Characters |
M. oblanceolata
|
M. tonkinensis
|
M. vietnamensis
|
M. inaequalis
|
M. larsenii
|
Stem |
Habit |
erect to sub-erect |
procumbent |
procumbent |
procumbent |
erect |
Stipules |
Shape |
obcordate |
rounded to reniform |
oblong to obovate |
oblong to transversely oblong |
oblong to transversely oblong |
Length |
8–10 mm |
3–5 mm |
3–8 mm |
1–5 mm |
2–3 mm |
Leaves |
Form |
isophyllous |
isophyllous |
isophyllous |
anisophyllous |
isophyllous |
Petiole length |
2–4 cm |
0.5–1.5 cm |
1–2 cm |
0.5–1.5 cm |
0–5 cm |
Blade shape |
elliptic to oblanceolate |
ovate, elliptic to oblanceolate |
elliptic to obovate |
ovate, elliptic to obovate |
elliptic to oblanceolate |
Blade size |
10.5–18.2 × 3.2–4.5 cm |
3–8 × 1–3 cm |
6–17 × 2–7 cm |
8–12 × 6–7 cm |
10–30 × 3–8 cm |
Lateral veins |
12–16 pairs |
4–6 pairs |
5–10 pairs |
5–8 pairs |
10–11 pairs |
Inflorescence |
Position |
terminal |
terminal |
axillary |
terminal or pseudoaxillary |
terminal |
Shape |
umbrella-like cymes |
head-like cymes |
head-like cymes |
umbrella-like cymes |
star-like cymes |
Peduncle length |
2–5.5 cm |
1–2 cm |
0.5–1 cm |
0.2–0.5 cm |
1–2 cm |
Calyx |
Indumentum |
puberulent adaxially |
puberulent adaxially |
puberulent adaxially |
puberulent-hispiduous adaxially |
unknown |
Tube length |
2.2–2.5 mm |
0.5 mm |
0.3 mm |
0.5 mm |
1–2 mm |
Lobe shape |
deltoid, equal in size |
ovate to obovate, equal in size |
triangular, equal in size |
triangular, equal in size |
triangular, unequal in size |
Lobe size |
1–1.3 × 0.3–1 mm |
2.5 × 1.2 mm |
1.7–2.2 × 1.1–1.7 mm |
2–2.5 × 1.3–1.5 mm |
1–3 mm |
Corolla |
Lobe orientation |
revolute |
incurved to oblique |
recurved |
recurved |
recurved |
Lobe shape |
deltoid to ovate |
triangular |
triangular |
triangular |
triangular |
Lobe size |
2.5–3 × 2–2.5 mm |
1.1 × 1 mm |
1.9–2.2 × 1.3–1.7 mm |
2.5 × 1.5 mm |
1.7–2 × 1.4–1.6 mm |
Tube size |
4–5 × 2–2.4 mm |
3.6 × 1.5 mm |
4.4–5 × 2–2.7 mm |
4.2–4.5 × 2.2 mm |
2.5–3.0 × 1.8–2.2 mm |