Butters: LIAGORA AND GALAXAURA. l63 



2. Cortical filaments of cylindrical cells less freely branched than in 

 Eu-Liagora; antheridia forming large and conspicuous heads. 



Goralia J. Ag. 



Section 1. Euliagora, J. Ag. Anal, algol. 3:99. 1896. 



Liagora leprosa. J. Ac. Alg. Liebm. 8. 1847. Tilden. Amer- 

 ican Algae. Cent. V. no. 417. 1901. 



Frond dichotomously decompound, rotund-corymbose, terete, 

 flattened below on drying, covered with a mealy incrustation, with 

 obtuse, patent apices, green when young. 



On rocks at low tide. Laie Point, Koolauloa, Oahu. June 18, 

 1900. (J. E. T. 1005) ; Waianae, Oahu. May 26, 1900, (J. E. T. 

 862); Hanalei, Kauai. July 26, 1900, (J. E. T. 1221). 



The frond is small, 3-4 cm. high, .75 mm. thick at base, re- 

 peatedly dichotomous without lateral proliferations, covered with a 

 pulverulent coat of lime. The central cylinder is somewhat firm 

 and narrow throughout, composed of cylindrical filaments of two 

 sizes. The cortical branchlets arise from the larger central fila- 

 ments and are about 225 mic. long. They appear to be somewhat 

 shorter stalked than in the type of the species. They are often 

 dichotomous at the summit of the basal cell. The basal cell is long- 

 cylindrical, 8-9 X 30-40 mic, the next somewhat longer and narrow- 

 er with gradual transition upward to the almost spherical cells of 

 the corymbose head (about 9x10 mic.) which usually bear several 

 minute cells about 2 mic. in diameter. Cystocarps are abundant, 

 sub-prominent, often almost completely covering a branch. The 

 involucre is scant, resembling the vegetative cortical branchlets and 

 frecjuently, like the latter, produces small medullary filaments. 



Specimen J. E. T. 862 A. Waianae, Oahu, May 26, 1900. 

 One small plant, 2 cm. high and .5 mm. thick at base, resembling 

 the above but with the cystocarps deeply sunk among the cortical 

 branchlets, furnished with an abundant involucre of cylindrical, 

 simple or sparingly branched filaments. 



Specimen J. E. T. 1005. Laie Point, Koolauloa, Oahu. In 

 the same collection with L. leprosa. A fragment resembling Lia- 

 gora leprosa but with numerous lateral proliferations. Structure 

 similar but the cystocarps not prominent. 



Liagora pulverulenta Ag. Sp. 296. J. G. Ag. Sp. Gen. et 



