Abstract
The morphology, altitudinal distribution and phytocoenology ofHypericum empetrifolium Willd., var.oliganthum Rech. fil. and var.tortuosum Rech. fil. are reassessed and as a result, the taxa are treated at subspecific rank. Essential characters proved to be growth form, number of flowers, foliage and epidermal surface characters, shape of seeds and testa sculpturing.
The different growth forms can be interpreted as adaptations to the local habitats.Hypericum empetrifolium Willd. subsp.empetrifolium is a low subshrub of various vegetation types known as phrygana whereasHypericum empetrifolium Willd. subsp.oliganthum (Rech. f.)Hagemann grows as a cushion-like dwarf shrub in chasmophyte associations rich in relic species.Hypericum empetrifolium Willd. subsp.tortuosum (Rech. f.)Hagemann is confined in the high mountain regions and grows as a true dwarf espalier shrub with low spreading shoots.
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Dedicated to Hofrat Univ.-Prof. DrK. H. Rechinger on the occasion of his 80th birthday.
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Hagemann, I. On subspecific taxa ofHypericum empetrifolium (Hypericaceae) from Crete. Pl Syst Evol 155, 165–187 (1987). https://doi.org/10.1007/BF00936297
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DOI: https://doi.org/10.1007/BF00936297