Journal
PHYTOTAXA
Volume 584, Issue 2, Pages 59-88Publisher
MAGNOLIA PRESS
DOI: 10.11646/phytotaxa.584.2.1
Keywords
Lobelioideae; Mediterranean area; morphology; phenogram; pollen; seed testa; Solenopsis; subspecies
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Based on herbarium and field investigations, this study examines the taxonomic status of Solenopsis laurentia, a hygrophilous species of the Campanulaceae family, showing a Mediterranean distribution. Five subspecies were recognized based on morphological and nomenclatural studies conducted on living populations from various Italian localities. Detailed descriptions, illustrations, micromorphology analysis, taxonomical relationships, distribution, conservation status, and nomenclatural notes were provided for each subspecies.
Based on herbarium and field investigations, the taxonomic status of Solenopsis laurentia (Campanulaceae), hygrophilous species belonging to the subfam. Lobelioideae showing a Mediterranean distribution is here examined. According to literature, it can be considered as a species complex, within which several taxa at specific and infraspecific rank were described. Morphological and nomenclatural studies carried out on several living populations coming from many Italian localities allowed to recognize five subspecies. For each of them, a detailed description, iconography, micromorphology of the seed testa and pollen grains, taxonomical relationships, chorology, conservation status and nomenclatural notes are provided. The recognized subspecies of Solenopsis laurentia are the following: a) subsp. laurentia, which is the most widespread in Italy and also in the Mediterranean area; b) subsp. gasparrinii (Tineo) comb. nov., which is quite common in Sicily with scattered occurrence in other Mediterranean localities; c) subsp. caespitosa Brullo, it seems currently localized in Apulia and Sardinia; d) subsp. parvula Brullo, occurring in some localities of the Italian peninsula, Sardinia and Tunisia; e) subsp. hyblaea, described as new for science from Sicily with a punctiform distribution.
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