British Charophyta Vol I - Nitelleae
Groves James & Bullock-Webster R
British Charophyta Vol I - Nitelleae - Ray Soc, London - pp 141; 23*15
I223:12.3/N20.1/B00312
British Charophyta Vol I - Nitelleae - Ray Soc, London - pp 141; 23*15
I223:12.3/N20.1/B00312