194 



UMBELLfFERjE 



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 of pig-nuts or earth-nuts, are eaten 

 by children and pigs. 



Tribe i. Hydrocotylece. — Umbel simple : fruit much compressed 



laterally : commissure narrow : no carpophore or vittce 

 i. Hydrocotyle. — Creeping; leaves simple, peltate. 



Tribe 2. Saniculeoz. — Umbel simple, capitate or irregularly com- 

 pound : fruit slightly dorsally compressed : commissure broad : no 

 carpophore. 



2. Eryngium. — Leaves spinous ; umbels in dense heads ; fruit 

 scaly, without ridges or vittse. 



*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 ; 

 vitta numerous. 



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

 pressed : commissure narrow : primary ridges most conspicuous : vittce 

 usually obvious. 



* Fruit short, not winged : seed grooved in front 



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

 ridges and solitary vittce. 



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

 ridges ; carpophore undivided. 



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

 with three prominent sharp ridges (dorsal and intermediate) ; 

 vittce numerous ; carpophore forked. 



** Fruit short, not winged : seed flat in front 



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

 petals with an inflexed point ; carpophore forked. 



9. TRfNiA. — Leaves pinnate ; flowers 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 ; flowers white, perfect ; sepals inconspicuous ; 

 petals entire ; ridges slender, prominent ; vittce solitary. 



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

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

 carpophore forked ; ridges slender. 



