tube is campanulate, whereas in P. avium it is urn-shaped, i.e., constricted at the mouth.
The orchard varieties of P. cerasus have been grouped as follows:
When budded or grafted on low standards, this makes a dwarf, round-headed tree, profuse in flower, and of very slow growth. A charming tree for a small lawn, where it may stand for many years and cause no inconvenience by overgowing. It is figured in Garden, Vol. 78, p. 201.It is possible that this variety is really the same as ‘Globosa’ (‘Umbraculifera’), which was put into commerce by Späth in the 1880s.
Synonyms
Cerasus gondouinii Poiteau & Turpin
P. × effusa (Host) Schneid
P. × gondouinii appears to be the correct name for hybrids between P. cerasus and P. avium. Here belong the Duke cherries. An ornamental cherry known as ‘Schnee’, cultivated in Germany and Holland, is considered by Dr Boom to be a hybrid of this parentage (Dendroflora, No. 3 (1966), p. 14; figured in op. cit., No. 1, p. 18).
Flowers pure white, 1{1/2} in. across, very double, with stalks almost twice as long as in the type, but not so pendulous as in P. avium ‘Plena’. It is scarcely so fine as that variety, and is subject to brown rot.
Synonyms
P. acida Ehrh.
P. caproniana (L.) Gaudin
Synonyms
P. acida sens . K. Koch, not Ehrh.
Cerasus collina Lejeune & Cortois
Prunus cerasus var. humilis Bean (?)
Synonyms
Cerasus marasca Host