116 



3. Peduncles clustered at top of stem, 



shorter than the petioles 3. javanica. 



Peduncles scattered, often 3 times as 



long as the petioles ... ... 4. 



4. Pedicels very short 4. Wilfordi. 



Pedicels longer than fruit ... ... 5. burmanica. 



1. H. asiatica, Linn.; Benth. Fl. Hongk. 134. Very common in 



damp situations, Hongkong ; Swatow ; Canton ; Pakhoi. 

 Fl. white, May. 



2. H. rotundifolia, Roxb. ; Benth. 1. c. 134. A common weed in 



Hongkong ; at Yit-hai and Chaochaufu, Swatow ; 

 Whampoa ; Pakhoi. Fl. white, April-June. 



3. H. javanica, Thunb. ; Clarke in Hook. f. Fl. Brit. Ind. ii. 667. 



Lienchow B-iver ; Lofoushan. Fl. white, July. 



4. H. Wilfordi, Maxim, in Mel. Biol. xii. 463. In swampy 



ground at East Point, Hongkong ; Shingmun Pass, 

 Hongkong New Territory. Fl. white. May. 



5. H. burmanica, Kurz ; Clarke ia Hook. f. Fl. Brit. Ind. ii. 668. 



Lofoushan at 3100 ft. Fl. white, August. 



S.— ERYNGIUM. 



1. E. foetidum, Linn. ; DC. Prodr. It. 94. Waste places about 

 villages on the banks of the Han Eiv^er, Swatow. Fl. 

 white, April. 



3.— SANICULA. 



Key to species. 



Fruit winged with lamellae 1. lamelligera. 



Fruit wingless 2. orthacantha. 



1. S. lamelligera, Hance in Journ. Bot. 1878, 11. North River ; 



North-west River. Fl. white, July. 



2. S. orthacantha, S. Moore in Journ. Bot. 1875, 227. Streams 



on the Phoenix Mt., Swatow. Fl. blue, April. 



4.— BUPLEURUM. 



1. B. falcatum, Linn. ; Clarke in Hook. f. Fl. Brit. Ind. ii. 676. 

 Lienchow River. Fl. yellow, August. 



5.— APIUM. 



Key to species. 



Leaf segments filiform I. leptophyllum. 



Leaf segments flat 2. graveolens. 



1. A. leptophyllum, F. Muell. ; Hehsciadium leptophylhm, DC. 



Prodr. IV. 105. A common weed by the roadsides on 

 Victoria Peak, Hongkong. Fl. white. May. 



2. A. graveolens, Linn. ; Clarke in Hock. f. Fl. Brit. Ind. ii. 679. 



In fields near Chaochaufu. Fl. white, April. 



