Hawthorn (Crataegus oxyacantha)

Linnaeus introduced the name Crataegus oxyacantha for a species of Northern European Hawthorn[1] and the name gradually became used for several similar species which were assumed to be the same, parti.. Дивитись далі »cularly the Midland Hawthorn C. laevigata and the Common Hawthorn C. monogyna. In 1946 Dandy showed that Linnaeus had actually observed and described a single-styled species similar to the Common Hawthorn[2], and the Midland Hawthorn was effectively a later discovery. However, Byatt showed that confusion over the true identity of C. oxyacantha remained [3], and to avoid confusion, the name was formally rejected as ambiguous by the International Botanical Congress[2]. More recently, Christensen concluded [4] that the species studied by Linnaeus matches C. rhipidophylla Gand., a relatively rare species.
Print: Ajans-Turk Matbaasi, Ankara

Країна:	Туреччина
Тип:	Поштові марки
Серія:	Definitive Postage Stamps, 2001, Medicinal Plants
Номінал:	1,750,000 ₺
Рік:	2001
Розмір:	26 x 36 mm
Перфорація:	comb 13¾ x 14
Тираж:	600,000