576 University of California Puhlications in Botany [Vol. 8 



Chordaria in family characteristics is close. In case Ruprechtiella 

 filiformis (Rnpr.) Yendo (Trav. Mus, I'Acad. Imp. Sci. St. Petersb., 

 vol. 10, 1913, p. 118) proves to be identical, generically at least, with 

 Analipus fusiformis Kjellm., Analipus must be removed to the Hetero- 

 chordariaceae. 



36. Gobia Reinke 



Frond filiform, more or less lubricous, simple or branched, hollow 

 except in the very young stage, growth apical or subapical, composed 

 of an inner tissue of loosely anastomosing colorless filaments giving 

 rise to short, compact, vertical, assimilating filaments, to zoosporangia 

 and to scattered colorless hairs; gametangia unknown. 



Reinke, Algenfl. westl. Ostsee, 1889a:, p. 65. 



The type of the genus, and the only other species known except the 

 following, is Gohia haltica, based upon material of Cladosiphon 

 halticus Gobi (Brauntange finn. Meerbus., 1874, p. 12). 



The growth in length of the species of Gohia is said to be from an 

 apical cell at first, but this soon ceases and intercalary growth sets in 

 (cf. Reinke, 1889a, pp. 65, 66). If we are correct in referring the 

 Mesogloi<a simplex Saunders to Reinke 's genus Gohia, with which it 

 seems to agree in details of structure, we are probably also correct in 

 interpreting the growth of the genus as being subapical in that the 

 apical cell in very young plants and in very young branch initials very 

 early cuts off a subapical cell which takes on the principal meristematic 

 function. The same thing happens in Chordaria and presumably also 

 in Myelophycus and in Analipus. This is very different from the 

 situation in Dictyosiphan, where the terminal cell retains its meris- 

 tematic function and activity as long as active growth in length con- 

 tinues. Gohia, from this point of view, differs from the other genera 

 of the Chordariaceae in the loosely placed anastomosing filaments of 

 its inner tissues. 



Gobia simplex (Saunders) S. and G. 



Plate 42, fig. 58, and plate 786 

 Fronds olive brown, 5-12 cm. high, 2-3.5 mm. diam., simple, cylin- 

 drical or in part decidedly clavate, often arcuate, very blunt, solid in 

 the juvenile stage, soon becoming hollow except at the very base of the 

 apex, attached by a small disk ; central filaments loose, colorless, ana- 

 stomosing freely, 25-35ju, diam. ; cortical filaments straight, perpendi- 

 cular to the main axis, the terminal segments composed of 2-4 cells, 



