Exacum wightianum Arn., Ann. Sci. Nat., Bot. II, 11: 176 1839. (Syn: Exacum foliosum Griseb.; Lisianthius zeylanicus Spreng. (Unresolved));
Common name: Wight’s Persian Violet
Shrubs, stem 4-winged. Leaves opposite, 6 x 4 cm, broadly ovate, lanceolate, acuminate, membranous, 5-nerved, sessile. Cymes axillary and terminal; calyx lobes winged, 12 mm, lanceolate, wings to 4 mm broad; corolla rotate, tube 6 mm, lobes 2 cm, oblanceolate, apiculate; stamens 5, filaments 4 mm; ovary many ovuled, style 8 mm, stigma sub capitate.
Flowering and fruiting: April-July
Southern Western Ghats (Endemic)
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi
Exacum wightianum collected from Muthikulam forest, Palakkad during October 2013.
Exacum is a genus which I know very little. Thanks for showing another species.
Plant for id request blue flower : 2 posts by 2 authors. Attachments (3)
Plant for id request. State KERALA. october 2015
Exacum wightianum, Family Gentianaceae
efloraindia: 141011 BRS63: Date/Time-Location- )7.10.2011
Place, Altitude, GPS- Munnar (Kerala) 1800 MSL
Habitat- Urban (Road side)
Exacum sp. of Gentianaceae family.
Calyx lobes with broad dorsal wings that are prominently nerved (not so clear in the picture), leaves 5 nerved suggests that this could be Exacum petiolare.
Leaves are petioled according to the key provided by Gamble here it seems that leaves are sessile.
This appears to be interesting
I agree with …
The leaves here are clearcut sessile. Petals are also 5. Doesn’t fit in any key from BSI Maharashtra. or Cooke’s flora. Is it wild or garden plant?
Yes I agree with … that this shows some striking difference from the one that is described in the key provided by Gamble as well.
Further, I ruled out of the possibility of this being E. petiolare because of 5 petals against the 4 petals mentioned in keys.
… where exactly from Munnar you collected this plant?
I think this is Exacum petiolare of Gentianaceae
But leaves are sessile here! No petiole for petiolare
Yes … You are right. I overlooked that completely. This must be E. pedunculatum.
I think close to images at Exacum wightianum Arn.
I also picked this up from Munnar, Kerala, attaching Picture of my collection.
Exacum wightianum, : 2 posts by 2 authors. Attachments (1)
Pothamedu near Munnar, Kerala, in the Nilgiris
First week of October 2018