Answers are grounded in this paper and cite their sources.
W. B. CROW, M.Sc. (WALES), PH.D. (LOND.),; Crinalium, a New Genus of Cyanophyceae, and its Bearing on the Morphology of the Group, Annals of Botany, Volume os-4
No takes yet. Share an insight, caveat, or question.
W.B. CROW (1927) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: