Curcuma ubonensis (Zingiberaceae), a new species of Curcuma subgen. hitcheniopsis from Eastern Thailand

Curcuma ubonensis Boonma, Saensouk, Maknoi & P. Saensouk sp. nov. (Zingiberaceae) was recently discovered in Ubon Ratchathani Province, Eastern Thailand. Specimen identification involves comparing their morphology with descriptions in similar species' protologues. We performed measurements...

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Main Authors: Piyaporn SAENSOUK, Thawatphong BOONMA, Charun MAKNOI, Surapon SAENSOUK
Format: Article
Language:English
Published: AcademicPres 2023-11-01
Series:Notulae Botanicae Horti Agrobotanici Cluj-Napoca
Subjects:
Online Access:https://www.notulaebotanicae.ro/index.php/nbha/article/view/13374
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author Piyaporn SAENSOUK
Thawatphong BOONMA
Charun MAKNOI
Surapon SAENSOUK
author_facet Piyaporn SAENSOUK
Thawatphong BOONMA
Charun MAKNOI
Surapon SAENSOUK
author_sort Piyaporn SAENSOUK
collection DOAJ
description Curcuma ubonensis Boonma, Saensouk, Maknoi & P. Saensouk sp. nov. (Zingiberaceae) was recently discovered in Ubon Ratchathani Province, Eastern Thailand. Specimen identification involves comparing their morphology with descriptions in similar species' protologues. We performed measurements on specimens collected from their natural habitats, both living and preserved. Despite its resemblances with Curcuma prasina Škorničk. in having greenish inflorescence with small purple flowers that lack of epigynous glands, yet this novel species displays distinct features of a brownish-red margin of petiole (vs. C. prasina has green margin), lamina elliptic, 3.8-7.0 cm wide, margin brownish red (vs. narrowly elliptic, 1.5-3.2 cm wide, margin green); coma bract present (vs. absent), fertile bracts uniquely triangular-obovate, apex rounded (vs. almost orbicular, apex acute), and labellum reddish purple with four white stripes by two stripes rarely pale yellow extending from the basal to half of the sinus, and another two stripes from the basal along the longitudinally of each lobe to half the length of the lobe, with yellow at the middle groove of the labellum almost to the base (vs. purple with a bright yellow and swollen median band composed of two central lines extending from the base to about two-thirds the length of the labellum towards the apex, sides of the labellum with paler lines radiating towards the margin). Meticulous examination and morphological comparison of Curcuma ubonensis with related species within the Curcuma genus reveals its novelty. We comprehensively accounted for its morphological traits, including illustrations, vernacular name, ecological preferences, phenology, distribution, traditional uses, conservation status, distribution map, and a comparative table to its ally species. Furthermore, we present an updated identification key for differentiating species within the Curcuma subgenus Hitcheniopsis in Thailand.
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spelling doaj.art-4e8f76c53155483290c9a66cf49884652023-12-22T16:11:49ZengAcademicPresNotulae Botanicae Horti Agrobotanici Cluj-Napoca0255-965X1842-43092023-11-0151410.15835/nbha51413374Curcuma ubonensis (Zingiberaceae), a new species of Curcuma subgen. hitcheniopsis from Eastern ThailandPiyaporn SAENSOUK0Thawatphong BOONMA1Charun MAKNOI2Surapon SAENSOUK3Mahasarakham University, Faculty of Science, Department of Biology, Diversity of Family Zingiberaceae and Vascular Plant for Its Applications Research Unit, Kantarawichai District, Maha Sarakham, 44150Brio Botanical Research Garden, 53 M.5 Ban Mai Village, Phikun Ok, Ban Na District, Nakhon Nayok Province, 26110; Mahasarakham University, Diversity of Family Zingiberaceae and Vascular Plant for Its Applications Research Unit, Walai Rukhavej Botanical Research Institute, Kantarawichai District, Maha Sarakham, 44150Romklao Botanic Garden, The Botanical Garden Organization, Phitsanulok, 65170Mahasarakham University, Diversity of Family Zingiberaceae and Vascular Plant for Its Applications Research Unit, Walai Rukhavej Botanical Research Institute, Kantarawichai District, Maha Sarakham, 44150 Curcuma ubonensis Boonma, Saensouk, Maknoi & P. Saensouk sp. nov. (Zingiberaceae) was recently discovered in Ubon Ratchathani Province, Eastern Thailand. Specimen identification involves comparing their morphology with descriptions in similar species' protologues. We performed measurements on specimens collected from their natural habitats, both living and preserved. Despite its resemblances with Curcuma prasina Škorničk. in having greenish inflorescence with small purple flowers that lack of epigynous glands, yet this novel species displays distinct features of a brownish-red margin of petiole (vs. C. prasina has green margin), lamina elliptic, 3.8-7.0 cm wide, margin brownish red (vs. narrowly elliptic, 1.5-3.2 cm wide, margin green); coma bract present (vs. absent), fertile bracts uniquely triangular-obovate, apex rounded (vs. almost orbicular, apex acute), and labellum reddish purple with four white stripes by two stripes rarely pale yellow extending from the basal to half of the sinus, and another two stripes from the basal along the longitudinally of each lobe to half the length of the lobe, with yellow at the middle groove of the labellum almost to the base (vs. purple with a bright yellow and swollen median band composed of two central lines extending from the base to about two-thirds the length of the labellum towards the apex, sides of the labellum with paler lines radiating towards the margin). Meticulous examination and morphological comparison of Curcuma ubonensis with related species within the Curcuma genus reveals its novelty. We comprehensively accounted for its morphological traits, including illustrations, vernacular name, ecological preferences, phenology, distribution, traditional uses, conservation status, distribution map, and a comparative table to its ally species. Furthermore, we present an updated identification key for differentiating species within the Curcuma subgenus Hitcheniopsis in Thailand. https://www.notulaebotanicae.ro/index.php/nbha/article/view/13374CurcumaTaxonomyUbon RatchathaniZingiberalesZingibereae
spellingShingle Piyaporn SAENSOUK
Thawatphong BOONMA
Charun MAKNOI
Surapon SAENSOUK
Curcuma ubonensis (Zingiberaceae), a new species of Curcuma subgen. hitcheniopsis from Eastern Thailand
Notulae Botanicae Horti Agrobotanici Cluj-Napoca
Curcuma
Taxonomy
Ubon Ratchathani
Zingiberales
Zingibereae
title Curcuma ubonensis (Zingiberaceae), a new species of Curcuma subgen. hitcheniopsis from Eastern Thailand
title_full Curcuma ubonensis (Zingiberaceae), a new species of Curcuma subgen. hitcheniopsis from Eastern Thailand
title_fullStr Curcuma ubonensis (Zingiberaceae), a new species of Curcuma subgen. hitcheniopsis from Eastern Thailand
title_full_unstemmed Curcuma ubonensis (Zingiberaceae), a new species of Curcuma subgen. hitcheniopsis from Eastern Thailand
title_short Curcuma ubonensis (Zingiberaceae), a new species of Curcuma subgen. hitcheniopsis from Eastern Thailand
title_sort curcuma ubonensis zingiberaceae a new species of curcuma subgen hitcheniopsis from eastern thailand
topic Curcuma
Taxonomy
Ubon Ratchathani
Zingiberales
Zingibereae
url https://www.notulaebotanicae.ro/index.php/nbha/article/view/13374
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AT charunmaknoi curcumaubonensiszingiberaceaeanewspeciesofcurcumasubgenhitcheniopsisfromeasternthailand
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