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. 2024 Oct 8:247:39-53.
doi: 10.3897/phytokeys.247.107961. eCollection 2024.

Three new species of Boesenbergia (Zingiberaceae) from Sabah, Malaysia

Nyee Fan Lam  1   2 , Halijah Ibrahim  1 , Yen Yen Sam  3 , Rozainah Mohammad Zakaria  1 , Axel Dalberg Poulsen  4
Affiliations

Three new species of Boesenbergia (Zingiberaceae) from Sabah, Malaysia

Nyee Fan Lam et al. PhytoKeys. .

Abstract

Three new species of Boesenbergia, B.bosuangii sp. nov., B.ganaensis sp. nov. and B.gokusingii sp. nov. were discovered in Sabah, Malaysia. Boesenbergiabosuangii is similar to B.stenophylla R.M.Sm. in the narrowly ovate lamina but differs in the shape of the bract and the calyx. Boesenbergiaganaensis is closely allied to B.burttiana R.M.Sm. but differs in the absence of a ligule, the longer petiole, the obtuse leaf base, the acute leaf apex, the bilobed calyx and the anther dehiscing by pores. Finally, B.gokusingii is similar to B.variegata R.M.Sm., by the single leafy shoot but differs in having an unequal, ovate lamina, a cordate leaf base, an acute leaf apex and the anther dehiscing by pores. The three new species are described and illustrated in detail. With the addition of these new species, there are in total 13 species with one variety in Sabah.

Keywords: Biodiversity; Borneo; endemic; new species; wild gingers.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Figure 1.
Figure 1.
BoesenbergiabosuangiiA habit B spike with one open flower C stamen, ventral view D flower E Bract, bracteole, calyx, epigynous gland, corolla lobes, staminodes, labellum, floral tube with stamen. (Photograph of Lam Nyee Fan 337; Photos: Lam Nyee Fan).
Figure 2.
Figure 2.
Boesenbergiabosuangii Lam N.F., sp. nov. A habit B bract C bracteole D calyx E epigynous glands, F spike with one open flower G flower H stamen, ventral view (Drawing by Lam Nyee Fan). Scale bars: 5 cm (A); 1 cm (B, C, D, E, F, G); 5 mm (H).
Figure 3.
Figure 3.
Distribution map of Boesenbergiabosuangii, EOO = 0 km2, AOO = 8 km2 (Bachman et al. 2011).
Figure 4.
Figure 4.
BoesenbergiaganaensisA habit B rhizome and roots C spike with one open flower D flower E bract, bracteole, calyx, corolla lobes, staminodes, labellum, floral tube with stamen F stamen, ventral view (Photos: Lam Nyee Fan).
Figure 5.
Figure 5.
Boesenbergiaganaensis Lam N.F., sp. nov. A habit, lateral view B bract C bracteole D calyx E epigynous glands F spike with one open flower G flower H stamen, ventral view (Drawing by Lam Nyee Fan). Scale bars: 5 cm (A); 1 cm (B, C, D, E, F, G); 1 mm (H).
Figure 6.
Figure 6.
Distribution map of Boesenbergiaganaensis, EOO = 0 km2, AOO = 4 km2 (Bachman et al. 2011).
Figure 7.
Figure 7.
BoesenbergiagokusingiiA habit B rhizome and roots C spike with one open flower D flower E bract, bracteole, calyx, corolla lobes, staminodes, labellum, floral tube with stamen F stamen, ventral view (Photos: Lam Nyee Fan).
Figure 8.
Figure 8.
Boesenbergiagokusingii Lam N.F., sp. nov. A habit, lateral view B spike C bract D bracteole E calyx F epigynous glands G flower H stamen, ventral view (Drawing by Lam Nyee Fan). Scale bars: 5 cm (A); 1 cm (B, C, D, E, F); 5 mm (G); 1 mm (H).
Figure 9.
Figure 9.
Distribution map of Boesenbergiagokusingii, EOO = 0 km2, AOO = 8 km2 (Bachman et al. 2011).
See this image and copyright information in PMC

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