| Plant total height (cm) | 185.5 | 189.5 | 121.9 - 152.4 | 0.6 - 1.0 |
| Inflorescence features | Radical, on erect, rigid peduncle, dense, ovate-oblong, apex acute | Radical, on erect, rigid peduncle, dense, elongated ovate-oblong, apex acuminate | Radical, on thick and rigid, short peduncle, ovate, apex acute | Radical, on erect peduncle, ovate to conical, apex acute |
| Total inflorescence length (cm) | 35.0 - 37.0 | 30 | Not reported | Not reported |
| Peduncle length (cm) | 13.0 - 15.0 | 15 | 5 | 2.0 - 6.0 |
| Peduncle width (mm) | 9.0 - 9.2 | 9.4 | n/a | n/a |
| Spike length (cm) | 22 | 15 | 5.0 - 7.5 | 5.0 - 10.0 (12.0) |
| Spike width (mm) | 38.1 - 38.6 | 34.4 | n/a | 3.0 - 4.0 |
| Bract features | Imbricated, broadly ovate, with papery margin, apex obtuse-acute, protuberant, velvety-villous, dark red | Imbricated, broadly ovate, with papery margin, apex obtuse, protuberant, velvety-villous, dark red | Imbricated, broadly ovate, convex, ventricose, apex cuspidate, hairy at all part, dull dark reddish or greenish | Ovate to cuspidate, upper ones narrower and more pointed, villous |
| Flowering month | August | August | August-February (in Calcutta Garden) | Not reported |
| Duration of flowering (days) | 21 - 22 | 19 | Not reported | Not reported |
| Number of flowers per spike | 47 - 48 | 40 | Not reported | Not reported |
| Flower features | Pale-yellow, zygomorphous, monoclinous, ephemeral, epigynous, with light fragrance, longistylous | BIG in size, white to pale pink | White | |
| Calyx features | Glabrous, membranous, apex shortly serrated | Two-dentate | White in colour | |
| Corolla features | Lobes subequal in length, lanceolate, pale-yellow, longitudinally striped, slightly concave in hood | Lobes lanceolate, dorsal lobe ascended, rostrate-acuminate, apex concave | White, dorsal lobe larger than lateral lobes | |
| Labellum features | Pale-yellow with pinky tinge in the bottom of mid-lobe, soft-velvety, mid-lobe obcordate, margin slightly undulate-reflexing, mid-lobe bifurcated in the middle, lateral staminode ovate-lanceolate, apex acute | Light-yellow, soft-velvety, mid-lobe obcordate, margin slightly undulate-reflexing, lateral staminode ovate-lanceolate, apex acute | Labellum ovate, apex emarginate, notched bellow convex | Labellum white with a yellow tinge inside; midlobe obovate, emarginate; side lobes small |
| Stamen and carpel features | Another c. 1.6 cm long, light yellow, thecae cylindrical, parallel, dehiscence longitudinal, anther crest hooded, wrapped around style; style white, glabrous, filiform; stigma white, scarcely wider than style, tubular, downwards-facing, ostiole ciliate | Another large, subsessile, with anther crest protruded over curved lip, elevated above anther; style clavate, apex curved, slightly protuberate; stigma convex, ciliate | Not reported | |
| Capsule (fruit/seed) | Not observed | Capsule obovate, tufted, glabrous, cherry-size; seeds, black, aril big, white | Not reported | |