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62. Melissa Linnaeus, Sp. Pl. 2: 592. 1753.
蜜蜂花属 mi feng hua shu
Herbs perennial. Leaves petiolate, ovate, margin serrate. Verticillasters axillary; bracts leaflike, smaller than leaves; bracteoles minute. Calyx campanulate, pendulous after anthesis, 13-veined, ± hairy, 2-lipped, upper lip shallowly 3-toothed, lower lip strongly 2-toothed. Corolla white, yellow-white, yellow, or reddish, 2-lipped; tube included or slightly exserted, slightly dilated at throat; upper lip straight, apex emarginate or 2-lobed; lower lip spreading, 3-lobed, with middle lobe entire or emarginate, wider than lateral lobes. Stamens 4, anterior 2 longer, clinging to upper corolla lip, included or slightly exserted; filaments arcuate; anther cells 2, initially divergent at nearly a right angle, becoming divaricate. Style apex equally 2-cleft; lobes subulate, revolute. Nutlets ovoid, smooth.
About four species: Asia, Europe; three indigenous and one cultivated in China.
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| 1 |
Calyx with subequal lips |
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1 Melissa axillaris |
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Calyx with lower lip longer. |
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(2) |
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| 2 (1) |
Calyx blue-purple, inside glabrous |
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2 Melissa flava |
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Calyx greenish, inside hairy at least on upper lip inside. |
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(3) |
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| 3 (2) |
Corolla yellow-white; inside of calyx villous only on upper lip, upper lip 3-toothed, acute, lateral teeth close to middle tooth |
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3 Melissa yunnanensis |
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Corolla cream-white; inside of calyx apex villous, upper lip short 3-denticulate or ± undulate, teeth straight, evenly spaced |
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4 Melissa officinalis |
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Lower Taxa
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