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| #1 leaf is on the left, #2 on the right. |
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| Petioles of #2 are much thicker | Petioles in cross-section, #2 at the top. |
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| Petioles of #1 are all-green, while those of #2 are brown at the base. |
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| The rhizomes of #1 are elongate, 1-2.5 cm in diameter. | The rhizomes of #2 are bulbiform, to 6 cm in diameter |
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| #1 produces many offsets and often grows as a clump | #2 very rarely produces offsets. |