50 | The Philippine Journal of Science 1914 
has examined the type collection in the Delessert Herbarium at Geneva. 
Dr. Ostenfeld also considers the recently collected specimen to represent 
- a small leaved form of P. lucens Linn., and definitely states that it is not 
Potamogeton malainus Miq. (P. mucronatus Presl, non Schrad.), as Graeb- 
ner suggests. 
RUPPIA Linnaeus 
RUPPIA MARITIMA Linn. Sp. Pl. (1758) 127; Safford 365. 
Growing in brackish water, fide Safford. 
Widely distributed in all warm countries. 
HYDROCHARITACEAE 
ENHALUS Richard 
ENHALUS ACOROIDES (L. f.) Rich. ex Chatin Anat. Pl. Aquat. (1862) 15, 
t. 6. 
Stratiotes acoroides Linn. f. Suppl. (1781) 268. 
McGregor 544, G. E. S. 457. 
Widely distributed in the Indo-Malayan region in salt water. 
HALOPHILA Thouars 
HALOPHILA OVATA Gaudich. Bot. Freyc. Voy. (1826) 430, t. 40, f. 1. 
Halophila ovalis W. F. Wight ex Safford in Contr. U. S. Nat. Herb. 9 
(1905) 290, non Hook. 
Collected in Guam by Gaudichaud, and otherwise known only from Luzon. 
Ostenfeld™ considers it to be specifically distinct from the more widely 
distributed Halophila ovalis Hook. 
GRAMINEAE 
MAY DEAE 
ZEA Linnaeus 
ZEA MAYS Linn. Sp. Pl. (1753) 871; Safford 402. 
G. E. S. 108, commonly cultivated, locally known as mais. 
A native of tropical America, now cultivated in all worm countries. 
COIX Linnaeus 
COIX LACHRYMA-JOBI Linn. Sp. Pl. (1753) 972; Safford 245. 
G. E. S. 188, locally known as bilen. 
Tropics of both hemispheres, probably a native of India. 
ANDROPOGONEAE 
DIMERIA R. Brown 
DIMERIA CHLORIDIFORMIS (Gaudich.) K. Schum. & Lauterb. FI. 
Deutsch. Schutzgeb. Siidsee (1901) 165; Safford 257. 
Andropogon chloridiformis Gaudich. Bot. Freye. Voy. (1826) 412. 
Haplachne pilosissima Presl Rel. Haenk. 1 (1828) 235, t. 38. 
Dimeria pilosissima Trin. Mém. Acad. Petersb. VI 2 (1838) 336. 
G. E. S. 189, in meadows. 
A very characteristic species known only from Guam. 
* Philip. Journ. Sci. 4 (1909) Bot. 68. 
