| Nymphaea siamensis | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Nymphaeaceae |
| Genus: | Nymphaea |
| Species: | N. siamensis |
| Binomial name | |
| Nymphaea siamensis Puripany. [1] | |
 | |
| Nymphaea siamensis is endemic to Thailand [1] | |
Nymphaea siamensis is a species of waterlily endemic to Thailand. [1]
Nymphaea siamensis has ovoid, erect, 15 cm long and 5 cm wide rhizomes with oval bulblets. The broadly elliptic to ovate, 25 cm long, and 23 cm wide leaves have a subcoriaceous texture. The green adaxial surface can display reddish brown spotting. The purplish red abaxial surface features brown spotting. The brown, glabrous, 4 mm wide petioles have four primary air canals. [2]
The sterile, 8–12 cm wide flowers float on the water surface. They are attached to reddish brown, glabrous, 6.5 mm wide peduncles with six primary central and twelve secondary peripheral air canals. The 5-8 green, elliptic-ovate, 5 cm long, and 1.5 cm wide sepals have a rounded to acute apex. The 80-90 petals display pinkish white, and green colouration. Reproductive structures are absent. [2] The flowers are said to resemble Chrysanthemum flowers. [3]
The clonal species Nymphaea siamensis reproduces exclusively through the formation of bulblets on the rhizome, as well as occasional tubiferous flowers. [2]
Sexual reproduction is impossible in this species. The flowers are sterile and do not produce ovaries. [4] [2]
It was first described by Puripany. in 2014. [1]
The type specimen was collected by W.La-ongsri in Chiang Mai, Queen Sirikit Botanic Garden, Thailand on the 20th of August 2000. [5] [2]
It appears to be placed in Nymphaea subgenus Brachyceras, [2] however the absence of fertile flowers make it difficult to place. [4]
The specific epithet siamensis refers to Siam, a former name of Thailand. [6]
It is easily cultivated. [2]
Nymphaea is a genus of hardy and tender aquatic plants in the family Nymphaeaceae. The genus has a cosmopolitan distribution. Many species are cultivated as ornamental plants, and many cultivars have been bred. Some taxa occur as introduced species where they are not native, and some are weeds. Plants of the genus are known commonly as water lilies, or waterlilies in the United Kingdom. The genus name is from the Greek νυμφαία, nymphaia and the Latin nymphaea, which mean "water lily" and were inspired by the nymphs of Greek and Latin mythology.
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