Template:Flora URSS 18
- Komarov, V.L.†, Schischkin, B.K. & Bobrov, E.G. (eds.) 1952. Flora URSS (Flora Unionis Rerumpublicarum Sovieticarum Socialisticarum) XVIII. Metachlamydeae. [in Russian]. Academia Scientiarum URSS, Mosqua, Leningrad. DJVU. English translation: 632 pp. BHL