1,')8 UMltKI.I.iri.li.i:. (I'AKSI.KY lAMII-V.) 



• • Umlifls riipitatp (flower Bcssile). 



3. SANIt'l'LA Fruit bristly, fclolmlar. Flowers poljirnmoUK. Involiirpl none. 



4. KKVNUIUM. Fruit 8culy, turbinutu. Flowi-rx purfcvt, liractvil. Ilcudii iuTOlucelled. 



# • • I'iiiIu'Ih Cfinipounil (flowem peilirelle<l). 

 1- Fruit with bristly ribs ; the bristles in a singlo row. 

 5 DAUCDS. Fruit It-ribbod. Leaves finely 2 -3-piiinat«;. 



■t- ■<- Fruit smooth or slightly rouithcncU. 

 ■w- Fruit winitless. laterally compressed, or twin, 

 fi. CICUTA. Flowers white. Fruitsubglobo.se. C'alyx-liuib O-tootheJ. 



7. CKYl'TOT.KNIA. Flowers white. Fruit obloni;. Culyx-liuib ob.«oletc. Divisions of the 



leaves lanceolate. 



8. LEI'XOCAL'LIS. Flowers white. Fruit ovate, rough Caly.\-limb obsolete. Divisions 



of the leaves filiform. 



9. DISCOl'LEUKA. Flowers white. Fruit ovoia. Calyx limb 5 toothed. Divisions of the 



Ipave.s filiform. 



10. IIKLOSCI.XDIf.M. Flowers white. Fruit oblong. Calyx-limb obsolete. Involucre 1 3- 



leaved, or none. 



11. SIUM. Flowers white. Fruit globose. Calyx-teeth minute or none. Involucre 5 - 6- 



leaved. Ixjaves pinnate 



12. BUPLEUUL'JI. Flowers yellow. Fruit ovoid-oblong. Leaves simple. 



13. 7.\7AA. Flowers yellow. Fruit ovoid-oblong ; the interval.* with 3 vittiT. 



14. THASPIUJI. Flowers yellow or darli purple. Fruit ovoid or oblong ; the intervals with 



single vittae. 



15. LIGUSTICUM. Flowers white. Fruit elliptical, with several vittiB in each interval. 



+♦ +* Fruit dorsally compressed, winged on the margins. 

 = Margins of the fruit double-winged. Flowers white. Leaves pinnately compound. 



16. ANGELICA. Carpels 3-ribbed on the back , the intervals with single vittoe. 



17. AUCIIAN'GELTCA. Carpels 3-ribbed on the back the intervals with 2 or more vittje. 



18. COMOSELINUM. Carpels Swinged on the back ; the intervals with 2 - 3 vittw. 



= = Margins of the fruit single-winged. 



19. TIEDEMANXIA. Fruit broadly winged. Marginal wings remote from the 3 dorsal ones. 



Leaves simple, terete. 



20. ARCIIEMOUA. Fruit as in No. 19. Leaves pinnate or ternate. 



21. IIERACLEUM. Fruit with all the ribs equidistant. Marginal flowers sterile. Plant 



woolly. 



§ 2. Inner face of the seed concave. 



22. CII.T.ROPIIYLLUM. Fruit linear-oblong, narrowed towards the apex. 

 2-3. OSMORRinZA. Fruit linear-clavate, narrowed towards the base. 



1. HYDROCOTYLE, Tourn. Marsh rExxvwoRX. 



Calyx-tcetli ob.solctc. I'etals not incurved. Fniit laterally compressed, or- 

 bicular. Carpels 5-ribl)cd, the dorsal and lateral ones often obsolete, the inter- 

 mediate ones enlarjied. Vittic none. — Low marsh herbs, with slender creep- 

 ing stems, and peltate or reniform leaves. Umbels small, axillary. Flowers 

 white. 



1. H. Americana, L. Smooth ; leaves orbicular-reniform, crenately 7- 

 lobcd ; umbels sessile. 3 - 5-flowered ; fruit 2-ribbcd. — Mountains of North 

 Carolina, and northward. July. — Stems stolonitcrous. Leaves very thin, 

 glossy. 



