190 



3. Pedicel longer than calyx ... ... 3. spicata. 



Pedicel shorter than calyx ... ... 4. spuria. 



1. V. serpyllifolia, Linn. ; Hook. f. Fl. Brit. Ind. iv. 296. Near 



Swatow. Fl. white or lilac, April. 



2. V. Anagallis, Linn. ; DC. Prodr. x. 467. Wongnnichong and 



East Point in cultivated ground, Hongkong ; Swatow ; 

 abundant in vegetable grounds west of the city, Canton. 

 Fl. blue or pink, February. 



3. V. spicata, Linn. : DC. 1. c. 466. Lofoushan. Fl. blue, 



August. 



4. V. spuria, Linn. ; V. paniculata, Benth. ; DC. 1. c. 465. 



Grassy slopes, Kwangtung in various localities. Fl. blue, 

 July — September. 



19.— BUCHNERA. 



1. B. cruciata, Ham. ; Benth. Fl. Hongk. 253. At Pokfulam 

 and Little Hongkong, Hongkong ; Sheungshui, Kuntong 

 and Hahang, Hongkong New Territory ; Lanfa Mt., 

 Hoifung ; White Cloud hUls, Canton ; Pakhoi. Fl. 

 bluish-purple, September. 



20.— STRIGA. 



Key to species. 



Calyx 10-ribbed ... ... ... 1. lutea. 



Calyx 15-ribbed ... ... ... 2. Masuria. 



1. S. lutea, Lour. ; S. hirsuta, Benth. Fl. Hongk. 254. Common 



in grassy places, Hongkong ; Pakhoi. Fl. yellow, July. 



2. S. Masuria, Benth. Fl. Hongk. 254. Near Deepwater Bay, 



very rare, Hongkong ; Kwangtung without locality. 

 Fl. . 



2 1 .— OENTRANTHER A. 

 Key to species. 



1. Strong erect herb ... ... ... 2. 



DiiFuse plant, under 6 inches high ... 1. humifusa. 



2. Flowers yellow 2. Brunoniana. 



Flowers purple 3. hispida. 



1. C. humifusa, Wall. ; Hook. f. Fl. Brit. Ind. iv. 301. Hoifung ; 



White Cloud hills. Canton. Fl. yellow. October. 



2. C. Brunoniana, fVall. ; DC. Prodr. x. 525. Hongkong without 



locality ; Lofoushan. Fl. yeUow, August. 



3. C. Mspida, R. Br. ; DC. 1. c. 525. In vaUey east of Wanchai 



Gap, Hongkong. Fl. purple, September. 



22.— SOPUBIA. 



1. S. trifida. Ham. ; Hook. f. Fl. Brit. Ind. iv. 302, North 

 Eiver, Fl. yellow to purple, November, 



