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Table 1 Comparison of taxonomical characters between Pittosporum longisepalum and P. peridoticola

From: Pittosporum peridoticola (Pittosporaceae), a new ultramafic obligate species restricted to Kinabalu Park (Sabah, Malaysia)

Character

P. longisepalum

P. peridoticola

Leaf size (cm)

4–6 × 1.5–2

2–4 × 0.8–2

Leaf shape

Elliptic

Obovate

Leaf apex

Acute to acuminate

Rounded, acute to shortly cuspidate

Leaf base

Cuneate, decurrent

Cuneate, decurrent

Leaf hairiness

Slightly pubescent beneath

Glabrescent, glabrous when mature

Veins in upper surface

Secondary veins slightly impressed

Secondary veins slightly impressed

Number of veins

5–7 pairs

4–6 pairs

Flowering habit

Among leaves

Among leaves

Petal length (mm)

~8

6–16 mm

Ovary

Hairy

Hairy

Sepal length (mm)

~7

3–4 mm

Peduncle length (cm) + hairiness

2–3; hairy

1–2.5; hairy

Leaf margin

Entire; recurved

Entire; slightly recurved

Petiole (mm)

~5

Very short to c. 3

Filament length (mm)

~3

5 mm

Anther

Oblong; apiculate

Oblong; apiculate

Style

~1.5 mm

2.5 mm

Stigma

Capitate

Capitate