6533b829fe1ef96bd12899f9
RESEARCH PRODUCT
Hypericum scruglii sp. nov. (Guttiferae) from Sardinia
Gianluigi BacchettaSalvatore BrulloCristina Salmerisubject
Endemic flora Guttiferae Hypericum karyology new species Sardinia taxonomyEcological relationshipSettore BIO/02 - Botanica SistematicaBotanyHypericum scrugliiPlant ScienceBiologyHypericumbiology.organism_classificationEcology Evolution Behavior and SystematicsWest mediterraneandescription
A new species of Hypericum (Guttiferae) from Sardinia, H. scruglii, is described and illustrated. It occurs on damp soil, near springs or streams with freshwater, where it grows with numerous hygrophytes. This diploid species (2n � 16) belongs to the sect. Adenosepalum and is closely related to H. tomentosum, a species widespread in the west Mediterranean region. During field investigations in Sardinia, very peculiar populations of Hypericum L. were found occuring on damp soils and limited to calcareous substrates. These plants showed a close morphological and ecological relationship with H. tomentosum L., a species belonging to sect. Adenosepalum Spach. As emphasized by Robson (1996), the Sardinian populations of H. tomentosum tend towards H. pubescens Boiss. A detailed analysis of living material collected from many localities on the island allowed us to verify that these plants were remarkably different from typical specimens of H. tomentosum and, in addition, were totally unlike H. pubescens. The Sardinian populations differ from both related species with respect to the shape and size of leaves, floral structures and capsules. Based on this, we concluded that they constitute a new species.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-05-06 | Nordic Journal of Botany |