41 



POETULACACEAE, 



1.— PORTCJLAGA. 



1. P. oleracea, Linn. ; Benth. Fl. Hongk, 17. A common weed 

 in cultivated ground, Hongkong ; hill near Chaochautu, 

 Swatow. Fl. yellow, April. 



TAMARIXACEAE. 



1.— TAMARIX. 



1. T. chinenBis, Lour. ; DO. Prodr. iii. 96. Canton, cultivated. 

 Fl. white, June. 



ELATINACEAE. 



1.— BERGIA. 



Key to species. 



Flowers in dense verticils 

 Flowers solitary, axillary 



1. ammanioides. 



2. glandulosa. 



1. B. ammanioides, Roxb. ; DC. Prodr. i. 390. In an occupied 



field near Canton. Fl. white, September. 



2. B. glandulosa, Turcz. in Bull. Soc. Nat. Mosc. xxvii. (1854) ii. 



371. At Shuikwan (Shaochaufu), North River in dry 

 paddy fields. Fl. white, August. 



Tree 



Shrub or herb 



HYPEEICACEAB. 



Key to genera. 



2. Cratoxylon, 

 1. Hypericum. 



1.— HYPERICUM. 



Key to species. 



1. Leaves connate... 

 Leaves distinct... 



2. Shrub ... 

 Herb 



3. Styles 5 



Styles 3 



4. Leaves with numerous pellucid dots 

 Leaves with few small dots . . . 



1. Sampsoni. 



2. 



2. chinense. 



3. 



3. Ascyron, 



4. 

 5. jajjonicum. 



4. attenuatum. 



1. H. Sampsoni, Hance in Journ. Bot. 1865, 378. Lantao, Hong- 



kong New Territory ; Swatow ; Lukfo, west of Canton. 

 Fl. yellow, May. 



2. H. chinense, Linn. ; DC. Prodr. i. 545. Lienchow and North 



Rivers. Fl. yellow, July. 



