Cytogeographical studies of Pellionia minima, P. radicans and P. scabra (Urticaceae).

Accession number;04A0287850
Title;Cytogeographical studies of Pellionia minima, P. radicans and P. scabra (Urticaceae).
Author; KANEMOTO T (Botanic Gardens Of Toyama, Toyama, Jpn)
Journal Title;Journal of Phytogeography and Taxonomy
Journal Code:Y0534A
ISSN:0388-6212
VOL.51;NO.2;PAGE.123-129(2003)
Figure&Table&Reference;FIG.3, REF.7
Pub. Country;Japan
Language;English
Abstract;Cytogeography of three species of Pellionia was described from a total of 1,436 collections from 192 localities in Japan. Di-, tri-, tetra- and pentaploid plants were found in P. minima and P. scabra, and tri-, tetra- and pentaploid plants in P. radicans. In P. minima and P. radicans, tetraploidy is common and dominant in all localities. Triploid plants were distributed in their ranges of scattering. In P. scabra, on the other hand, tri- and tetraplid plants are similaly common but they are found in separate populations. Whereas triploid plants occur in western Japan, including Shikoku and Kyushu, the tetraploid plants are mostly found in central Japan as well as Ryukyu Islands. No clear correlation between polyploidy and latitude in P. minima, P. radicans and P. scabra could be established within the study area. (author abst.)