213 



2. P. major, Linn. ; Benth. Fl. Hongk. 280. Common in waste 

 places, Hongkong ; Swatow ; Kwaisin, Hoifung. Fl. 

 green, September. 



NYCTAGINACEAE. 



1.— BOERHAAVIA. 



1. B. repens, Linn. ; Hook. f. Fl. Brit. Ind. iv. 709. Hongkong 

 without locality ; Lantao Island, Hongkong New Terri- 



tory ; abundant on the city 

 red, June. 



I'alls, Canton ; Pakhoi. Fl. 



AMARANTACEAE. 



Key to genera. 



1. Leaves alternate ... ... ... 2. 



Leaves opposite ... ... ... 3. 



2. Larger leaves less than twice the length 



of the petiole ... ... ... 3. Amarantus. 



Leaves all more than twice the length 



of the petiole ... ... ... 4. 



3. Flowers abruptly deflexed, with spiny 



bracteoles ... ... ... ... 6. Achyrantlies. 



Flowers not deflexed ... ... ... 6. 



4. Spikes cylindric or over \ inch thick... 5. 

 Spikes globose ... ... ... ... 2. Allmania. 



5. Spikes over ^ inch thick, glabrous ... I. Celosia. 

 Spikes J inch thick, woolly ... ... 5. Aerua. 



6. Flowers in sessile clusters ... ... 7. Alterna^ithera. 



Flowers in racemose spikes ... ... 4. Cyathula. 



1.— OELOSIA. 



1. C. argentea, Linn. ; Benth. Fl. Hongk. 284. At Stanley in 

 waste places, Hongkong ; Kowloon, Hongkong New Terri- 

 tory ; Hoifung ; Lienchow River. Fl. white, November. 



2.— ALLMANIA. 



L A. nodiflora, R. Br. ; Hook. f. Fl. Brit. Ind. iv. 716. Pakhoi. 

 Fl. white, . 



3.— AMARANTUS. 

 Key to species. 



1. Sepals 2 or 3 



Sepals 5... 



2. Bracts equal to sepals or longer 

 Bracts mostly shorter than sepals 



3. Sepals ovate-oblong 

 Sepals linear-lanceolate 



1. spinosus. 



2. 



2. mangostanus. 



3. 



3. viridis. 



4. Blitum. 



