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| Curcuma lindstromii Škorničk. & Soonthornk., in Leong-Škorničková, Soonthornkalump, Niwesrat & Lim, 2022. |
Curcuma lindstromii Škorničk. & Soonthornk. (Zingiberaceae: Zingiberoideae), a new species from Thailand, is described. It is compared to the morphologically closest species from Curcuma subg. Ecomatae, Curcuma rhomba Mood & K.Larsen. A detailed description, a colour plate and information on its distribution, ecology, phenology and uses are provided. A provisional IUCN conservation assessment of Vulnerable is proposed for this species. A lectotype is designated for the name Curcuma stenochila Gagnep.
Keywords. Curcuma rhomba, Curcuma stenochila, Curcuma subgenus Ecomatae, gingers, lectotypification, Vulnerable, Zingibereae
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| Curcuma lindstromii Škorničk. & Soonthornk. cultivated at Nong Nooch Tropical Botanical Garden. A. Inflorescences (top view). B. Habit. C. Flower in bract, flower removed from bract and dissected flower (from left: floral tube with ovary, calyx and stamen attached, upper row dorsal and lateral corolla lobes, lower row labellum and two lateral staminodes. D. Inflorescence with detail of flower in front view. E. Details of ligule. F. Rhizome. G. Stamen still attached to floral tube from front, back and side view. Scale bar: 1 cm. All from the type collection, Leong-Škorničková & Lim JLS-3833. (Photos: J. Leong-Škorničková) |
Curcuma lindstromii Škorničk. & Soonthornk., sp. nov.
(subgenus Ecomatae)
Similar to Curcuma rhomba Mood & K.Larsen in general habit, flower colour and shape, but differs by the prominently clawed labellum with dark maroon tips (vs labellum without a basal claw and without differently coloured tips in C. rhomba), staminodes with dark maroon tip (vs tip of the same colour as the rest of the staminode), anther with 3–4 mm long narrowly conical spurs, producing mucilage (vs c. 1 mm short broadly conical spurs with blunt apices, not producing mucilage).
– TYPE: Ex culta, Nong Nooch Tropical Botanical Garden (acc. no. NN 9329), 31 August 2022, LeongŠkorničková & Lim JLS-3833 (holotype BKF (including flowers in spirit as part of a single specimen); isotypes E, QBG, SING (SING including flowers in spirit as part of a single specimen); originally collected in Thailand, Sa Kaeo Province, Aranyaprathet District, 29 August 1999, A. Lindstrom s.n.). (Fig. 1, 2)
Habitat and phenology. Growing in semi-shade, in shallow mulch in limestone crevices on steep limestone cliffs in dry deciduous forests at 100–300 m above sea level. The species flowers from mid-July till September, with fruiting extending well into November.
Eponymy. We name this species after our colleague Anders J. Lindstrom, an excellent botanist who has dedicated his life to cycad taxonomy and conservation, and to building ex situ living collections for various plant groups, including gingers, at Nong Nooch Tropical Botanical Garden. The description of this species is based on his collections made more than 20 years ago and sustained in the research living collections of Nong Nooch Tropical Botanical Garden.
Vernacular name and uses. As the vernacular name Wan Pet Ma (ว่านเพชรม้า) is used for Curcuma stenochila Gagnep. as well as for this species, we propose Krachiao Lindstrom (กระเจียวลินด์สตรอม) [= Lindstrom’s Curcuma] for this species. No uses have been reported but the species has a good potential as an ornamental plant.
J. Leong-Škorničková, S. Soonthornkalump, S. Niwesrat and S.Q. Lim. 2022. Curcuma lindstromii (Zingiberaceae: Zingiberoideae), A New Species from southeastern Thailand. Gardens’ Bulletin Singapore 74(2): 243–250.
www.nparks.gov.sg/sbg/research/publications/gardens'-bulletin-singapore/-/media/sbg/gardens-bulletin/gbs_74_02_y2022/74_02_09_y2022_v7402_gbs_pg243.ashx
