Taxonomical Revision about the Deciduous Oaks of Sicily. Brullo, S.; Guarino, R.; and Siracusa, G. 54(1):1–72.
Taxonomical Revision about the Deciduous Oaks of Sicily [link]Paper  doi  abstract   bibtex   
On the basis of literature, herbarium and field investigations, a survey of deciduous oaks occurring in Sicily is presented. A morphological description with drawings and some chorological and ecological observations is reported for each species. It is emphasized that the phenotypical variability observed within the Q. humilis group in Sicily, even if the S. Thyrrhenian area is considered as probable center of speciation for the group, related to deforestation, which had previously favoured the genetic mixing among the population. This study shows there are 9 species in Sicily, all well distinguished by morphological, ecological and phenological features. They are: Q. cerris, a well-known species, widespread in Sicily, in mountain sites of the north-eastern part of the island; Q. gussonei, an endemic closely related to the previous species, occurring in the sub-mountain belt of N-Sicily, where it is localized on siliceous substrata; Q. fontanesii, probably a hybrid between Q. gussonei and Q. suber and distributed within the area pertaining to the former parent; Q. petraea, in Sicily represented exclusively by the new subsp. austrotyrrhenica, very rare Sicilian-Ca- labrian endemic localized in fresh and foggy valleys within the beech belt; Q. congesta, Q. virgiliana, Q. dalechampii, Q. amplifolia and Q. leptobalanos, all belonging to the Q. humilis group. Q. congesta is an acidophilous and orophilous species endemic to Sicily, Calabria and Sardinia, mainly characterized by having small and regular ribs on the bark, an extremely short fruiting axis bearing several fruits, a small cyathiform cup covering not more than ¼ of the acorn, and very small and finely imbricate scales; Q. virgiliana is mainly distributed in the basal and submountain belt, and has a bark quite similar to the previous species, but with very big acorns covered up to ½ by an hemispheric-barrel-shaped cup with a very irregular border and uniformely silky scales. Q. dalechampii is an orophilous species characterized by very prominent thick ribs on the bark, acorns covered up to ⅔ by an hemispheric-ogival-cup with a regular border and long scales silky at the base, carinate and dark at the tip. Q. amplifolia is the most thermophilous among the Sicilian deciduous oaks and has a bark very similar to the previous species but very big acorns covered up to ¼ by a cyathio-barrel-shaped cup with humped subglabrous or sparsely hairy scales, make this species unmistakable. Q. leptobalanos is a very localized Sicilian endemic growing exclusively on siliceous soils in the mountain-belt of NW-Sicily; it is mainly characterized by a greysh bark with small and regular ribs and by the production of a great number of small fruits generally borne on long axes. Finally, it must be stressed that Q. sicula, quoted from Sicily by several authors, must be considered a phantom species, since it is described from a specimen taken from a plant cultivated in the Botanical Garden of Palermo, probably to be ascribed to Q. canariensis, while Q. minaae is likely to be an hybrid of uncertain taxonomical value. Some other species, even if previously reported for the Sicilian flora, must now be excluded from it, since their mention is mosdy due to mistakes in specimen identification, as in the case of Q. crenata, Q. humilis, Q. robur, Q. frai- netto and Q. brachypbylla.
@article{brulloTaxonomicalRevisionDeciduous1999,
  title = {Taxonomical Revision about the Deciduous Oaks of {{Sicily}}},
  author = {Brullo, Salvatore and Guarino, Riccardo and Siracusa, Giuseppe},
  date = {1999-01},
  journaltitle = {Webbia},
  volume = {54},
  pages = {1--72},
  doi = {10.1080/00837792.1999.10670670},
  url = {https://doi.org/10.1080/00837792.1999.10670670},
  abstract = {On the basis of literature, herbarium and field investigations, a survey of deciduous oaks occurring in Sicily is presented. A morphological description with drawings and some chorological and ecological observations is reported for each species. It is emphasized that the phenotypical variability observed within the Q. humilis group in Sicily, even if the S. Thyrrhenian area is considered as probable center of speciation for the group, related to deforestation, which had previously favoured the genetic mixing among the population. This study shows there are 9 species in Sicily, all well distinguished by morphological, ecological and phenological features. They are: Q. cerris, a well-known species, widespread in Sicily, in mountain sites of the north-eastern part of the island; Q. gussonei, an endemic closely related to the previous species, occurring in the sub-mountain belt of N-Sicily, where it is localized on siliceous substrata; Q. fontanesii, probably a hybrid between Q. gussonei and Q. suber and distributed within the area pertaining to the former parent; Q. petraea, in Sicily represented exclusively by the new subsp. austrotyrrhenica, very rare Sicilian-Ca- labrian endemic localized in fresh and foggy valleys within the beech belt; Q. congesta, Q. virgiliana, Q. dalechampii, Q. amplifolia and Q. leptobalanos, all belonging to the Q. humilis group. Q. congesta is an acidophilous and orophilous species endemic to Sicily, Calabria and Sardinia, mainly characterized by having small and regular ribs on the bark, an extremely short fruiting axis bearing several fruits, a small cyathiform cup covering not more than ¼ of the acorn, and very small and finely imbricate scales; Q. virgiliana is mainly distributed in the basal and submountain belt, and has a bark quite similar to the previous species, but with very big acorns covered up to ½ by an hemispheric-barrel-shaped cup with a very irregular border and uniformely silky scales. Q. dalechampii is an orophilous species characterized by very prominent thick ribs on the bark, acorns covered up to ⅔ by an hemispheric-ogival-cup with a regular border and long scales silky at the base, carinate and dark at the tip. Q. amplifolia is the most thermophilous among the Sicilian deciduous oaks and has a bark very similar to the previous species but very big acorns covered up to ¼ by a cyathio-barrel-shaped cup with humped subglabrous or sparsely hairy scales, make this species unmistakable. Q. leptobalanos is a very localized Sicilian endemic growing exclusively on siliceous soils in the mountain-belt of NW-Sicily; it is mainly characterized by a greysh bark with small and regular ribs and by the production of a great number of small fruits generally borne on long axes. Finally, it must be stressed that Q. sicula, quoted from Sicily by several authors, must be considered a phantom species, since it is described from a specimen taken from a plant cultivated in the Botanical Garden of Palermo, probably to be ascribed to Q. canariensis, while Q. minaae is likely to be an hybrid of uncertain taxonomical value. Some other species, even if previously reported for the Sicilian flora, must now be excluded from it, since their mention is mosdy due to mistakes in specimen identification, as in the case of Q. crenata, Q. humilis, Q. robur, Q. frai- netto and Q. brachypbylla.},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13799764,forest-resources,italy,quercus-spp,species-description,taxonomy},
  number = {1}
}
Downloads: 0