180 330 
Klong Prao, on rocks in the jungle; Koh Kong on sandy ground near 
the Sea. 
Area: It grows in Behar and Choto-Nagpore and on the Malayan Penin- 
sula; in the Greater Sunda-Island it has yet been found. 
4, 0. (Dimetra) mollis Wall. in Don, Gen. Syst. Ill, 527; Hook. f. 
Fl. Brit. Ind. III, 59. 
Open, dry plains near Lem Dan (n. 30). 
Till now it has not been found but in the Southern part of the Malayan 
Peninsula, on the island of Penang. 
5. 0. (Zuhedyotis) costata (Roxb.) K. Schum. 
Spermacoce costata Roxb. Hort. beng. 10. — H. vestita Wall. in Don, 
Gen. Syst. I, 526; Hook. f. Fl. Brit. Ind. III, 58. 
Riverbank in the jungle near Klong Munsé; a shrub (n. 412). 
According to the rules of priority of specific names now accepted by 
the greater part of living botanists, excepted the English, it is not to be avoided 
to change the name. It is distributed from the subtropical Eastern Himalaya 
and the Khasia Mountains in the Malayan Peninsula, the Malayan Archipelago 
and the Philippines. 
6. 0. (Euhedyotis) lineata Roxb. Hort. beng. 10; Hook. f. Fl. Brit. 
Ind. Wl, 59. 
Jungle near Klong Munsé; Klong Son in a pool (n.119, 654a). 
Area: The geographic area is not so far extended as in the last species; 
from Eastern Bengal it has been found till now only as far as to Chittagong 
and Tenasserim. 
Note. There is collected (sub n. 742) another plant which probably belongs 
to the same genus, but it is too imperfect for determination. 
7. Argostemma Wall. 
1 found in the collection a very dwarfy plant (n. 502) of the habit 
of this genus with a whorl of 4 unequal leaves on a 1,5 cm. high stem. 
The flowers are unfortunately very young, and it is therefore impossible 
to match it. 
Ophiorrhiza Linn. 
8. O.mungos L. Spec. pl. ed. I, 150. 
Klong Son, on moist ground in the jungle (n. 631 partim). 
Area: The plant is common in the eastern parts of tropical Asia and 
goes from the Khasia Mountains to New Guinea. 
9. 0. Marrisiana Heyne in Wall. and Arn. Prodr. 405; Hook. f. Fi. 
Brit. Ind. ll, 78. 
Klong Majum, alt. 700 ft., on rocks in the un le (n. 606). 
