Thank you very much Santhan Ji. As per descriptions you have provided here I understand that the underside of leaves should be regarded as an easily recognizable KEY to identify one from another-
(i) under surface green with purple spots = *caerulea* (ii) under surface reddish with violet-black dots = *micrantha* Regards On Saturday, 25 October 2014 17:19:46 UTC+5:30, Santhan P wrote: > > *Nymphaea caerulea Savigny* > > Leaves entire or slightly wavy at base, orbicular or ovate-orbicular, > narrowly > peltate, becoming 30 to 40 cm. in diameter; green above; under surface green > with > small dark purple spots, purplish all round near margin. Flowers 7 to 15 cm. > across, > open from 7.30 a. m. to 12 m. Buds conical. Sepals thickly marked with black > lines > and dots. Petals 14 to 20, lanceolate, light blue above, lower half dull > white. Stamens > 50 to 73; appendage long (0.5 cm. on outermost stamens), slender, pale blue > > *Nymphaea micrantha Guillemin & Perrottet* > > Leaves small, round-cordate, peltate, entire, petiolate ; petioles very long, > slender ; > lobes divaricate, acuminate ; under surface reddish, marked with violet-black > dots ; upper > surface glabrous, pale green, in mature plants bulbiferous at the summit of > the petiole ; > stigmatic rays 15. > > > Notes. — Hooker & Thomson record, and the herbaria bear them out, that no > sharp line could be drawn between the varieties of this species as it occurs > in India, > but they were certainly wrong in including the African plants. The three > extreme > Indian forms are themselves fairly recognizable. The margin of the leaf may > be al- > most entire. The pustules so evident on the leaf of our N. versicolor > cultivated from > seeds sent by Mr. Gollan of Saharanpur, India, may be present at times in the > other > varieties. Our plant also had a great number of bulbils on the caudex, as > shown in > several herbarium specimens both of blue and pink forms. > > > https://archive.org/stream/waterliliesmonog00cona/waterliliesmonog00cona_djvu.txt > > > On Thursday, October 23, 2014 11:49:09 PM UTC+5:30, surajitkoley wrote: >> >> How to differentiate *Nymphaea micrantha* Perr. & Guill. from *Nymphaea >> caerulea* Savigny? >> Thank you >> Regards >> >> -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/indiantreepix. For more options, visit https://groups.google.com/d/optout.
