Species relationships and taxonomy in Tulipa subg. Tulipa (Liliaceae)
van Raamsdonk, L.W.D.; de Vries, T.
Plant Systematics and Evolution 195(1/2): 13-44
Principal component and canonical variate analyses were used to analyse the variation in 34 morphological characters measured in 98 accessions of Tulipa subgenus Tulipa, formerly known as section Leiostemones. In addition, 43 accessions were analysed cytogenetically by means of C-banding methods. Low levels of heterochromatin (<2%) was found in sections Kolpakowskianae and Eichleres, while high levels (>20%) were present in some species of sections Tulipanum and Tulipa. Based on the encountered variation and on geographical distribution data, 30 species in 5 sections were recognized, of which the synonymy is stated. Seven new series in 2 different sections are designated.