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6. Acer sect. Arguta Rehder in Sargent, Trees & Shrubs. 1: 181. 1905.
尖齿枫组 jian chi feng zu
Shrubs multi-stemmed, 6-15 m tall, dioecious. Bark slightly white striped. Buds valvate, with 2 or 3 pairs of bud scales. Leaves simple, 3- or 5-lobed or undivided, margin serrate. Staminate inflorescence racemose, axillary from leafless buds; pistillate inflorescence racemose, terminal and axillary from mixed buds. Flowers dioecious, 4-merous. Stamens 4(-6), mostly absent in pistillate flowers. Disk intrastaminal. Ovary very rudimentary in staminate flowers. Nutlets rugose and strongly veined.
Four species: China, Himalayas, Japan; three species in China.
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| 1 |
Leaf blade 3- or 5-lobed, lateral lobes usually as long as central lobe, apex of lateral lobes caudate-acuminate. |
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75 A. acuminatum |
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Leaf blade unlobed or 3- or 5-lobed, lateral lobes much shorter than central lobes |
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(2) |
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| 2 (1) |
Leaf blade 5-lobed. |
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76 A. barbinerve |
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Leaf blade unlobed, or rarely 3-lobed. |
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77 A. stachyophyllum |
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Lower Taxa
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