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346 MERRILL AND MERRITT. 
POLYGONACEZ. 
POLYGONUM Linn. 
1. P. chinense Linn. Sp. Pl. (1753) 363. 
In stream depressions, on open pine-covered slopes, and in the mossy forest, 
altitude 1,500 to 2,400 m, C. M. Z, 16053 (infested with Ustilago treubii Solms), 
16054, 16056, McGregor 8840. 
Widely distributed in the Philippines at medium and higher altitudes; India 
to China, Japan, and Malaya. 
2. P. posumbu Ham. in Don Prodr. (1825) 71. 
In the upper pine region, Merrill 6575 
Known in the Philippines only from the Benguet-Lepanto region; India to 
China, Japan, and Java. 
3. P. punctatum Ham. 1. ec. 72. 
On steep, grass-covered slopes in the upper pine region, 2,000 m altitude 
C. M. Z. 16055. 
Known in the Philippines only from the Benguet-Lepanto region; mountains 
of India, Ceylon, China, Japan, and Java. 
CHENOPODIACEZ. 
CHENOPODIUM Linn. 
1. C. ambrosioides Linn. Sp. Pl. (1753) 219. 
Slopes in the pine region, altitude 1,600 m, C. M. Z. 16037. 
Widely distributed in the Philippines at low and medium altitudes, probably 
introduced; tropical and temperate regions of the world. 
AMARANTHACEE. 
AMARANTHUS Linn. 
1. A. spinosus Linn. Sp. Pl. (1753) 991. 
Altitude not stated, 0. M. Z. 16237. 
Widely distributed in the Philippines, especially abanant 4 in gravelly stream 
beds during the dry season; Tropics of the world. 
CARYOPHYLLACEZ. 
ARENARIA Linn. 
1. A. serpyllifolia Linn. Sp. Pl. (1753) 423. 
Upper pine slopes, a weed in sweet-potato patches, O. M. Z. 16077. 
Temperate and subtemperate regions of the world; known in the Philippines 
only from high altitudes in the Benguet-Lepanto region. 
DRYMARIA Willd. 
1. D. cordata Willd. ex Roem. & Schult. Syst. 5 (1819) 406. 
Weed in sweet-potato patches, altitude 1,300 m, OC. M. Z. 16061. 
Widely distributed in the Philippines at low and medium altitudes, probably 
introduced from tropical America; now distributed throughout the Tropics of the — 
world. 
