Reference

Ib Linde-Laursen, Claus Baden (1994): Comparison of the Giemsa C-banded karyotypes of the three subspecies of Psathyrostachys fragilis, subspp. villosus (2x), secaliformis (2x, 4x), and fragilis (2x) (Poaceae), with notes on chromosome pairing – Österreichische Botanische Zeitschrift = Plant Systematics and Evolution – 191 : 183 - 198.