177 



2. E. buxifolia, Roxb. ; Clarke in Hook. f. Fl. Brit. Ind. iv. 144. 



Bare sandy hills near the fishing village of Paksha in 

 the extreme S. of the province. Fl. white, May — August. 



3. E. acuminata, R. Br. ; Clarke 1. c. 141. West of stream 



leading from Wongneichong Gap to Deepwater Bay, 

 Hongkong ; Hoifung ; Macao ; Lienchow River ; West 

 River. Fl. white. May. 



8.— TOURNEFORTIA. 



1. T. ovata, Wall. ; Clarke 1. c. 147. Cockscomb rocks. West 

 River. Fl. white. May. 



4.- HELIOTROPIUM. 

 Key to species. 



Leaves ovate ... ... ... ... 1. indicum. 



Leaves small, linear-lanceolate ... 2. strigosum. 



1. H. indicum, Linn. ; Benth. Fl. Hongk. 235. Waste places 



near the seashore, Hongkong ; hedges near Swatow ; 

 Macao ; Pakhoi. Fl. blue, April. 



2. H. strigosum, Willd. ; Clarke in Hook. f. Fl. Brit. Ind. iv. 



151. Lantao Island, Hongkong New Territory ; Pakhoi. 

 Fl. white. Autumn. 



5.— THYROOARPUS. 



1. T. Sampsoni, Hance ; Maxim, in Mel. Biol. viii. 562. Fields 

 near Chaochaufu ; Tingushan near Chaokingfu, W. 

 River ; Lienchow River ; at the Filoitze monastery near 

 Tsingyun, N. River. Fl. blue or white, January — 

 August. 



6.— OYNOGLOSSUM. 



1. C. micranthum, Desf. ; Clarke in Hook. f. Fl. Brit. iv. 1.56. 

 Swatow ; on a rubbish heap outside the north gate. Canton. 

 Fl. white, August. 



7.— EOTHRIOSPERMUM. 



1. B. tenellum, FmcA. ; Benth. Fl. Hongk. 235. A weed in paddy 

 fields, Hongkong ; Swatow ; Canton. Fl. white or blue, 

 April. 



8.— LITHOSPERMUM. 



1. L. chinense, Hook, et Am. ; DC, Prodr. x. 80. Macao. 

 Fl. yellow^ — . 



215}0 JH 



