Metanarthecium Research Articles

경기도 칠보산의 식물상

Mt. Chilbo is 238.8m high and located throughout Sangrok-gu, Ansan-si and Gwonseon-gu, Suwon-si and Maesong-myeon, Hwaseong-si. The investigated vascular plants in this area consist of total 537 taxa: 22 forms, 85 varieties, 4 subspecies and 426 species, 339 genera, 116 families, 41 orders, 4 classes and 3 phyla. It is not found the first grade endangered species of wild flora of the ministry of environment. But two species of the second grade endangered species are investigated in this study, those are Haeorabinancho(<italic>Habenaria radiata</italic> Spreng.) and Chilbochima(<italic>Metanarthecium luteoviride</italic> Maxim.) which is thought to be planted for restoration, There are 4 taxa of insectivorous plants, those are <italic>Drosera rotundifolia</italic> L., <italic>Utricularia bifida</italic> L., <italic>Utricularia racemosa</italic> Wall and <italic>Utricularia vulgaris</italic> var. <italic>japonica</italic> Tamura. And also there are 51 taxa of wetland plants involving <italic>Nymphoides peltata</italic> Kuntze. It is demanded to restore private rice paddies and arable fields for purchasing them by the province. Also Chilbochima restoration project should be accompanied carefully.

Life cycle separates Puccinia pachycephala from P. metanarthecii

Puccinia metanarthecii and P. pachycephala differed in their heteroecious life cycle. The former rust fungus formed spermogonial/aecial stages on Ixeris dentata and uredinial/telial stages on Metanarthecium luteo-viride or Aletris foliata. The latter formed spermogonial/aecial stages on Ligularia hodgsonii and uredinial/telial stages on Veratrum maackii var. longibracteatum and V. maackii var. parviflorum. Puccinia pachycephala and P. metanarthecii can also be differentiated by aeciospore and teliospore morphology.

Studies on the Steroidal Components of Domestic Plants. XXX. Structure of Nogiragenin, a 'New Sapogenin isolated from Metanarthecium luteo-viride MAXIM.

A new 11-oxygenated sapogenin, nogiragenin, was isolated from Metanarthecium luteo-viride MAXIM. and the structure 5β, 25D-spirostane-3β, 11α-diol was assigned to it by its synthesis from metagenin via 2β, 3β-epoxide.

Studies on the Steroidal Components of Domestic Plants. XXXV. Structure of Meteogenin. (1).

The structure of meteogenin, isolated from the rhizome of Metanarthecium luteoviride MAXIM., was shown to be 1-methyl-19-nor-25D-spirosta-1, 3, 5 (10)-trien-11α-ol (IIa). The relationship between luvigenin (I) and meteogenin (IIa) was established, and at the same time it was proved that the direction of the dienol-benzene rearrangement varied according to the presence of the double bond at C6 or of the C11-ketone.