| Growth aspect | Erect, 1.5–1.8 m tall | Predominantly scandent, rarely erect, up to 3 m tall | Erect, up to 0.5 m tall |
|---|
| Diameter of basal stem | 1.8–2.5 cm long | 1–1.5 mm long | ca. 4 mm long |
|---|
| Internodes | (3.5–)4–4.5 cm long | 8–12 cm long | 4–10 cm long |
|---|
| Leaf-blade | 10–17 × 3.8–5 cm, elliptic or oblong-elliptic, concolorous, base conspicuously asymmetric, margin glabrous, apex caudate | 4–12.5(–14) × 1–2.5 cm, linear- lanceolate, ovate or lanceolate, concolorous, base symmetric or slightly asymmetric, margin shortly ciliate in the upper third, apex acuminate | 4.8–10(–18.5) × 2.7–5 cm, lanceolate, discolorous, base asymmetric, margin shortly ciliate in the upper third, apex acuminate |
|---|
| Leaf-sheaths | (1.6) 2–2.6 cm long, densely, and shortly velutine | 1–2 cm long, glabrous or pubescent, especially in the region opposite the leaf insertion | 1.5–2.5 cm long, pilose |
|---|
| Cincinnus bracts | (7–)10–10.8 × (2.3–)2.9–3 mm, ovate or lanceolate | 3–4 × 1–2 mm, linear | 2.2–2.7 × 1–1.5 mm, linear |
|---|
| Floral bud | 8.6–8.8 mm long, oblongoid or ovoid | 6.9–7 mm long, ellipsoid to | 5–7.5 mm long, ovoid |
|---|
| Flowers (diam.) | 1.8–1.9 cm | 1.2–2.5 cm | ca. 1.5 cm |
|---|
| Petals | 12.9–13 × 8–8.1 mm, widely obtrulate or obovate, lilac to purple with white basal third | 7.8–8 × 3.9–4 mm, obovais purple to purplish-blue with white basal third | 10–12 × 5–7 mm, obovate, purple to purplish-blue with withe basal third |
|---|
| Pollen sacs coloration | Purple | Blue | Blue |
|---|
| Capsules | Subglobose and globose, 9–12 × 6.9–8 mm, verrucose at apex | Globose 5–6(–10) × ca. 6 mm, smooth at apex | Globose or ovoid, 15–17 × 6–13 mm, smooth at apex |
|---|