cr.Ass v. ORDER ii.] TOKILUS. 403 



3. T. nodo'm, Giirtn. (Fig. 463.) Knotted Iledije Parsley. Stem 

 prostrate; branches spreading; leaves bi-pinnatc; leaflets piuuatifid 

 and cut ; umbels opposite, sessile, globose ; fruit on the outer side 

 with prickles, on the inner, rough, with granules. 



English Flora, vol. ii. p. 44. Hooker, British Flora, vol. i. p. 137. 

 Lindley, Synopsis, p. 114. Caucalis nodosa. English Botany, t. 199. 

 Tordylium nodosum, Linn. 



Root slender, branched. Stem prostrate, with spreading leafy 

 branches, about a foot long, round, striated, rough, with reflexed 

 bristles, sometimes almost smooth. Leaves bi-pinnate, on striated 

 footstalks, channeled above, rough, with bristles, leaflets ovate-lanceo- 

 late opposite, pinnatifid, with simple lanceolate, linear, acute, short or 

 cut segments, rough, with bristles, especially on the under side, the 

 terminal leaflet mostly elongated. Umbels small opposite the base of 

 a leaf, crowded into a globose form, sessile, or on a very short pedicle, 

 with about three short rays. General involucre mostly wanting, or of 

 one Segment, the partial of several awl-shaped bristly ones. Flowers 

 very small, white, or pinkish. Calyx small. Petals very small, nearly 

 regular, inversely heart-shaped, with a small inflexed point, the outer 

 ones rather larger. Stamens on short filaments, with small roundish 

 ovate pinkish or white anthers. Styles very short, with a flattish disk. 

 Fruit ovate, those oil the outer side of the umbels clothed with rough 

 prickles, with several small reflexed teeth at the apex, but those 

 carpels on the inner side and the centre of the umbels rough, with 

 hoary granulations, without prickles. Albumen rounded at the back, 

 channeled in front. 



Habitat. Road sides and waste places ; frequent, especially in a 

 dry gravelly or chalky soil. 

 Annual ; flowering in May and June. 



The plants of this genus are in many parts of the country trouble- 

 some weeds ; the seeds are conveyed about by birds, animals, &c., 

 sticking to them by their small hooked prickles, which are very curi- 

 ously constructed, and very beautiful objects beneath the microscope. 



TRIBE 8. SCANDICINE^. Koch. Fruit with the sides compressed 

 or contracted, often beaked. Carpels with five primary equal 

 filiform sometimes winged ridges, the lateral ones forming the 

 margins. Secondary ridges none, and sometimes the whole are 

 obliterate, except in the beak. Albumen convex at the back, 

 deeply channeled in front, or the margins rolled inwards. 



VOL. I. 



