PARSLEY FAMILY. 201 



-H +- Flowers all alike, generally white. 



H- Seed deeply grooved or hollowed down the inner face. 



= Fruit long and slender, club-shaped, or tapering at the base. 



5. OSMORRHIZA. Fruit somewhat sweet-aromatic; 110 obvious oil tubes. Leaves 



twice or thrice ternate. Root sweet-aroinatic. 



= *= Fruit ovate or orbicular. 



6. ERIGENIA. Fruit twin, nearly orbicular, with many oil tubes, 5 very slender ribs, 



flattened on the sides. Low plant in early spring, with finely cut ternately decom- 

 pound leaves; flowers in small heads on a 2-3-rayed leafy umbel, and springing 

 from a round, deep tuber. 



7. CONIUM. Fruit short, broadly ovate, rather strong-scented, compressed at the sides, 



each carpel with 5 strong and more or less wavy ribs ; oil tubes many and minute. 

 Leaves pinnately decompound. 



H- -H- Seed slightly if at all hollowed out on the inner face. 

 = Leaves once pinnate. 



8. SIUM. Fruit globular or short-oblong and contracted on the sides, each carpel with 5 



strong or corky ribs, and commonly 2 or more oil tubes in the narrow intervals. 

 No axis or hardly any left when the carpels separate. Flowers white. Not 

 aromatic. = _ Leaves decompound . 



1 Fruit flattened on the bach and front. 



9. FCENICTJLUM. Fruit oblong ; the two carpels with a broad flat face, 5 stout ribs, and 



a single oil tube in the Intervals between the ribs. Flowers yellow. Leaflets slen- 

 der thread-shaped. Whole plant sweet-aromatic. 



I fl Fruit flattened on the sides. 



10. CICUTA. Fruit globular and contracted on the sides, each carpel with 5 broad and 



thickened blunt ribs, and an oil tube in each interval ; the slender axis between the 

 carpels splitting in two. Flowers white. Leaves not aromatic. Fruit aromatic. 



11. APIUM. Fruit ovate or broader than long, flattened on the sides, each carpel 5-ribbed 



and a single oil tube in the intervals ; axis left when the carpels separate not splitting 

 in two. Flowers white. 



12. CAEUM. Fruit ovate or oblong, flattish on the sides ; each carpel with 5 narrow ribs, 



and a single oil tube in the intervals ; the axis from which the carpels separate split- 

 ting in two. Flowers mostly white. Fruit or foliage aromatic. 



* * Fruit winged or wing-margined at the junction of the two carpels, which are 

 flat on the face and flat or flattish and S-ribbed on the back. Leaves pinnately 

 or ternately compound. 



+- Wing double at the margins of the fruit. 



13. LEVISTICUM. Fruit ovate-oblong, with a pair of thickish marginal wings, and single 



oil tube in each interval. Involucre and involucels conspicuous, the bracts of the 

 latter united by their margins. Flowers white. Plant sweet-aromatic. 



14. ANGELICA. Fruit ovate or short-oblong, with thin or thickish marginal wings, and 



many small oil tubes adherent to the surface of the seed. Involucels of separate 

 mostly small bracts ; involucre hardly any. Flowers white or greenish. 



+- +- Wing surrounding the margin of the fruit, single, splitting in two only when the 

 ripe carpels separate. 



15. HERACLEUM. Fruit, including the thin and broad wing, orbicular, very flat, and the 



three ribs on the back very slender ; the single oil tubes in the intervals reaching 

 from the summit only half-way down. Flowers white, the marginal ones larger and 

 irregular. Leaves ternately compound. Plant strong-scented. 



1C. PASTINACA. Fruit oval, very flat, thin-winged ; the single oil tubes running from 

 top to bottom. Flowers yellow, the marginal ones not larger. Leaves pinnately 

 compound. 



