Marine Plants of Nha Trang — Dawson 
413 
Fig. 25. a-c, Acrochaetium sancti-thomae: a, A germinating spore and a young plant consisting only of prostrate 
filaments, X 425; b, a somewhat older plant in lateral view, X 280; c, a mature, erect filament with monospores, 
X 263. d, e, Acrochaetium occidentale: d, Lower part showing penetrating filaments beside an antheridial filament 
of Liagora farinosa, X lll\ e, upper part bearing monospores, X 196./, g, Acrochaetium suhseriatum: f. Upper part 
bearing monospores, X 95; g, basal part showing partially penetrating cells, X 280. h, i, Acrochaetium gracile: 
h, Upper part bearing monospores, X 183; i, basal attachment to host, X 235./^, Acrochaetium rohustum; j. Upper 
part bearing monospores, X 275; k, basal part with specialized attachment cell, X 325. /, Falkenbergia hillebrandii: 
A terminal portion of a filament, X 117. m, Dermonema frappieri: Habit of part of a clump, X 2. 
