UMBELLIFERjE. 163 



Sub-tribe 7. Angel'icese. Fruit much dorsally compressed ; lateral ridges 

 broadly winged ; wings of opposite carpels not appressed 30. Angelica. 



Tribe V. PEUCEDA'NEiE. Fruit much dorsally compressed; lateral 

 ridges broadly winged, wings of opposite carpels appressed (face to 

 face) ; other ridges filiform. Styles short, stout. 



Wings with thin margins ; vittse as long as the fruit 31. Peucedanum. 



Wings with thin margins ; vittaa club-shaped 32. Heracleum. 



Wings with thick margins 33. Tordylium. 



Series 3. DIPLOZYG'IEiE. Umbels compound {sometimes simple in Caucalis) ; 



secondary ridges more distinct than the primary (see also 22*. Coriandrum), 



spinous in the British genera. 



Bracts pinnatifid or laciniate. Seed flat in front 34. Daucus. 



Bracts entire or 0. Seed grooved in front 35. Caucalis. 



ARTIFICIAL KEY TO THE GENERA. 



I. Leaves undivided. 



Creeping. Leaves peltate 1. Hydrocotyle. 



Erect. Leaves linear 7. Bupleurum. 



II. Leaves palmate, or simply 3-nately divided. 



Umbels subglobose. Fruit prickly. Leaves palmate 3. Sanicula. 



Umbels in dense heads. Fruit scaly. Leaves spiny 2. Eryngium. 



Umbels many-rayed. Leaves 3-foliolate ....31. Peucedanum (Imperatoria). 

 Bracts large, coloured. Leaves palmate 2*. Astrantia. 



III. Leaves simply pinnate, rarely compound at the base, 

 o. Fruit dorsally much compressed, winged. 



Border of wings very thick. Petals pink 33. Tordylium. 



Border of wings not thickened. Petals white 32. Heracleum. 



j8 Fruit not much compressed, terete or didymous. 



* Fruit spiny. Seed grooved ventrally 35. Caucalis. 



** Fruit glabrous. Seed flat or nearly so ventrally. 



f Petals entire. 



Carpophore 2-partite 10. Carum. 



Carpophore entire or 2-fid 9. Apium. 



ft Petals notched or 2-lobed. 



Ridges of fruit slender ; vittse clavate, solitary, short 11. Sison. 



Ridges of fruit prominent ; vittse several, long 15. Pimpinella. 



Ridges of fruit slender; vittae several, long 13. Sium. 



IV. Leaves 2-3-pinnate or 2-3-ternate. 



A. Fruit tarete or angled, not much dorsally compresse! or flattened. 



* Seed grooved ventrally or with involute margins. 



M 2 



