194 UMBELLfFERiE 



of the latter, which is fragrant and sweet when first tasted, but 

 leaves glowing heat in the mouth, is valued by the Lapps both 

 as food and as medicine. Several species produce underground 

 tubers, which, under the name oi pig-nuts or earth-7iuts^ are eaten 

 by children and pigs. 



Tribe i. Hydrocoiylece. — Umbel simple : frtiit much compressed 

 laterally : co7)imissii?'e narroiv : no carpopho?'e or vittce 



1. Hydrocotyle. — Creeping; /(?az^<?i- simple, peltate. 



Tribe 2. Saniculece. — Umbel simple^ capitate or ir?'egidarly com- 

 pou?id : fruit slightly dorsally compressed : co7?imissure broad : no 

 ca) pop ho re. 



2. Eryngium. — Leaves spinous ; u?nbels in dense heads ; /;-//// 

 scaly, without ridges or vittae. 



^3. Astrantia. — Leaves palmatifid ; bracts large, often 

 coloured ; fruit without vittae. 



4. Sanicula. — Leaves palmatifid ; umbels sub-globose, irregularly 

 compound ; fruit covered with hooked bristles, without ridges ; 

 vittcb numerous. 



Tribe 3. AmmiiiecE. — Umbels compound: fruit laterally com- 

 pressed : commissure narroiv : primary ridges most co?ispicuous : vittce 

 usually obvious. 



^ Friiit shorty ?iot winged : seed grooved i?i f?'o?it 



5. Danaa. — Fruit globose, bladder-like, with slender thread-like 

 ridges and solitary vitt(^. 



6. CoNiUM. — Fruit ovoid, each carpel with 5 prominent wavy 

 ridges ; carpophore undivided. 



7. Smyrnium. — Floivers yellow ; carpels kidney-shaped, each 

 with three prominent sharp ridges (dorsal and intermediate); 

 vittce numerous ; caipopliore forked. 



■^■^ Fruit short., not winged : seed flat in front 



8. BuPLEURUM. — Erect ; leaves undivided ; floivers yellow ; 

 petals with an inflexed point ; carpophore forked. 



9. TRfNiA. — Leaves pinnate ; floivers white, dioecious ; carpo- 

 phore forked ; vittce 5, large, in the bases of the thick primary ridges. 



10. Apium. — Leaves pinnate or ternate ; bracts absent ; bracteoles 

 many or absent ; floivers white, perfect ; sepals inconspicuous ; 

 petals entire ; ridges slender, prominent ; vittce solitary. 



11. PETROSELfNUM. — Bracts fcw ; bracteoles many; sepals 

 minute ; petals roundish, entire, with a narrow incurved point ; 

 carpophore forked ; ridges slender. 



