期刊
NORDIC JOURNAL OF BOTANY
卷 24, 期 2, 页码 143-147出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1756-1051.2004.tb00828.x
关键词
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In connection with systematic study of European taxa of Crataegus (Rosaceae subfam. Maloideae) lectotypes are designated for Crataegus monogyna f. subdigyna and C. monogyna var. ronnigeri. C. microphylla subsp. malyana is described as a taxon new to science and a key to the recognised taxa of C. microphylla and of the closely related C. rhipidophylla is given.
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