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| 1 |
Epicalyx lobes 4 or 5, oblong-lanceolate, 4-5 mm wide. |
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1 A. manihot |
| + |
Epicalyx lobes 6-20, filiform to linear, 1-3 mm wide |
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(2) |
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| 2 (1) |
Epicalyx lobes 10-20; leaf blade cordate or palmately lobed |
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(3) |
| + |
Epicalyx lobes 6-12; leaf blade ovate-hastate, sagittate, or palmately lobed |
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(4) |
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| 3 (2) |
Epicalyx lobes 10-20, 1-2 mm wide; petiole 4-12 cm; capsule subglobose, 3-4 cm. |
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2 A. crinitus |
| + |
Epicalyx lobes 12, 2-3 mm wide; petiole 1-4 cm; capsule ovoid-ellipsoid, 4.5-5.5 cm. |
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3 A. muliensis |
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| 4 (2) |
Pedicel 1-2 cm; capsule 10-25 cm, cylindric. |
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4 A. esculentus |
| + |
Pedicel 2-7 cm; capsule 2-6 cm, subglobose or ellipsoid |
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(5) |
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| 5 (4) |
Herbs annual or biennial, 1-2 m, indumentum mostly hispid, often without pubescence, root not swollen; epicalyx lobes incurved, enclosing fruit; corolla yellow with dark purple center, 7-12 cm wide; capsule 5-6 cm. |
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5 A. moschatus |
| + |
Herbs perennial, 0.4-1 m, indumentum mostly pubescent, setae sometimes restricted to epicalyx, root swollen, radish-shaped; epicalyx lobes spreading or reflexed; corolla uniformly red, yellow, white, or pink, 4-5 cm wide; capsule ca. 3 cm. |
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6 A. sagittifolius |
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