| Height (cm) | 2.2 | 4.5-8 | 5-18 |
| Stem |
| Length (cm) | 0.8 | 2.4-4.2 | 1.5-16 |
| Form | simple | branched | branched |
| Colour | whitish | reddish-brown to orange | dark pinkish to reddish-brown (to almost grey or orange) |
| Inflorescence (flower number) | Solitary | 1-6 | 1-3 |
| Leaves |
| Number | 6 | 4-11 | 3-10 |
| Size |
| Length (mm) | 3-4 | 2-5 | 4.5-5.5 |
| Width (mm) | 1 | 1-2 | 1.8-2 |
| Colour | pale, whitish | light brown to reddish | light brown to pinkish |
| Bracts |
| Shape | broadly triangular to ovate | lanceolate triangular | broadly triangular to ovate |
| Margin | entire | entire to irregularly dentate | entire to irregularly dentate, often deeply dissected |
| Size |
| Length (mm) | 5 | 4-8 | 6-8 |
| Width (mm) | 2 | 2-3 | 2.5-4 |
| Colour | pale greenish to brown | reddish to brown | pinkish to brown |
| Pedicel colour | greenish | reddish-brown to orange | dark pinkish to reddish brown (to almost grey or orange) |
| Flowers |
| Size |
| Length (cm) | 1.5 | 1.8-2.3 | 2.6-2.8 |
| Width (cm) | 1.2 | 0.7-1 | 1.2-1.3 |
| Colour | pale to dark orange | dark yellow to orange | white to bright yellow |
| Floral tube (hypanthium) |
| Shape | conical | funnel-shaped towards the base, apically urceolate | funnel-shaped towards the base, apically urceolate |
| Colour | outer surface more or less uniformly bright orange | dark yellow to orange, with 6 brownish-orange, prominent longitudinal ribs alternating with 6 brown-orange longitudinal stripes on outer surface | white to bright yellow at the top, with six brownish non-prominent longitudinal ribs and six yellow to brown longitudinal stripes on outer surface |
| Surface texture |
| Outer | sparsely covered with pale orange, simple trichomes (occasionally apically stellate) | glabrous (trichomes absent) | glabrous (trichomes absent) |
| Inner | inner surface partly convex/reticulum | inner surface weakly reticulated, especially apically | inner surface reticulated |
| Outer tepals | 3, rather reduced and inconspicuous, somewhat divided along the margin to form a narrow, inconspicuous fringe around the floral tube mouth | 3, conspicuous, entire or slightly sinuate, often single-toothed, forming a fringe around the floral tube mouth | 3, deeply divided into 8-10 acute lobes forming a conspicuous fringe around the floral tube mouth |
| Inner tepals (and mitre) | pale whitish-orange, distally connate, forming an elevated, more or less circular, umbrella-like mitre; lobes proximally flattened with revolute margins (not filiform), arched over the floral tube; upper surface covered sparsely with conspicuous orange trichomes | orange, distally connate, forming an elevated, more or less flat, triangular mitre; lobes proximally filiform, pillar-like, arched over the floral tube; trichomes absent | bright yellow to brownish-yellow, distally connate, forming a conspicuously elevated, more or less triangular mitre; lobes proximally filiform, pillar-like, arched over the floral tube; trichomes absent |
| Annulus (apical part of floral tube) | present (upper surface covered with short trichomes) | absent | absent |
| Connectives |
| Colour | orange | white | white |
| Length (mm) | 3 | 5-6 | 7 |
| Inner surface | glabrous | with prominent longitudinal rib extending along inner side | with prominent longitudinal rib extending along inner side |
| Apex of each connective | 2 lobes, each pointed with a transparent trichome | 1 central lobe (extension of rib) and 2 smaller lobes, each lobe with a long transparent trichome | 1 central lobe (extension of the rib) and 2 smaller lobes pointing somewhat centrifugally, each with a transparent trichome |
| Outer surface | lateral appendage protruding towards floral tube, horn-like on each side, shallowly dentate and sparsely hairy on free margins | lateral appendage box-shaped, protruding towards floral tube, not reaching apex of connective, shallowly dentate and hairy on apical margin, with tufts of hairs on lateral margins | lateral appendage box-shaped, protruding towards perianth tube, not reaching the apex of the connective, shallowly dentate and sparsely hairy on free margins |
| Ovary |
| Colour | flushed pale orange and greenish | dark brown | dark reddish-brown |
| Pistil |
| Style | slender | short | short |
| Stigma | lobes narrowly-rectangular, not furrowed; orange | lobes rectangular, longitudinally furrowed; dark brown | lobes rectangular, longitudinally furrowed; dark reddish-brown |
| Capsule |
| Colour | greenish | pale brown to reddish at maturity | dark brown to blackish or reddish, maturing to become pinkish |
| Pedicel | elongated to 60 mm | 10-25 mm | very short (dimensions not known) |