Karyological Derivation of Sciadopitys verticillata Sieb. et Zucc. from a Pro-Taxodiaceous Ancestor
- 1 June 1985
- journal article
- research article
- Published by University of Chicago Press in Botanical Gazette
- Vol. 146 (2) , 264-267
- https://doi.org/10.1086/337523
Abstract
The lower chromosome number of Sciadopitys verticillata, 2n = 2x = 20, and the distinctive SAT-chromosomes cytotaxonomically separate this genus from the Taxodiaceae (x = 11). Paleobotanical and morphological information also indicates distinction of Sciadopitys. Karyological derivation of a 2n = 2x = 20 prototype of Sciadopitys from a 2n = 2x = 22 pro-taxodiaceous ancestor has been hypothesized. Different lines of evidence of divergence of Sciadopitys from the modern Taxodiaceae indicate separation of this species into a monotypic family Sciadopityaceae Hayata.This publication has 1 reference indexed in Scilit:
- Differential reactivity to staining in tree chromosomesJournal of Heredity, 1981