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| Genlisea hawkingii S.R.Silva, B.J.Płachno & V.Miranda
in Silva, Płachno, Carvalho & Miranda, 2020.
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Abstract
Genlisea hawkingii, which is a new species of Genlisea subgen. Tayloria (Lentibulariaceae) from cerrado in southwest Brazil, is described and illustrated. This species has been found in only one locality thus far, in the Serra da Canastra, which is located in the Delfinópolis municipality in Minas Gerais, Brazil. The new species is morphologically similar to Genlisea violacea and G. flexuosa, but differs from them in having a corolla with a conical and curved spur along with sepals with an acute apex and reproductive organs that only have glandular hairs. Moreover, it is similar to G. uncinata’s curved spur. G. hawkingii is nested within the subgen. Tayloria clade as a sister group to all the other species of this subgenus. Therefore, both morphological and phylogenetic results strongly support G. hawkingii as a new species in the subgen. Tayloria.
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| Fig 1. Genlisea hawkingii S.R.Silva, B.J.Płachno & V.Miranda. A. Habit. B. Rhizophyll. C. Glabrous leaf. D. Glandular capitate hairs. E. Open corolla, lateral view. F. Corolla, front view. G. Calyx. H. Capsule. |
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| Fig 2. Genlisea hawkingii S.R.Silva, B.J.Płachno & V.Miranda. A. Habitat. B. Habit of the plant in Delfinópolis, Minas Gerais (Brazil). C. Corolla, front view. D. Corolla, lateral view. E. Dry infructescence. The pedicel twist upward. F. Immature fruit. G. Mature fruit. Pedicels bent upward. H. A rosette with two scapes. I. A rosette with photosynthetic leaves (above) and rhizophylls (below). |
Genlisea hawkingii S.R.Silva, B.J.Płachno & V.Miranda, sp. nov.
Diagnosis: Similar to Genlisea violacea A.St.-Hil. and G. flexuosa Rivadavia, A.Fleischm. & Gonella, but it is distinct for the dark green leaves having a glabrous lamina and the flower that has a long conical spur with a curved apex, acute sepals apex and reproductive organs that are exclusively covered with glandular hairs.
Etymology: The species epithet ‘hawkingii’ was attributed as homage to the great English theoretical physicist and cosmologist, Stephen William Hawking, who died on March 14, 2018. We were impressed with his life’s trajectory and his outstanding discoveries in cosmology. He became a signpost not only for other scientists but for all people.
Saura Rodrigues Silva, Bartosz Jan Płachno, Samanta Gabriela Medeiros Carvalho and Vitor Fernandes Oliveira Miranda. 2020. Genlisea hawkingii (Lentibulariaceae), A New Species from Serra da Canastra, Minas Gerais, Brazil. PLoS ONE. 15(1): e0226337. DOI: 10.1371/journal.pone.0226337
