• Korean Journal of Plant Taxonomy
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• v.36 no.2
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• pp.137-144
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• 2006

A new species of Corydalis sect. Corydalis (Fumariaceae), C. misandra B.U.Oh, is described from the provinces of Gyonggi-do and Gangwon-do in Korea. The new species is distinct from its close relative C. namdoensis in having elliptic or linear leaflet shape, entire or slightly dentate bract apex, broad and rhomboidal lower outer petal, 14 papillate stigma, oblong stamen and linear capsule with one rowed seeds, etc.

• Korean Journal of Plant Taxonomy
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• v.34 no.3
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• pp.265-271
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• 2004

A new species of Corydalis sect. Corydalis (Fumariaceae), C. namdoensis B.U. Oh et J.G. Kim, is described from the central and southern part of Korea. The new species is distinct from its close relative C. albipetala in having very variable leaf shapes, broadly flattened fusiform fruits, seed arrangement nearly in two rows in capsule, V-shaped inner petal apex and limited distribution area.

• Korean Journal of Plant Taxonomy
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• v.37 no.3
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• pp.217-224
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• 2007

A new species of Corydalis sect. Corydalis (Fumariaceae), Corydalis cornupetala Y.H. Kim et J.H. Jeong is described from Gyeongsan-si, Gyeongsangbuk-do in Korea. This new species is distinguished from the other species of the sect. Corydalis by some flower characters such as, purplish white petal with two dark stripes and horn-shaped apex of outer petal. The linear leaflets of C. cornupetala are similar to the lineariloba type of C. remota Fisch. ex Max. or C. namdoensis B.U. Oh et J.G. Kim, but much longer and narrower. The linear or lanceolate bract of C. cornupetala is also distinctive from the elliptical shape of C. remota and C. namdoensis.

• Korean Journal of Plant Taxonomy
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• v.38 no.4
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• pp.531-537
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• 2008

We report an unrecorded species of Corydalis sect. Corydalis (Fumariaceae), C. caudata (Lam.) Pers., that have been found in the central part of Korea. This species is easily recognized by its bearded calyx, upwardly curved spur, and multi-branched characteristics. We named it 'Soo-yeom-hyeon-ho-saek' as korean common name.

• Korean Journal of Plant Taxonomy
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• v.40 no.2
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• pp.79-83
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• 2010

A new species of Corydalis L. (Fumariaceae), C. alata was discovered in Pohang-si, Gyeongsangbuk-do in Korea and is described and illustrated here. The newly described species C. alata is distinct from the closely-related species C. maculata by having tubers with whitish inner surface, sagittate base of the lower outer petals, and smaller seeds.

• The Korean Journal of Ecology
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• v.26 no.4
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• pp.173-180
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• 2003

To clarify whether the closely related species living in the same area is a population or populations ecologically, leaf morphology, specific leaf area, and fruit and seed production were studied in the natural group of sect. Pes-gallinaceua of Corydalis of Namhansansung area from 1999 to 2000. There were 352 plants in one square meter and total eight species or varieties were identified. Of the 352 plants, the number of C. turtschaninovii was the most with 103(29.3%), and that of C. ambigua was the next with 78(22.2%), and that of C. turtschaninovii var. fumariaefolia was the smallest with 9(2.6%). In the 28 plants having spotted leaves, central leaflet did not parted or again parted. The extent of partition with the plant was various from non-parted type to perfectly two-parted type (three leaflet). Between two extreme types, there were diverse types so that this character formed a gradient. The rate of length/breadth was in the range of 0.79~2.17. This character was related to the extent of leaflet partition but did not well expressed the distinguishing trait along a species. The number and the type of serration were diverse and there was no sharp borderline among the species or varieties. Ecological properties, specific leaf area, the number of fruit per plant, and the number of seed per fruit, varied with a wide range in a species or variety but differences between species or variety were not significant. Therefore, the Corydalis group studied was regarded as a population on the three criteria: (1) possibility of interbreeding, (2) continuity of leaf morphology, (3) irrelevance between character and species, (4) similarity of several ecological properties.

• The Korean Journal of Ecology
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• v.26 no.4
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• pp.181-188
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• 2003

Frequencies of each size class, annual change of tuber state and above ground/belowground rate in sect. Pes-gallinaceua group of Corydalis (Fumariaceae) were studied to clarify spring ephemeral´s growth characteristics from 1999 to 2000 in Namhansansung area. Shoot grew from the tuber corresponding with soil thawing in the early growth season, and the deeper tuber was located in soil, the later shoot germinated. Shoot appeared in middle March and died early in May, and the period of total growth season was 45 days. Frequencies were 40% (in total dry weight) or 53% (in tuber´ dry weight) in the smallest size class, and 93% (in total dry weight) or 96% (in tuber´ dry weight) below medium size, therefore, almost all of plants were small. Specific gravity of tuber (SGT) gradually decreased from late growth season to the time that leaf unfolded in next year. At this time, the value of SGT was 0.14. Thereafter, SGT increased to 0.42 at withering time of aboveground part. During growth season, the SGT of flowering plants was lower than that of non-flowering plants. And SGT difference between flowering plants and non-flowering plants was significant at 1% level. In the late growth season, SGT decreased along the increase of tuber volume. The tuber volume roughly increased along the leaf area but there was no a conspicuous trend. Shoot/tuber rate had nothing to do with tuber volume. SGT decreased and leaf area increased along the tuber dry weight, and tendencies of increase or decrease were conspicuous. Therefore, the smaller the plants were, the larger organic matter accumulated in tuber during a growth season. Shoot/tuber rates were various along each plant.