PENTANDRIA— DIGYNIA. Tordylium. 103 



Jagged Cow Parsnep. Pet. H. Brit. t. 24./. 2. 



In hedges, the borders of fields, and rather moist meadows, very 

 common. 



Biennial. July. 



Root tap-shaped, whitish, aromatic, sweetish and rather mucilagi- 

 nous. Stem 4 feet high, erect, branched, leafy, furrowed, rough 

 with white spreading hairs. Leases large, ternate or pinnate; 

 leaflets usually broad, rather heart-shaped, lobed, serrated, veiny, 

 hairy, paler beneath ; varying occasionally very much in breadth, 

 and in the variety /3, which that excellent observer the late Mr. 

 Woodward found growing on the same root with the common 

 kind, deeply pinnatifid, the 2 lowest lobes elongated and spread- 

 ing in a radiating manner, as delineated by Jacquin and Pluke- 

 net. Footstalks hairy ; dilated, ribbed, concave, and sheathing, 

 at the base. Umbels flattish, of many angular rays, which are 

 downy at one side, like the more numerous partial rays. Brac- 

 teas lanceolate, membranous, finely fringed, with long taper 

 points, the general ones few, soon falling off, or altogether want- 

 ing. Fl. more or less conspicuously radiant, white, or reddish ; 

 many, in the central portion of each partial umbel, barren, with 

 no traces of a germen. Fruit abundant, light brown, with 4 

 purplish-brown lines at each side. 



The whole plant is wholesome and nourishing food for cattle ; and 

 is gathered in Sussex for fattening hogs, being known by the 

 name of Hog- weed, as I have learned from Sir Thomas Frank- 

 land. 



Two very able botanists having compared a Yorkshire narrow- 

 leaved specimen, with one from Sweden of the true Linnsean 

 H. angustifolium, they assured me of its being indubitably the 

 same. Hence I admitted //. angustifolium into the Flora Bri- 

 tannica, with a description made from the plant in the Linnsean 

 herbarium, which is clearly a distinct species ; but on seeing the 

 Yorkshire specimen, I at once perceived the mistake, which is 

 corrected in Engl. Bot. Jacquin's angustifolium is doubtless our 

 variety, whatever his longifolium, FL Austr. t. 1 74, a much larger 

 plant, may be, 



172. TORDYLIUM. Hart-wort. 



Linn. Gen. 130. Jiiss. 22A. Fl. i?r. 294. Spreng. Prodr. 11. Tourn. 

 t. 170. Lam. f. 193. Gcertn. t.2\. 



FL more or less perfectly separated, irregular ; those of tlie 

 circumference fertile. CaL of 5 awl-shaped, unequal, de- 

 ciduous or permanent teeth. Pet. 5; in the innermost 

 flowers smallest, nearly equal and uniform, inversely 

 heart-shaped, with an inflexed point : in those of the cir- 

 cumference radiant, variously unequal and irregular, in- 



