146 



WEEDS AXD USEFUL PLANTS. 



Inner face of the seeds flat (not hollowed out) , where the two halves 

 of the fruit join. 

 Fruit with long prickles. Umbel becoming concave. 

 Fruit not prickly but winged on the margin. 

 Flowers yellow. All alike. 

 Flowers white, the outer corollas larger. 

 Flowers white, all alike ; leaves pinnate or 3-foliolate. 

 Fruit neither prickly nor winged on the margin. 

 Flowers yellow ; leaflets long and narrow. 

 Flowers white. 



Umbels usually without involucre or involucels. 

 Divisions of the leaves very slender. 

 Divisions or leaflets wedge-shaped. 

 Divisions or leaflets ovate or lanceolate. 

 Umbels with 3-leaved involucels but no involucre. 

 Umbels with both involucre and involucels. 

 Leaves decompound, finely divided. 

 Leaves 2-3 times compound ; leaflets coarse. 

 Inner face of the seed grooved or hollowed out down the whole length 

 of the inner face. 



Leaves finely cut, with an unpleasant odor. 

 Inner face of the seed curved in at the top and bottom. 

 Flov/ers white. 



Pastinaca. 



Heracleum. 



Archemora. 



5. FOEXICULUM. 



Carum. 

 Apium. 



^GOPODIUM. 



JSthusa. 



Petroselixum 



ClCUTA. 



CONIUM. 

 CORUNDRUM. 



1. DAU'CUS, Tournef. Caekot. 



[Daukos, the ancient Greek name of the Carrot.] 



Calyx 5-toothed. Corolla irregular. Fruit ovoid oblong, somewhat 

 dorsally compressed. Carpels with the 5 primary ribs slender and 

 minutely bristly, the 4 secondary ribs equal, prominently winged, and each 

 pectinately cleft into a single row of prickles with an oil tube under each 

 of them. Involucre many-leaved ; leaflets pinnatifid. Involucels many- 

 leaved ; leaflets trifid or entire. Biennials with leaves bi- or tri-pinnately 

 dissected. 



1. D. Caro'ta, L. Stem hispid ; leaves 2 - 3-pinnatifid ; segments pin- 

 natifid, the lobes lanceolate and cuspidate ; leaflets of the involucre 

 nearly as long as the umbel ; prickles about equal to the diameter of the 

 oblong-oval fruit. 



Carkot Caucus. Carrot. Wild Carrot. 



Fr. Carotte. Germ. Die Moehre. Span. Zanahoria.. 



Plant greyish-green, hispidly pilose. Root fusiform, yellowish or orange-colored. 

 (Sim 2-3 or 4 feet high, rather slender, terete, sulcate-striate, branching. Leaves twice 

 or thrice pinnatifid ; segments half an inch to an inch long, much incised. Umbels on long 

 peduncles or naked branches, nearly level on the top when in flower — concave when in 

 fruit. Petals white or ochroleucous — occasionally with a purphsh tinge — the central floret 

 of the umbel often abortive, with fleshy dark purple petals. I'rnit very hispid, the 

 prickles on the secondary ribs somewhat barbed. 



Gardens, fields and road-sides : inti'oduced. Native of Europe and the East. Fl. July- 

 Sept. i^/-. Sept. -October. 



Obs. The var. sativa, DC, or common Garden Carrot — with a large 

 fleshy yellow or reddish orange-colored root — is much cultivated as a 

 culinary vegetable, for soups, &c. In Europe, it is highly esteemed as 

 a food for Milch Cows, and other stock, during winter ; but in this 

 country, the root culture, for such objects, is but little attended to, 

 probably less than it ought to be. The wild variety is extensively natu- 



