188 UMBELLIFER^E. (PARSLEY FAMILY.) 



— therefore to be studied by their fruits, inflorescence, &c, which likewise 

 exhibit comparatively small diversity. The family is therefore difficult 

 for the young student. 



I. Inner face of each seed flat or nearly so (not hollowed out). 



* Umbels or heads simple or irregularly compound, sometimes proliferous (i. e. one from the 

 summit of another). 



1. Hydrocotyle. Fruit smooth, orbicular or shield-shaped, flattened laterally. Leaves 



with an orbicular or roundish blade. 



2. Crantzia. Fruit smooth, globular, corky. Leaves are thread-shaped or awl-shaped 



petioles, with no true blade. 



3. Sanicula. Fruit clothed with hooked prickles, globular. Flowers polygamous, capitate 



in the umbellets. 



4. Eryngium. Fruit clothed with appressed scales or tubercles, top-shaped. Floweni 



perfect, iu dense heads. 



# * Umbels compound and perfect ; i. e. its rays regularly bearing umbellets. 

 •*-. Fruit beset with bristly prickles, not fiat. 



5. Dancns. Fruit beset with weak prickles in single rows on the ribs. 



— - ■*- Fruit smooth, strongly flattened on the back, and single-winged or margined at the junc- 

 tion of the 2 carpels (next to the commissure). 



6. Polytseuia. Fruit surrounded with a broad and tumid corky margin thicker than the 



fruit itself, which is nearly ribless on the back. 



7. Heraclewm. Fruit broadly wing-margined: the carpels minutely 5-ribbed on the back : 



lateral ribs close to the margin. Flowers white, the marginal ones radiant. 



8. Pastiiiaca. Fruit wing-margined : ribs of the carpels as in No. 7. Flowers yellow, the 



marginal ones perfect, not radiant. 



9. Aichemora. Fruit broadly winged : the 5 ribs on the back equidistant ; the 2 lateral 



ones close to the wing. Flowers white. Leaves pinnate or 3-foliolate. 



10. Tiedemaimia. Fruit winged, much as in No. 9. Leaves simple, long and cylindrical, 



hollow, with some cross partitions. 

 h_ h_ ^_ Fruit smooth, fiat or flattish on the back, and double-winged or margined at the edge, 

 each carpel also 3-ribbed or sometimes 3-winged on the back. 



11. Angelica. Carpels with 3 slender ribs on the back ; a single oil-tube in each interval. 



Seed not loose. 



12. Archangelica. Carpels with 3 rather stout ribs on the back, and 2-3 or more oil- 



tubes in each interval adhering to the loose seed. 



13. Conioselinum. Carpels with 3 wings on the back narrower than those of the margins. 



_ — h- *- Fruit smooth, not flattened either way, or only slightly so, the cross-section nearly 



orbicular or quadrate ; the carpels each with 5 wings or strong ribs. 

 14 JEthnsa. Fruit ovate-globose : carpels with 5 sharply keeled ridges, and with single 

 oil-tubes in the intervals. 



15. Ligusticum. Fruit elliptical: carpels with 5 sharp almost winged ridges, and with 



several oil-tubes in each interval. 



16. Thaspinm. Fruit elliptical or ovoid: carpels 5-winged or 5-ribbed, and with single 



oil-tubes in each interval. Flowers yellow or dark purple. 



h_ +. +. „_ h- Fruit smooth, flattened laterally or contracted at the sides, wingless. 



17. Zizia. Flowers yellow. Fruit oval, somewhat twin : the carpels narrowly 5-ribbed : oil- 



tubes 3 in each interval. Leaves compound. 



18. Bupleurum. Flowers yellow. Fruit ovoid-oblong: the carpels somewhat 5-ribbed. 



Leaves all simple. 



19. Discopleuva. Flowers white Fruit ovoid : the lateral ribs united with a thick corky 



margin. Leaves cut into capillary divisions. 





