Gmlsonia annulata — W 01.1. Asron and Womersley 
57 
Fig. 2. a, Transverse section of thallus of tetrasporic plant of Gulsonia annulata Harvey showing whorl of 
four lateral short branches arising from axial cell; b, short lateral branch of Gulsonia annulata Harvey showing 
branching by two from basal cell and by three from each subsequent cell, young lateral branch, stages in devel- 
opment of tetraspores, scattered "gland” cells and terminal hairs from some cells; c, development of first lateral 
cells in young vegetative branch of Harvey; d, mature axial cell of Gulsonia annulataYiz.tnQ.y 
showing chromatophore pattern, nucleus, and small granular inclusions; e, "gland” cell of Gulsonia annulata Har- 
vey with inclusions; f, terminal spermatangia of Gulsonia annulata Harvey with median nucleus; g, fertile branch 
of Gulsonia annulata Harvey borne on basal cell of short lateral branch and bearing two carpogonial branches 
on the third axial cell and one on the fourth. 
