Sunday, February 28, 2016

[Botany • 2014] Nymphaea siamensis Puripany. | บัวจงกลนี • A New Species of Waterlily native to Thailand

บัวจงกลนี | Nymphaea siamensis  Puripany.  

Morphological and genetic comparison between Nymphaea siamensis and other Nymphaea species were conducted. N. siamensis is a new species of Nymphaea found in Thailand. Lacking carpels and anthers, its indeterminate flowers feature multiple whorls of pink petals. The species could be propagated vegetatively via bulblets and shows closest similarities to Nymphaea ‘Nilubon’, an unclassified landrace found in the northeast of Thailand. N. siamensis and N. ‘Nilubon’ have similar leaf, stem and root morphology. Like N. siamensis, N. ‘Nilubon’ also produces bulblets. However, flowers of N. ‘Nilubon’ have purple petals and are complete with both stamens and pistils. N. siamensis differs from the other Nymphaea species in its lack of locules, which made it difficult to be classified. Nonetheless, its morphological characters appear closer to species in the subgenus Brachyceras than in the subgenus Lotos. As a consequence, the species may be classified under the subgenus Brachyceras of the genus Nymphaea. Cluster and neighbor joining analyses of 34 polymorphic RAPD alleles revealed that N. siamensis was most similar to N. ‘Nilubon’ in our study. In addition, parsimony analysis revealed that it might have a separate origin from the other Nymphaea species in our studies. We propose that N. siamensis be qualified as a new plant species native to Thailand.

Keywords: Nymphaea siamensis, new species, nomenclature, morphology, RAPD

Puripunyavanich, V., La-ongsri, W., Boonsirichai, K. and Chukiatman, P. 2014. Nymphaea siamensis, the New Species of Waterlily in Thailand. Acta Hortic. 1035, 87-98. DOI: 10.17660/ActaHortic.2014.1035.10

บัวจงกลนี (Nymphaea sp.) มีชื่อปรากฏในเอกสารมาตั้ง แต่สมัยสุโขทัย ปัจจุบันยังไม่สามารถจำแนกชนิดได้ อาจจะเป็นชนิดใหม่ และเป็นพืชเฉพาะถิ่นของไทย หรือเป็นบัวพันธุ์ผสมโดยฝีมือคนไทยในช่วงสมัยรัชกาลที่ 5