Hydrocotyle.'] UMBELLIFERAE. 555 



Fruit widest at the commissure, circular or somewhat dorsally 

 compressed in section ; primary ridges distinct : 



Frait globose, the ridges prominent ; petals white 7. Seseli. 



Fruit ovoid : 



Flowers yellow ; leaves large with filiform segments 



Foeniculum. 

 Flowers white ; leaves small ; vittae many : 



Bracts prominent 8. Schultzia. 



Bracts none or small 9. Polyzygus. 



Fruit dorsally compressed, the mericarps flattened, the lateral 

 ridges winged : 



Wings of the mericarps with thick margins ; vittae on the faces 

 of the mericarps usually extending to the base ; petals not 



radiant 10. Peucedanum. 



Wings of the mericarps with thin margins ; vittae usually not 

 extending to the base ; petals very often radiant 



11. Heracleum. 



Fruit subterete, not winged; secondary ridges of the mericarps 

 prominent ; petals radiant : 



Fruits glabrous ; involucral bracts none Cor iandr urn . 



Fruits setose ; involucral bracts prominent, pinnate Daucus. 



1; Hydrocotyle, Linn. 



Prostrate herbs, rooting at the nodes, growing in moist places. 

 Leaves orbicular or reniform, palmately lobed, long-petioled ; 

 stipules scarious. Flowers white, small, in simple small axillary 

 sessile or pedicellate umbels ; involucral bracts small or 0. 

 Ccdyx-teeih none or very small. Petals entire, acute, valvate. 

 Fruit laterally compressed, small ; mericarps with 3 primary but 

 without secondary ridges ; vittae 0. 



Leaves 1-3*5 in. in diam., 7-9-lobed ; umbel-peduncles clustered, up 

 to 2 in. long ; mericarps very little compressed, the primary ridges 



obscure 1. javanica. 



Leaves 1-2 in. in diam., 7-9-lobed ; umbels solitary, sessile or very 

 shortly peduncled ; mericarps slightly compressed, the primary ridges 



apparent 2. conferta. 



Leaves 'l-'5 in. in diam., 7-lobed ; umbel peduncles solitary, very 

 slender, up to '75 in. long ; mericarps compressed, the primary ridges 

 angular 3 . rotundifolia. 



