New Zealand Journal of Botany abstracts

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Chemotaxonomic studies in the Rubiaceae 2. Leaf flavonoids of New Zealand coprosmas*

RAYMOND D. WILSON

Chemistry Division, DSIR,
Private Bag, Petone, New Zealand

Abstract Leaf flavonoids (including 22 new compounds) are reported for 47 named and unnamed species and subspecies of Coprosma from the New Zealand region and one species from Nor- folk Island. The chemical data are compared with morphological and chromosomal data. Flavonoid glycosides are shown to be useful for the recogni- tion of species, subspecies, and hybrids. C banksii is shown to be the same as C. colensoi. The chem- ical data support a close relationship between C. baueri, C. petiolata, and C. repens. Relationship through polyploidy is suggested for four pairs of species. Leaf size exhibits no correlation with bio- chemical advancement or primitiveness.

Keywords chemotaxonomy; flavonoid glycosides; paper chromatography; chromosome numbers; polyploidy; Rubiaceae; Coprosma; New Zealand flora

Received 27 October 1983; accepted 8 November 1984
New Zealand Journal of Botany, 1984, Vol. 22: 195-200
0028-825X/84/2202-0195$2.50/0 © Crown copyright 1984

PDF file of entire paper: medium quality (414K); (scanned from paper original: notes about this process)

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