252 . SPECIES BLANCOANAE 
pines in and about towns and in the settled areas generally; it 
is certainly an introduced species in the Archipelago. 
Illustrative specimen from Manila, Luzon, December, 1913 
(Merrill: Species Blancoanae No, 361). 
MALVASTRUM A. Gray 
Malva coromandelina Linn.; Blanco FI. Filip. (1837) 551—Malva luzonica 
Blanco op. cit. ed. 2 (1845) 885 (sp. nov.); ed. 3, 2 (1879) 348, 
t. 251=MALVASTRUM COROMANDELINUM (L.) Garcke (M. tricus- 
pidatum A. Gray). 
This pantropic weed, undoubtedly of American origin, is very 
common in and about towns in the Philippines. The original 
Malva coromandelina Linn. includes the present species and 
Sida acuta, but the first reference given by Linnaeus is mani- 
festly the Malvastrum and not the Sida; see Merrill in Philip. 
Journ. Sci. 7 (1912) Bot. 240. 
Illustrative specimen from Manila, Luzon, September, 1913 
(Merrill: Species Blancoanae No. 451). 
ALTHAEA Linnaeus 
Althaea sinensis Blanco Fl. Filip. (1837) 552, non Cav.=ALTHAEA ROSEA 
Cav.; Blanco op. cit. ed. 2 (1845) 386; ed. 3, 2 (1879) 345. 
Blanco’s description applies unmistakably to the common 
hollyhock, which he first placed under Althaea sinensis Cav., 
but later referred to A. rosea Cay., its proper name. He saw 
only cultivated specimens in northern Luzon. The species is 
apparently no longer cultivated in the Philippines or, if so, then 
very rarely. 
SIDA Linnaeus 
Sida truncatula Blanco FI. Filip. (1837) 548, non J. F. Gmel.—Sida philip- 
pica Blanco op. cit. ed. 2 (1845) 383; ed. 3, 2 (1879) 340, non DC.= 
SIDA RETUSA Linn. 
This species is common and widely distributed at low and 
medium altitudes in the settled areas of the Philippines. It is 
certainly an introduced plant in the Archipelago. It was re- 
duced by Fernandez-Villar to Sida rhombifolia Linn. var. retusa 
Mast., but I consider Sida rhombifolia and S. retusa to be spe- 
cifically distinct. Sida philippica DC. is an exact synonym for 
S. rhombifolia Linn., but Blanco’s description is unmistakably 
Sida retusa Linn. 
Illustrative specimen from Antipolo, Rizal Province, Luzon, 
October, 1914 (Merrill: Species Blancoanae No. 123). 
Sida semicrenata Link; Blanco Fl, Filip. ed. 2 (1845) 884; ed. 3, 2 (1879) 
341, t. 248=SIDA RHOMBIFOLIA L. 
This species, certainly an introduced one in the Philippines, 
