40 SPECIES BLANCOANAE 
Willd. is the only species of the genus that is common at low 
altitudes in central Luzon; it is very abundant in pools in and 
about Manila, August to December. 
Illustrative specimen from Manila, Luzon, November, 1914 
(Merrill: Species Blancoanae No. 180). 
Chara congesta Llanos Frag. Pl. Filip. (1851) 112; F.-Vill. & Naves in 
Blanco Fl. Filip. ed. 3, 4* (1880) 92, non Spreng.=CHARA CORAL- 
LINA Willd. 
This identification follows A. Braun, who examined Llanos’s 
specimen in the de Candolle Herbarium as reported by H. & J. 
Groves in Philip. Journ. Sci. 7 (1912) Bot. 69. It is suspected 
that a reéxamination of Llanos’s specimen will show it to be 
a form of Chara zeylanica Willd. 
PHAEOPHYCEAE 
DICTYOTACEAE 
PADINA Adanson 
Ulva umbilicalis Blanco Fl. Filip. (1837) 842; ed. 2 (1845) 581; ed. 3, 3 
(1879) 261=PADINA AUSTRALIS Hauck. 
Blanco’s description applies unmistakably to Padina, this 
genus being the only one known from the Archipelago that 
conforms at all with the characters indicated by him. 
Illustrative specimen from coral reefs, Puro, San Fernando, 
Union Province, Luzon, October 1916 (Merrill: Species Blanco- 
anae No. 994). 
ENCOELIACEAE 
HYDROCLATHRUS Bory 
Ulva reticulata Blanco Fl. Filip. (1837) 842; ed. 2 (1845) 582; ed. 3, 3 
(1879) 262, non Forsk,=HYDROCLATHRUS CANCELLATUS Bory. 
This identification has been made by Mr. F. S. Collins. The 
species is represented by my numbers 6681, 9124, 9125. 
FUCACEAE 
SARGASSUM Agardt 
Fucus denticulatus Blanco Fl. Filip. (1837) 839 (sp. nov.) Fucus natans > 
Blanco op. cit. ed. 2 (1845) 579; ed. 3, 3 (1879) 259, non Linn.= _ 
SARGASSUM sp. 
The form Blanco described is apparently the one common at 
certain seasons in Manila Bay. Its true position within the 
genus Sargassum has not yet been determined. 
Illustrative specimen from Manila Bay, Luzon, November, 1916 
Cane: Species Blancoanae No. 1029). | 
