CLASS XIII. ORDER I.J CHELIDONIUM, 757 



towards the apex; leaves two or three times pinnatifid, with linear 

 segments; stem smooth. 



English Flora, vol. iii. p. 7. — Hooker, British Flora, ed. 4. vol. i. 

 p. 213. — Chelidonium hybridum, Linn. — English Botany, t. 201. — 

 Romeria hyhrida. — De Cand. Prod. 1. p. 122. — Lindlev, Synopsis, 

 p. 18. 



Root slender, tapering. Stem erect, from six to twelve inches high, 

 erect, round, mostly smooth, and branched. Leaves mostly numerous, 

 opposite or alternate, the lower ones stalked, the upper sessile, two or 

 three times pinnatifid, the segments narrow, linear, dark green on the 

 upper side, paler beneath, with a prominent mid-rib, the point obtuse, 

 with a bristly apex. Flowers lateral and terminal, on simple footstalks. 

 Calyx of two oblong concave pieces, somewhat rough, falling away as 

 the flower expands. Petals roundish, wedge-shaped, creased, of a fine 

 violet blue, pink at the base, lasting only a few hours. Pod from two 

 to three inches long, erect, cylindrical, rough, with rigid erect bristles, 

 especially towards the apex, opening when ripe with three or four 

 valves, with as many membranous disseppiments, pitted for the recep- 

 tion of the kidney-shaped reticulated seeds. 



Habitat, — Corn fields; rare in Norfolk and Cambridgeshire. 



Annual ; flowering in May and June. 



GENUS IV. CHELIDO'NIUM.— Linn. Celandine. 

 Nat. Ord. PAPAVERA'cEiE. De Cand. 



Gen. Char. Calyx of two caducous pieces. Petals four. Stigma 



two lobed. Capsule a linear one celled two valved pod. Seeds 



numerous, crested. — Name from xEX*^oe;v, a sivallotv ; what 



reference the plants of this genus have to swallows we do not 



know : perhaps it is so named, as Hooker observes, from the plant 



flowering about the time of the arrival of those birds. 



1. C. ma'jus, Linn. (Fig. 860.) Common Celandine. Peduncles 



umbellate ; leaves pinnatifid, with rounded segments and toothed lobes. 



English Botany, t. 1581. — English Flora, vol. iii. p. 4. — Hooker, 



British Flora, ed. 4. vol. i. p. 213. — Lindley, Synopsis, p. 18. 



jS. laciniatum, Koch. Segments of the leaves cut into jagged acute 

 lobes ; petals often cut or crenated. 



C. laciniatum, Mill. — De Cand. Prod. l.p. 123. — Lindley, Synopsis, 

 p. 18. — C. majus, var. 13. Smith. 



Root tapering. Stem about two feet high, round, branched, leafy 

 swollen at the joints, glaucous green, smooth or hairy. Leaves pin- 

 natifid, with two or three pair of opposite distant lobes, and a large 

 terminal one all more or less deeply cut, with rounded toothed seg- 

 ments, or as in the variety laciniatum^ cut into narrow acute ones, the 



5 F 



