 |
| Drosera maanyaa-gooljoo A.Fleischm. & T.Krueger, in Krueger, Cross, Rangers et Fleischmann, 2023. |
Abstract
Drosera maanyaa-gooljoo, a new annual species of Drosera section Arachnopus from the remote Buccaneer Archipelago and Yampi Peninsula in the northwest Kimberley region of Western Australia, is described and illustrated. Drosera maanyaa-gooljoo is a distinctive species that differs in morphology and indumentum from all previously known taxa of D. section Arachnopus. Comprehensive photo plates comparing all morphological details, as well as seed shape and structure, with those of the putatively related D. barrettiorum and D. hartmeyerorum are provided. Given D. maanyaa-gooljoo is only known from two small populations, a Priority One status under Conservation Codes for Western Australian Flora is recommended. Both populations occur within exclusive Native Title lands of the Dambimangari and Mayala Traditional Owners. This exciting new species discovery highlights the importance of both consultation with Indigenous people and herbarium revisions for alpha taxonomy and biodiversity research.
Keywords: Eudicots, carnivorous plants, Drosera barrettiorum, D. hartmeyerorum, leaf trichomes, Nepenthales, non-core Caryophyllales, sundews, taxonomy
 |
| Drosera maanyaa-gooljoo A.Fleischm. & T.Krueger. A. Habit of flowering plant (not all senescent cauline leaves fully shown, flowers drawn from photographs of living plants). B. Habit of juvenile plant. C. Leaf, adaxial side. D. Lamina, indumentum of abaxial (lower) surface. E. Stem and petiole bases. F. Stalked transversely crescent-shaped trichomes from petiole base. G. Sessile glands from petiole (also present on stem and inflorescence), left lateral view, right top view. H. Biseriate double-tipped trichomes from lamina abaxial surface. I. Bract, abaxial view (stalked transversely crescent-shaped trichomes inserted on the adaxial surface) J. Pedicel and calyx with indumentum of capitate trichomes. K. Gynoecium and anthers. L. Seed. A, C–F, I–L from A.J.M. Hopkins BA 0248 (holotype PERTH 05615631). B from C. Done 847 (PERTH 03783715). G, H from T. Krueger & A. Fleischmann 51 (PERTH 09546367). Drawing by A. Fleischmann. |
 |
| Comparison of petiole base "emergences" of Drosera maanyaa-gooljoo (left column), D. barrettiorum (centre-left column), D. hartmeyerorum (centre-right column), and D. serpens (right column). These "emergences" are not homologous in the four species, they represent trichomes in D. maanyaa-gooljoo and D. serpens but modified tentacles in D. barrettiorum and D. hartmeyerorum. A–D. Stem and petioles. The carnivorous tentacles of D. barrettiorum and D. hartmeyerorum reach all the way to the stem, slightly hiding their yellow "emergences" when viewed from side. E–H. Top view of petiole base. The "emergences" are clustered in a triangular pattern in D. maanyaa-gooljoo, D. barrettiorum and D. hartmeyerorum but not in D. serpens s.l. I–L. Lateral view of petiole base. M–P. Close-up of petiole base "emergences", showing the very different "emergence" head structures among the four species. Q–T. Bracts showing the same "emergences" as on petiole base in all four species. A, E, I, M, Q photographed in-situ at northern Yampi Peninsula, Western Australia, 09 June 2022. B, F photographed in-situ at Theda Station, Western Australia, 05 June 2022. C. photographed in-situ near Broome, Western Australia, 19 July 2020. D, H photographed in-situ near Katherine, Northern Territory, 12 March 2023. G photographed in-situ at Miluwindi Conservation Park, Western Australia, 10 April 2022. J, N, R from cultivated plants originating from Western Australia. K, O, S from cultivated material originating from near Kununurra, Western Australia. L, P, T from cultivated material originating from Japan. A–H. by T. Krueger. I–T by A. Fleischmann. |
Thilo Krueger, Adam T. Cross, Dambimangari Rangers and Andreas Fleischmann. 2023. Drosera maanyaa-gooljoo, A New Species of Drosera section Arachnopus (Droseraceae) from the Buccaneer Archipelago and Yampi Peninsula, northwest Kimberley Region, Western Australia. Phytotaxa. 618(1); 31-46. DOI: 10.11646/phytotaxa.618.1.3
It is essential for scientists who conduct research on Country to recognise the knowledge, skills, and interest in land management of Aboriginal people. We consulted with both Traditional Owner groups of the area where this species occurs over multiple years, and it was eventually decided to name this species with an Aboriginal name. Naming new species with Aboriginal words selected by the Traditional Owners themselves is rapidly becoming a common praxis in taxonomic research, especially for narrowly endemic taxa that only occur in a small area managed by a single Traditional Owner group (see, e.g., the recently described Drosera buubugujin). As in our case there are two different Traditional Owner groups speaking two different languages, a compromise for the species name had to be found. Each group selected their own name for this species and both words were then combined with a hyphen. The word “maanyaa” means centipede in the Worrora language spoken by the Dambimangari, a clear reference to the curved, sickle-shaped lamina and the extremely long tentacles of this species. The Mayala selected the word “gooljoo” which means grass in the Bardi language. As both words stand independently in the specific epithet, the use of a hyphen is permitted in this case according to the rules of taxonomic nomenclature.
