| Petiole |
Sessile or subsessile |
Petiolate, 3–12 mm long |
| Leaf blade shape |
Oblong-rhombic, or elliptic-oblong; base cuneate-attenuate, and decurrent into slightly broad wings of extremely inconspicuous petiole |
Elliptic or oval; base cuneate to broadly cuneate |
| Leaf blade margin |
Obviously regularly 6–8 triangle to obtuse-triangle serrate from the base |
Shallowly 12–14 serrate |
| Indumentum of leaf blade |
Densely pubescent and sparsely villous on both surfaces |
Pubescent on both surfaces |
| Peduncle indumentum |
Pubescent sparsely glandular-pubescent |
Pubescent |
| Bract |
1–2(–3), usually withered when flowering, free, narrowly triangular; 2–3 × ca. 1 mm; outside puberulent, inside verrucose and glabrous |
Opposite, oblanceolate; 8–22 × 4–9 mm; pubescent on both sides |
| Corolla |
Outside glandular pubescent, inside glabrous |
Outside pubescent, inside sparsely puberulent |
| Calyx lobes size |
5–8 × 4–5 mm |
3–5 × 0.8–1.1 mm |
| Filaments indumentum |
Glandular pubescent |
Glabrous |
| Staminodes |
2 |
3 |
