Voi,. II.] 



CARROT FAMILY. 



525 



20. AMMOSELINUM T. & G. Pac. R. R. Rep. 2: 165. 1855. 



Low branching annuals, with ternately divided finely dissected leaves, the ultimate leaf- 

 segments linear, spatulate, or oblong, and small white flowers in terminal sessile or pedun- 

 cled slender-rayed umbels. Involucels of a few linear or dissected bracts. Calyx-teeth obso- 

 lete. Fruit ovate to oval, laterally flattened, strongly ribbed, the ribs tuberculate or spinu- 

 lose-tuberculate; pericarp very thick and dense; oil-tubes solitary in the intervals, and 2 on 

 the commissural side. Styles and conic stylopodium short. [Greek, sand-parsley.] 



Two known species, natives of the southwestern United States and Mexico. 



i. Ammoselinum Popei T. & G. 

 Pope's Sand-parsley. (Fig. 2668.) 



Ammoselinum Popei T. & G. Pac. R. R. Rep. 2: 



165. 1855. 

 Aprum Popei A. Gray, Proc. Am. Acad. 7: 343. 



1868. 



A diffusely branched herb, 6 / -i5 / high, the 

 angled branches, rays of the umbels and pedi- 

 cels rough. Lower leaves slender-petioled, 

 the upper sessile, or nearly so, all dissected 

 into linear obtuse or acutish segments about 

 Yz ff wide; involucre usually of i dissected leaf 

 or more; involucel-bracts few, entire, or dis- 

 sected; longer rays of the umbels i' long in 

 fruit, or less, the shorter ones often i-flowered; 

 fruit ovate, 2 // -2 - ^ // long, narrowed above, 

 i" wide, or a little more, the ribs rather 

 strongly tubercled, or even spinulose. 



In sandy soil, western Kansas to Texas, Mex- 

 ico and Arizona. April-May. 



21. FOENICULUM Adans. Fain. PI. 2: 101. 1763. 



Erect biennial or perennial glabrous herbs, with pinnately decompound leaves, the seg- 

 ments linear or capillary, and compound umbels of yellow flowers. Involucre and involu- 

 cels none. Calyx-teeth obsolete. Petals obtuse or slightly retuse at the apex. Stylopodium 

 large, conic. Fruit linear-oblong, glabrous, terete or nearly so. Carpels half-terete, dor- 

 sally flattened, prominently ribbed; oil-tubes solitary in the intervals. Seed-face flat, or 

 slightly concave. [Latin, diminutive of foenum, hay, from its odor.] 



About 4 species, natives of the Old World. 



i. Foeniculum Foeniculum (L,.) Karst. Fennel. (Fig. 2669.) 



Anelhrum Foeniculum L,. Sp. PI. 



263- 1753- 

 Foeniculum vulgare Gaertn. 



Fruct. & Seni. i : 105. 1788. 



Foeniculum Foeniculum Karst. 

 Deutsch. Fl. 837. 1880-83. 



Perennial, branched, 2-4 

 high. Leaves very finely dis- 

 sected into capillary segments; 

 petioles broad, clasping; umbels 

 large, 9-25-rayed, the rays 

 rather stout, somewhat glau- 

 cous, i '-3' long in fruit; pedi- 

 cels i // -4 // long, slender; fruit 

 about 3 /x long. 



In waste places, New Jersey and 

 Pennsylvania to Virginia and 

 Louisiana, escaped from gardens. 

 Adventive from Europe. Called 

 also Dill, Finkel, Spingel. July- 

 Sept. 



