118 UMBELLIFER.E. [JSthusa. 



at once be known by its larger size, branched stems, and more com- 

 pound shining leaves. I observed this last on a ditch bank between 

 Bally beg and Kells, County of Meath, in a naturalized state, but it has 

 evidently been the outcast of a garden. 



9. SILAUS. Besser. Pepper-Saxifrage. 



Calyx obsolete. Petals obovate, submarginate with an inflexed 

 point, appendaged, or sessile and truncated at the base. Fruit 

 subterete. Carpels with five sharp, somewhat winged equal 

 ridges, of which the lateral ones are at the margin. Interstices 

 with many vittce. Seed subsemiterete. Universal involucre 

 of few haves, or none; partial of many leaves. Scarcely dif- 

 ferent from Ligusticutn, except in its yellowish, nearly entire, 

 (not acutely emarginate) petals, truncated and sessile at the 

 base. Name of dubious origin. It was applied by Pliny to 

 some herb. Pentandria. Digynia. 



1. S. prafensis, Besser. Meadow Pepper* Saxifrage. Leaves 

 tripinnate; leaflets linear-lanceolate, opposite; general involucre 

 of one or two leaves. Br. FL 1. p. 121, Peucedantim Silaus, 

 Linn. E. Bot. t. 2142. Cnidium Silaus, Spreng. E. FL v. ii. 

 p. 91. 



Pastures and meadows, rare in Ireland. Gravelly bank by the side 

 of the Foyle river, County of Derry ; Mr. D. Moore. Fl. July 

 Sept. !(.. One to two feet high. Partial umbels small, distant. 

 Flowers pale yellow. Whole plant fetid when bruised, apparently 

 refused by cattle. Hook. 



10. .^ETHUSA. Linn. Fool's Parsley. 



Calyx obsolete. Petals obcord ate, with an inflexed point. Fruit 

 ovato-globose. Carpels with five elevated, thick, acutely cari- 

 nated ridges, the lateral ones marginal and a little broader, 

 bordered by a somewhat winged keel. Interstices with single 

 vittce. Seed semiglobose. Universal involucre 0, partial of 

 3 unilateral drooping leaves. Name from aiSco, to burn, on 

 account of its acrid quality. Pentandria. Digynia. 



1. IE. Cynapium, Linn. Common Fool's Parsley. Leaves 

 uniform ; leaflets wedge-shaped, decurrent with lanceolate seg- 

 ments. Br. Fl. 1. p. 122. E. Fl. v. ii. p. G4. E. Bot. t. 1 192. 



Fields and gardens. Fl. July, Aug. 0. One foot high. Stem 

 striated, branched, very leafy. Leaves glabrous, doubly, or the lower 

 ones trebly, pinnate. Segments ovato-lanceolate, variously cut. Umbels 

 terminal, on long stalks. Umbellules small, distant. Universal invo- 

 lucre none, partial involucres of three, long, pendent leaves, all on one 

 side, by which it is readily known from other umbelliferous plants. 

 The smell is nauseous, and it is esteemed very unwholesome. 



