Aquatic herb 
102 
HALORAGINACEAE. 
Key to genera. 
Terrestrial plant = E SC UX Haloragis. 
2. Leaves simple ... d l. Callitriche. 
eaves pinnate : 3. Myriophyllum. 
1.-CALLITRICHE. 
Key to species. 
Leaves obong TANE l. v 
Leaves ovate 2. taghal, 
m- 
je 
m 
* 
Dd 
pd 
* 
oo = 
A 
. C. verna, Linn.; Clarke in Hook. f. Fl. Brit. Ind. ii. 434. In 
|. a marsh o 
n the bank of the Han River, Swatow ; Canton ; 
Whampoa. Fl. greenish, April. : 
C. stagnalis, Scop. ; Clarke l. c. 434. A weed in the Botanic 
Gardens, Hongkong. FL greenish, May. 
2.—HALORAGIS. 
Key to species. 
Leaves glabrous HN. wis es. l. micrantha. 
Leaves scabrous e S e. 2, tetragyna. 
H. micrantha, R. Br.; Clarke in Hook. f. Fl. Brit. Ind. ii. 
430. Hills near Canton. FI. reddish, Ma 
H. tetragyna, Hook. f.; H. scabra, Benth. Fl. Hank: 139. In 
the Happy Valley and common on grassy slopes, Hong- 
Eme: near Lowu, Hongkong New Territory. Fl. reddish, 
3.—MYRIOPHYLLUM. 
M. spieatum, Linn.; Clarke in Hook. f. Fl. Brit. Ind. ii. 433. 
Pond near Swatow. Fl. greenish, ——. 
RHIZOPHORACEAE. 
Key to genera. 
Calyx 4—6-merous 2. 
Calyx 8-14-merous UT =- 9... Carallia. 
Calyx 4- merous t ive -. A. Kandelia, 
Calyx 5-6-merous 2. Bruguiera. 
eee oor ase 
1.—KANDELIA. 
K. Rheedii, Wight et Arn.; Benth. Fl. Hongk. ne ae 
at Little Hongkong and at Taitam Tuk, kong ; 
aipo and near apio Hongkon ient it 
Fl. white, August sp E. by. 
