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| Acetabularia monodisca in Deshaprema et Dissanayake, 2025. |
Abstract
A morphometric analysis of Acetabularia crenulata var. monodisca specimens collected from the Jaffna Sea, Sri Lanka, was conducted. Principal Component Analysis (PCA) and descriptive statistics revealed significant morphological divergence between var. monodisca and A. crenulata populations from the Caribbean Sea (the type locality of A. crenulata). These findings support the reclassification of var. monodisca to the species level as A. monodisca. Specifically, A. monodisca is characterized by a single, less caliciform (cup-shaped) disc (whorl) comprised of 53–86 laterally fused gametangial rays, whereas A. crenulata possess a deeply caliciform disc formed by 41–67 gametangial rays.
Biodiversity, Dry zone of Sri Lanka, New combination, Taxonomy, Algae
Supun DESHAPREMA and Sachini DISSANAYAKE. 2025. Acetabularia monodisca, comb. et stat. nov. (Polyphysaceae): A Taxonomic Reclassification of An Umbrella Alga from Jaffna, Sri Lanka, with A Key to Acetabularia Species in the Indian Subcontinent. Phytotaxa. 693(3); 245-254. DOI: doi.org/10.11646/phytotaxa.693.3.5 [2025-03-14]
