158 UxMBELLIFER^. (PARSLEY FAMILY.'i 



* * Umbels capitate (flower sessile). 



3. SANICULA Fruit bristly, globular. Flowers polygamous. Inrolucel none. 



4. ERYNGIUM. Fruit scaly, turbinate. Flowers perfect, bracted. Heads involucelled. 



* # * UmbeKs compound (flowers pedicelled). 

 H- Fruit with bristly ribs ; the bristles in a single row. 

 .5 D.iUCCS. Fruit 9-ribbed. Leaves finely 2 - 3-pinnate. 



+• ^- Fruit smooth or slightly roughened. 

 +* Fruit wingless, laterally compressed, or twin. 



6. CICUTA. Flowers white. Fruit subglobose. Calyx-limb &-toothed. 



7. CRYPT0T.S:NIA. Flowers white. Fruit oblong. Calyx-limb obsolete. Divisions of the 



leaves lanceolate. 



8. liEPTOCAULIS. Flowers white. Fruit ovate, rough Calyx-limb obsolete. Divisions 



of the leaves filiform. 



9. DISCOPLEUKA. Flowers white. Fruit ovoid. Calyx-limb 5-toothed. Divisions of the 



leaves filiform. 



10. HELOSCIADIlJ.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. Leaves pinnate 



12. BUPLEUllUM. Flowers yellow. Fruit ovoid-oblong. Leaves simple. 



13. ZIZIA. Flowers yellow. Fruit ovoid-oblong ; the intervals with 3 vittae. 



14. THASPIUM. Flowers yellow or dark purple. Fruit ovoid or oblong ; the intervals with 



single vittae. 



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



■w- <-* Fruit dorsally compressed, winged on the margins. 

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



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



17. ARCHANGELTCA. Carpels 3-ribbed on the back the intervals with 2 or more vittse. 



18. CONIOSELINUM. Carpels 3-wiDged on the back ; the intervals with 2-3 vitta;. 



= = Margins of the fruit single-winged. 



19. TIEDEMANNIA. Fruit broadly winged. Blarginal wings remote from the 3 dorsal ones. 



Leaves simple, terete. 



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



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



woolly. 



§ 2. Inner face of the seed concave. 



22. CHJJROPIIYLLUM. Fruit linear-oblong, narrowed towards the apex. 



23. OSMORRIIIZA. Fruit linear-clavate, narrowed towards the base. 



1. HYDROCOTYLE, Toum. Marsh Pexntwort. 



Calyx-teeth obsolete. Petals not incnrved. Fruit laterally compressed, or- 

 bicular. Carpels 5-ribbcd, the dorsal and lateral ones often obsolete, the inter- 

 mediate ones enlarged. Vitta3 none. — Low marsh herbs, with slender creep- 

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

 white. 



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

 lobed ; umbels sessile, 3-5-flowercd; fruit 2-ribbed. — Mountains of North 

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

 glossy. 



