100 DIALYPETALOUS EXOGENS 



obovate, often narrowed to a petiole at base, the common petiole 6 to 12 inches or 

 more in length. Flowers white (or sometimes greenish-yellow!) ; fruits several in 

 each umbellet. 



Obs. Though nearly allied to the preceding, I think this may 

 justly be regarded as a distinct species. It also presents a variety, 

 with dullish yellow flowers. 



3. UMBELS perfectly compound. 

 a. Fruit beset with bristly prickles ; carpels scarcely compressed. 



151. DAITCIJS, Tournef. 

 [From Daulcos, the ancient Greek name.] 



Calyx 5-toothed. Corolla irregular. Fruit ovoid-oblong ; primary 

 ribs slender, ciliate; secondary ribs winged, bristly-pectinate, each 

 covering a single vitta. Biennials : leaves multifid ; umbels finally 

 concave, involucrate. 



1. D. Carbta, L. Stem hirsute ; leaves bi-tri-pinnatifid ; involucre 

 nearly as long as the umbel. 

 CAEOT DAUCUS. Wild Carrot. Garden Carrot. 



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

 large and fleshy under culture. Stem 2 to 3 or 4 feet high, sulcate-striate, rather 

 slender, branching. leaves pinnatifidly dissected; segments half an inch to an 

 inch long, much incised; petioles % an inch to 2 inches in length, sulcate above. 

 Umbels on long naked peduncles, level-topped when in flower, concave in fruit. 

 flowers white or ochroleucous, occasionally with purplish tinge, the central 

 floret of the umbel often dark purple and abortive. Fruit very hispid, the prickles 

 on the secondary ribs somewhat barbed. 

 Hob, Fields, roadsides, &c. Nat. of Europe. Fl. July. Fr. Sept. 



Obs. This foreigner is extensively naturalized, and becoming a 

 troublesome weed, from the culpable negligence of our farmers. 

 The var. SATIVA, DC. or common Garden Carrot, is cultivated as a 

 culinary vegetable, and sometimes for farm stock. 



b. Fruit smooth, f Carpels dorsally much compressed. 

 * Margins of the fruit single-winged. 



152. HERACL.E V UM, L. 



[Dedicated to Hercules ; when LINNAEUS must have been in the " Ercles' vein."] 

 Fruit broadly wing-margined ; carpels slenderly 5-ribbed, the lateral 

 ones close to the margin; vittae clavate, shorter than the carpels. 

 Stout perennials : leaves large, ternately dissected ; petioles broad and 

 sheathing; umbels large, flat; involucre few-leaved, deciduous; in- 

 volucels many-leaved. 



1. H. lanJUum, MX. "Woolly; stem sulcate; segments of the 

 leaves broad, palmate-lobed, subcordate at base. 

 WOOLLY HERACLEUM. Cow-Parsnep. 



Stem 4 to 6 or 8 feet high, branched above. Segments of the leaves 4 to 10 or 12 

 inches in length, and as wide as long, the middle one often 3-lobed; petioles 1 to 

 4 inches long. Umbels sometimes a foot or more in breadth, the rays 2 to 6 inches 

 long. Involucels of 5 or 8 leaves, which are lanceolate, with a long slender acumi- 

 nation. Flowers white. 

 Hob. Low grounds; along Braudywine: frequent. Fl. May. Fr. July. 



