CYPERACEAE 79 
and which Llanos otherwise described as Cyperus ovatus. The 
description and habitat is better that of Cyperus radiatus Vahl, a 
species very common and widely distributed in the settled areas 
of the Philippines. 
Illustrative specimen from Manila, Luzon, November, 1914 
(Merrill: Species Blancoanae No. 429). 
Cyperus nuttallii Llanos Frag. Pl. Filip. (1851) 14; F.-Vill. & Naves in 
Blanco Fl. Filip. ed. 3, 4% (1880) 9, non Torr.=CYPERUS IRIA 
Linn. 
Llanos’s conception of Cyperus nuttallii was reduced by Naves 
to Cyperus flavicomus Michx., a North American species. The 
description applies closely to the very common Cyperus iria Linn., 
which is a characteristic weed in rice paddies, low wet lands, 
etc., throughout the Philippines. 
Illustrative specimen from Manila, Luzon, N ovember, 1914 
(Merrill: Species Blancoanae No. 174). 
Cyperus humilis Llanos Frag. Pl. Filip. (1851) 13 (sp. nov.); F.-Vill. & 
Naves in Blanco FI. Filip. ed. 3, 4% (1880) 7, non Kunth=CYPERUS 
COMPRESSUS Linn. 
This was definitely indicated by Llanos as a new species, but 
is not included in Index Kewensis. The description manifestly 
applies to the common and widely distributed Cyperus compres- 
sus Linn., a species that is abundant throughout the settled areas 
of the Philippines at low and medium altitudes. 
Illustrative specimen from Manila, Luzon, November, 1914 
(Merrill: Species Blancoanae No. 203). 
_7®YPERUS ROTUNDUS Linn.; Blanco Fl. Filip. (1837) 31; ed. 2 (1845) 
21; ed. 3, 1 (1877) 40. 
cyeeri curvatus Llanos Frag. Pl. Filip. (1851) 15; F.-Vill. & Naves in 
Blanco Fl. Filip. ed. 3, 4* (1880) 9, non Vahl=CYPERUS ROTUN- 
DUS Linn. 
Blanco certainly described a form of the Linnean species, 
probably var. nilagiricus (Hochst.) C. B. Clarke. In this reduc- 
tion of Llanos’s species I follow F.-Villar, for I can see no reason, 
from Llanos’s description, to consider Cyperus curvatus Llanos 
other than this very common form. Cyperus rotundus is abun- 
dant in all parts of the Philippines in the settled areas. 
Illustrative specimens from Manila, Luzon, January, 1915 
(Merrill: Species Blancoanae No. 580); Taytay, i so May, 
1918 (Merrill: Species Blancoanae No. 790). 
Cyperus caespitosus Llanos Frag. Pl. Philip. tie) 14 Sosailiesds) 
_ F.-Vill. & Naves in Blanco FI. wnat ed. 3, 47 (1880) 8, non Poir. san 
|; CYPERUS HASPAN Linn. 
Llanos did not intend this as a new species, but thought that 
