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7. Corydalis sect. Duplotuber Ryberg, Acta Hort. Berg. 19: 223. 1960.
叠生延胡索组 die sheng yan hu suo zu
Corydalis sect. Ceratotuber Popov ex Z. Y. Su & C. Y. Wu.
Tuber small, from inflated stem base, often with leaf traces externally; new tubers formed directly on old tuber, on tip of tuber elongation, or axillary. Stems 1 to several, with 2 or more cauline leaves; lower part with scales or not. Leaves ternate to biternate. Bracts green, rather small, entire or dentate. Spur straight or slightly curved, shorter than limb; nectary short, apex pointed. Stigma horizontal, oblong, with 4 papillae. Capsule linear. Seeds 1-ranked, keeled, papillose.
Three species: a typical Sino-Japanese floristic element, two species in NE China, Korea, and SE Russia, one species in E China and Japan.
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| 1 |
Leaflets serrate; lower part of stem with axillary tubers. |
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39 C. ternata |
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Leaflets entire; stem without axillary tubers |
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(2) |
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| 2 (1) |
Stems decumbent, simple; tubers rounded; racemes lax; scale leaves absent. |
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40 C. decumbens |
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Stems erect, sometimes branched; tubers long and narrow, inflated at ends; racemes dense; scale leaves 1-3 at base of stems. |
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41 C. buschii |
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Lower Taxa
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