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 Grasslands Southern Western Ghats (Endemic) (Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi from India Biodiversity Portal) .
Gentianaceae week: Exacum wightianum : 4 posts by 4 authors. Attachments (3). 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. This appears to be interesting Yes I agree with … that this shows some striking difference from the one that is described in the key provided by Gamble as well. 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. Exacum wightianum Exacum wightianum, Pothamedu near Munnar, Kerala, in the Nilgiris First week of October 2018 .       FOR VALIDATION :: ¿ Exacum pedunculatum L. ? The Nilgiris :: Jan 29, 2026 · 1:21 PM IST: 7 images. FOR VALIDATION :: ¿ Exacum pedunculatum L. ? The Nilgiris :: Jan 29, 2026 · 1:21 PM IST Naduvattam, about 1718 m asl Exacum courtallense Arn. ?? Again, many thanks …, for pointing to the correct ID. Found from the internet: E. courtallense will have five petals, while E. pedunculatum consistently has four. E. pedunculatum has noticeably long stalks supporting its flowers, whereas E. courtallense has a more compact, bushy habit. I think this is Exacum wightianum. As per notes under Exacum wightianum (at https://www.researchgate.net/publication/326462348_A_TAXONOMIC_REVISION_OF_EXACUM_L_GENTIANACEAE_-_EXACEAE_IN_SOUTH_INDIA) “Exacum wightianum is a showy plant with bright violet flowers. It is easily distinguished by its broadly winged stem, sessile, leathery leaves, drooping fruits and anthers with a prominent papilla near the apex.” Also see https://efloraofindia.com/efi/exacum-wightianum/ https://indiaflora-ces.iisc.ac.in/herbsheet.php?id=4875&cat=13 https://indiaflora-ces.iisc.ac.in/herbsheet.php?id=4865&cat=13 https://www.flowersofindia.net/catalog/slides/Leafy%20Persian%20Violet.html https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:367578-1  Ok, many many thanks … I have uploaded a cropped photo to show the winged branch. 1 image. .     Exacum wightianum Arn. :: The Nilgiris :: Jan 31, 2026 · 1:05 PM IST: 4 images. Exacum wightianum Arn. The Nilgiris :: Jan 31, 2026 · 1:05 PM IST Kodamulal, about 1816 m asl
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Exacum wightianum
Updated on April 8, 2026