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| 1 |
Leaf blade large, widest part more than 7 cm, apex acuminate, base rounded or cordate |
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(2) |
| + |
Leaf blade smaller, widest part often less than 7 cm, apex acute, shortly acuminate, or acuminate, base cuneate or nearly rounded or subtruncate, never cordate |
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(3) |
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| 2 (1) |
Leaf blade broadly lanceolate or oblong-lanceolate, rarely oblanceolate, (15-)30-55(-70) × (7-)8-15 cm, base cordate or rounded, lateral veins 24-35 pairs; fruit with hairs 1-3 mm. |
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1 K. tenuinervia |
| + |
Leaf blade oblanceolate, (15-)24-40 × 7-13 cm, widened at middle, base rounded, lateral veins 20-25 pairs; fruit with hairs 0.5-1 mm. |
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2 K. linifolia |
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| 3 (1) |
Anthers sessile; fruit with hairs 0.1-1 mm |
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(4) |
| + |
Anthers nearly stalked; fruit with hairs 1-2 mm |
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(5) |
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| 4 (3) |
Leaf blade with margins often not parallel, often early glabrescent abaxially; style ca. 1.5 mm; fruit small, less than 2 cm, with rusty nearly granular pubescence. |
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3 K. globularia |
| + |
Leaf blade with margins nearly parallel, abaxial surfaces with stalked stellate pubescence, glabrous with age; style ca. 0.5 mm; fruit large, 2-3 cm, with rusty dendritic pubescence. |
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4 K. elegans |
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| 5 (3) |
Leaf blade often oblong-lanceolate, apex acute or acuminate, abaxial surface finely stellate hairy; fruit longer, usually more than 3 cm. |
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5 K. tonkinensis |
| + |
Leaf blade often lanceolate or linear-lanceolate, apex acuminate or long acuminate, abaxial surface often pallid, early glabrescent, at first with minutely granular or powdery stellate hairs, persistent along midvein and lateral veins; fruit usually less than 3 cm. |
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6 K. lenta |
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