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A palynotaxonomic study of the korean campanulaceae



A palynotaxonomic study of the korean campanulaceae



Korean Journal of Plant Taxonomy 18(2): 115-132



In addition to Lee et al. (1986), pollen grains from 7 genera, 18 species, and 4 forms of the Korean Campanulaceae were described and their relationship was investigated. Species of the subfamily Lobelioideae, Lobellia chinensis and L. sessilifolia, having tricolporate aperture, subprolate to prolate-spheroidal grain, and foveolate-fossulate surface were well separated from the following species of the subfamily Campanuloideae. Colpus number of Codonopsis was variable, i.e., 6-7 in' C. pilosula, (8)-9-(10) in C. ussuriensis, and 9-10 in C. lanceolata and their surface patterns were distinguishable as well. Three forms of Platycodon grandiflorum having 5-6-colporate aperture, were keyed out on the basis of grain size and surface pattern. Among the genera having 3-7-porate aperture, Peracarpa carnosa var. circaeoides and Adenophora species possessed erect-tipped rugulae but were separated from one another by having different echina number, ca. 45 and 7-15, respectively, while others possessed flat-tipped rugulae. Among them, Wahlenbergia marginata having about 40 echinae 100 .mu.m2 was distinguished from the rest having less than 25 echinae, and the latter was separated into Phyteuma japonicum with round-topped and less-connected rugulae and Hanabusaya and Campanula species with flat-topped and well-connected ones. Since pore number was 4-7 in Hanabusaya whereas 3(4) in Campanula, and the surface pattern was bigger in dimension in the former than in the latter, the position of Hanabusaya as an endemic genus was well confirmed. On the contrary to Hanabusaya, Campanula species were well keyed out on the basis of surface pattern.

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Accession: 004606451

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