Reference

Wilfried Morawetz (1984): How Stable are Genomes of Tropical Woody Plants? Heterozygosity in C-banded Karyotypes of Porcelia as Compared With Annona (Annonaceae) and Drimys (Winteraceae) – Österreichische Botanische Zeitschrift = Plant Systematics and Evolution – 145: 29 - 39.