188 umbei.lifi:r^. (parsley family.) 



— therefore to be studied In- their fruits, inflorescence, &c., -which likewise 

 exhibit comparatively small diversity. The family is therefore diflicult 

 for the young student. 



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



• UmbeU or heads simple or irregularly compound, sometimes proliferous (i. e. one from the 

 summit of another). 



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



with an orbicular or roundish blade. 



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



|)Ctiole3, with no true blade. 



3. Sail tenia. Fruit clothed with hooked prickles, globular. Flowers pol3'gamous, capitate 



in the umbellets. 



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



perfect, in dense heads. 

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

 •^ Fruit lieset with bristly prickles, not flat. 



5. Daucus. 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. Heracleum. 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. Arclieinuia. 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. Tiedemaiinia. Fruit winged, much as in No. 9. Leaves simple, long and cylindrical, 



hollow, with some cross partitions. 



— .^ <- Fruit smooth, flat or flattish on the back, and double-winged or margined at the edge, 



each carpel also 3 ribbed or sometimes 3-wingedon the back. 



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



Seed not loose. 



12. Archanselica. 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. 

 ^ ^ ^ ^ 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. .X^thnsa. Fruit ovate-globose : carpels with 5 shari.ly keeled ridges, and with single 



oil-tubes in the intervals. 



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



several oil-tubes in each interval. 



16. Tlinspium. Fruit elliptical or ovoid : carpels Swinged or 5-ribbed, and with single 



oil-tubes in each interval Flowers yellow or dark puri>le. 



.^ .^ *. H Fruit smooth, flattened laterally or contracted at the sides, wingless. 



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



tubes 3 in each interval. Leaves compound. 



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



T.A'aves all simple. 



19. Di!<co|>Ieura. Flowers white Fruit ovoid : the lateral ribs united with a. thick corky 



margin. Leaves cut into capillary division*. 



