Language: Bilingual in English and Slovene
Helleborus (Helleborus L.) in Slovenia deals with the taxonomic classification of Helleborus, commonly known as hellebores, and its diversity and distribution in Slovenia. This genus comprises approximately 20 species of herbaceous or evergreen perennial flowering plants in the family Ranunculaceae. A separate chapter presents results on an analysis of the significance of basal leaves in determining hellebore species.
7 Introduction
9 Taxonomic Classification of the Genus
23 Hellebore Diversity in Slovenia
25 Hellebore Diversity in Slovenia
27 A Brief History of Hellebore
29 Historical Survey of Hellebores in the Territory of Present-Day Slovenia
39 Description of the Species Growing in Slovenia
39 Helleborus niger L.
41 Helleborus odorus Waldst. & Kit.
41 H. dumetorum Waldst & Kit.
41 Helleborus atrorubens Waldst. & Kit.
43 H. multifidus Vis. subsp. istriacus (Schiffner) Merxm. & Podl.
47 Cytology
47 Ethnology
47 Toxicity of Hellebore
49 Why Hellebores Can Bloom so Early
49 Hellebores, Their Adaptations and Habitats
57 Blooming
59 Seedlings in Nature
59 Cultivation
65 Pests
65 Diversity of Single Species in Slovenia
65 Historical Survey of Diversity Observed in Christmas Rose
69 Helleborus niger, Its Diversity in Recent Times
81 Fragrant Hellebore Helleborus odorus - Diversity
87 Ecology of Fragrant Hellebore (H. odorus)
89 Diversity of H. dumetorum
93 Ecology of H. dumetorum
95 Diversity of Helleborus atrorubens
99 Ecology of H. atrorubens
99 Diversity of H. multifidus subsp. istriacus
105 Ecology of H. multifidus subsp. istriacus
105 Hellebores and Their Habitats in Slovenia
109 Hybrids
114 Literature
119 Significance of basal leaves in determining hellebore species
121 Introduction
121 Material And Methods
127 Results
127 Results of Preliminary Determinations
127 Results of Exploratory Data Analysis (EDA)
129 Results of Hierarchical Clustering
129 Results of Principal Component Analysis
131 Results of Discriminant Analysis
133 Distribution of Trait Values in Determined Species
135 Evaluation of Traits
139 Descriptions of Established Taxa
141 Determination Key
143 Conclusions
143 Literature
145 Helleborus niger - diversity in Slovenia
147 Morphology
149 Growth
151 Flowering and Pollination
151 Pollinators of Helleborus niger in Slovenian Naturally Occurring Populations
157 Analysis of Phenotypic Diversity of H. niger in Natural Populations
159 Description of Qualitative and Quantitative Traits
165 Phenotypic Variation among and within Populations
169 Relationships among Traits Analysed
171 Hierarchical Cluster Analysis
171 Discussion
173 Perspectives
175 Morphological Descriptors of Christmas rose
182 Appendix 1: Distribution of Quantitative Continuous and Discrete Traits
184 Appendix 2: Phenotypic Variation among and within Populations
185 Appendix 3: Correlation Coefficients within the Populations
188 Appendix 4: Discriminant Analysis
194 Literature
197 Distribution of hellebore species in Slovenia
201 Index