Pollen and floral morphology of Androsace brevis (Hegetschw.) Ces. (Primulaceae), a vulnerable narrow endemic plant of the Southern European Alps

Eustacchio, E.; Bonelli, M.; Beretta, Mario; Monti, Irene; Gobbi, Mauro; Casartelli, Morena; Caccianiga, Marco

doi:10.1016/j.flora.2023.152256

Cited by 2 publications

(1 citation statement)

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“…The measurements of acetolyzed pollen, mounted in glycerine jelly, were taken in LM with a 100x immersion objective lens on a Leica DM-RD microscope equipped with a Leica MC170 HD camera (Leica Camera AG, wetzlar, DE). For pollen grain shape, P (polar axis), E (equatorial diameter), and P/E ratio, 50 pollen grains in equatorial view were measured and analyzed for each population (Eustacchio et al, 2023). The measurements were performed with ImageJ software (Schneider et al, 2012).…”

Section: Methodsmentioning

confidence: 99%

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2024

Phytotaxa

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A new species of Campanula (Campanulaceae), C. bergomensis sp. nov., is described from the Bergamo Prealps (Orobic Prealps, Lombardy, Northern Italy), based on both morphological and molecular evidence. The new species was considered in the past as an isolated population of C. cespitosa, which presents an eastern Alpine distribution. C. bergomensis is morphologically well distinguishable from C. cespitosa on the number of flowers in the racemose inflorescence, the corolla shape, and the whitish-yellow pollen surface with many spinulae. Genetically, the presence of an insertion of 81-bp in the trnL-F sequences is very characteristic. Further studies are needed to better define the phylogenetic relationship among the three closely related species, C. bergomensis, C. cespitosa and C. cochleariifolia. C. bergomensis inhabits dolomitic debris cones at low elevations. The species is range-restricted and is severely threatened by human activities. Therefore, it is urgent to adopt protection and conservation measures for the new species.

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Section: Methodsmentioning

confidence: 99%