158 UMBELLIFER^E. (PARSLEY FAMILY.) 



* * Umbels capitate (flower sessile). 



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



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



# # # Umbels compound (flowers pedicelled). 

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



5. DAUCUS. Fruit 9-ribbed. Leaves finely 2-3-pinnate. 



i- -i- Fruit smooth or slightly roughened. 

 ++ Fruit wingless, laterally compressed, or twin. 



6. CTCUTA. Flowers white. Fruit subglobose. Calyx-limb 5-toothed. 



7. CRYPTOTuENIA. Flowers white. Fruit oblong. Calyx-limb obsolete. Divisions of the 



leaves lanceolate. 



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



of the leaves filiform. 



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



leaves filiform. 



10. HELOSCIADIUM. 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. BUPLEURUM. 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 vittae in each interval. 



H- -H- 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 vittae. 



17. ARCIIANGELICA. Carpels 3-ribbed on the back ; the intervals with 2 or more vittae. 



18. CONIOSELINUM. Carpels 3-winged on the back ; the intervals with 2-3 vittae. 



= = Margins of the fruit single-winged. 



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



Leaves simple, terete. 



20. ARCHEMORA. 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. CH^IROPIIYLLUM. Fruit linear-oblong, narrowed towards the apex. 



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



1. HYDROCOTYLE, Tourn. MARSH PENNYWORT. 



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

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

 mediate ones enlarged. Vittce 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-rem'form, crenately 7- 

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

 Carolina, and northward. July. Stems stoloniterous. Leaves very thin, 



