S2 Fig -

Comparison for Leptospermum scoparium (upper) and Kunzea (lower) of equatorial diameter measured by palynologist using a light microscope (denoted by suffix “_h”), and maximum Feret diameter measured by Classifynder (denoted by suffix “_d”). (TIF)</p

Polar and equatorial views of <i>Leptospermum scoparium</i>, Part 3.

Scale bar = 10 μm. (1a-1e) Otaipango, (2a-2e) Northern South Island, (3a-3e) Wellington, (4a-4e) Papa, (5a-5e) Southern South Island.</p

Fig 1 -

Collection localities for (a) Kunzea and (b) Leptospermum scoparium specimens.</p

Polar and equatorial views of <i>Leptospermum scoparium</i>, Part 1.

Scale bar = 10 μm. (1a-1e) Surville Cliffs, (2a-2e) Flat Silver, (3a-3e) East Cape, (4a-4e) Waikato Peat Bog, (5a-5e) Coromandel Swamp.</p

Polar and equatorial views of <i>Kunzea</i>, Part 2.

Scale bar = 10 μm. (1a-1e) K. linearis, (2a-2e) K. tenuicaulis, (3a-3e) K. salterae, (4a-4e) K. robusta, (5a-5e) K. triregensis.</p

Principal component analysis of the seven core parameters for <i>Leptospermum scoparium</i> and <i>Kunzea</i> pollen in polar view.

Polygons show the highest posterior density region for each species, thick lines = 95% range, thin lines = 99% range, calculated using R package coda [44].</p

Herbarium specimens studied–<i>Kunzea</i>.

(XLSX)</p

Classifynder measurements of area vs maximum Feret diameter of pollen in polar view.

Leptospermum scoparium (red, n = 11932 specimens) and Kunzea (grey, n = 3678). Polygons show the 95% range of the highest posterior density region for each species, calculated using R package coda [44].</p

Fig 2 -

Acetolysed Leptospermum scoparium pollen in polar view (left) and equatorial view (right) showing equatorial (E) and polar (P) dimensions.</p

Polar and equatorial views of <i>Kunzea</i>, Part 1.

Scale bar = 10 μm. (1a-1e) K. toelkenii, (2a-2e) K. sinclairii, (3a-3e) K. serotina, (4a-4e) K. amathicola, (5a-5e) K. ericoides.</p