THE A.LG M. "l BERM1 DA. ( .»1 



arc subject to much variation with age and environment, and much 

 study of living plant- is needed before we can get a clear idea of specific 

 lines. What we consider as the norma! form of the species in Bermuda 

 closely resembles No. 72 of Miss Vickers Algues de la Barbade; in 

 this some apices are acute, some rounded, on the same individual. 

 The branching seem- intermediate between D. dichotoma and D. 

 dentata, with a suggestion of lateral branching not found in the former, 

 hut not the distinctive character as in the latter. Antheridia \ 

 common in material collected at all seasons; tetraspores occurred 

 occasionally on the same individual with antheridia, in July and 

 August. No rhizoidaJ filament- were seen. Mine. Weber, 1913, 

 p. 182, state- that the type of 1). Bartayresii cannot he found; -la- 

 speak- of Harvey's figure as excellent, and we have taken it for our 

 standard. 



(i. D. divaricata Lamouroux, 1809, p. 331, not of Ktitzini:, 1859, 

 p. 10, PI. XXIII, fig. 1; D. acutihba Kiitzing, 1859, p. 13, PI. XXIX. 

 fig. 1, not of J. Ag. Inlet, Gravelly Bay, Dec., Hervey. Frond- 

 narrow as in D. linearis, but the diehotomous habit, distinct in young 

 growing branches, is quite obscured in the older part- by the abundant, 

 mostly short, proliferous branches. By these the fronds are often 

 so densely matted that it is not easy to disentangle any individual 

 plant. Antheridia are abundant in this material, hut no other form 

 of fruit wa- observed. The fronds seem to attach themselves by inter- 

 laced proliferous branches, with a few short, mono-iphonous rhizoidaJ 

 filaments close to the tip. 



7. I). ciliata J. G. Agardh, 12 1841, p. 5; Harvey, 1852, p. 110, 

 PI. VIII. A.; D. crenvlata P. B.-A., No. 1875, an .1. A.. ?. Rein; 

 Kemp, May, June; South Shore near Paget, Feb., Castle Harbor, 

 Pel)., Farlow; Gravelly Bay, Jan., Feb., Harris Bay, Dec. Hervey; 

 Causeway, April, Shelly Bay, May, Hungry Bay, July. Collins. 

 There is considerable variation in the material which we now include 

 under 1). ciliata, but after a re-examination of the form that we dis- 

 tributed as P. crenidata, we do 'not feel justified in keeping it distinct 

 It seems to us also that D. crenvlata from Barbados, Vickers, No. 75, 



12 The first use of the combination Dictyota ciliata \< by Lamouroux, L809, 

 j). 331, where a synonym i- given, F OUTOUX, I "-« '•"). 



p. 41; a description i- given of the Latter and figure, PI. XXX, fig 2; the 

 locality l- the Mediterranean. It i- now generally acknowledged to be 

 Taonia aiomaria (Good. & Wbodw.) .1. Ag. B< me proposed for a 



plant recognized by Lamouroux a-. already named, Dictyota ciliata Lamouroux 

 never had any standing, and cannot interfere with the subsequent />. ciliata 



