120 UM BELLI FERJE. \_Sium. 



Sandymount. Banks of the Lagan, near Belfast ; Mr. Templfton. 

 Suit marsh near Castletown, County of Cork ; Mr. J. Drummond. 

 Fl. .July. It .Two feet or more high. UtnbdLdes thickly crowned, 

 forming almost sphaerical heads when in fruit. This was inserted, by 

 mistake, in my catalogue, &&CE.peucedani/olia, to which it is strongly 

 allied. The latter has not yet been found in Ireland. 



3. CE. crocala, Linn. Hemlock Water- Dropic or t. Leaves tri- 

 quadripinnate ; leaflets cuneato-ovate, cut and serrated, those of 

 the upper leaves narrower; general involucre of few leaves. Br. 

 Fl \ . pi 123. E. Fl. v. ii. p. 71. E. Bot. t. 2313. 



Watery places, by ditches and rivers, frequent. Fl. July. 1. 

 Root consisting of many fleshy knobs or tubers, abounding with an 

 orange coloured, fetid, very po'isonous juice, such as exudes less plen- 

 tifully from all parts of the herb when wounded. Plant three to five 

 feet high ; different from all the preceding in the great breadth of its 

 leaflets, and large, much ramified stems. 



4. QE. Phellandrium, Spreng. Fine-leaved Water-Drr>pwort. 

 Leaves decompound, nearly uniform with narrow oblong, short, 

 divaricated segments; peduncles lateral; general involucre 

 scarcely any. Br. Fl.l.p. 124. E. FL v.u.p. 71. Phel- 

 landrium aquaticum. Linn. E. Bot. t. 648. 



Ditches and pools, by the verge of the large pond at Woodlands, 

 very plentiful in ditches and drains near the lake at Farnham, and else- 

 where in the County of Cavan. Fl. July. It. Stem two to three 

 feet high, very thick below, much branched, branches spreading. 

 Umbels rather small ; mostly perfect in every flower. 



(VI. AMMI TRIBE.) 

 13. SIUM. Linn. Water- Parsnep. 



Calyx of five teeth, or obsolete. Petals obcordate, with an in- 

 flexed point, or entire and ovate. Fruit laterally compressed, 

 or contracted and subdidymous, crowned with the reflexed 

 styles with their depressed bases. Carpels with five equal, 

 filiform, rather obtuse ridges, of which the lateral ones are 

 marginal. Interstices with one or many vittce. Seed subterete. 

 Universal involucre various, partial of many leaves. (Sium 

 and Helosciadium, Koch.) Name derived, according to Theis, 

 from the Celtic word siw, water. Pentandria. Digynia. 



1. S. fafifolium, Linn. Broad-leaved Water- Parsnep. Stems 

 erect, leaves pinnated ; leaflets oblongo-lanceolate, equally ser- 

 rated ; umbels terminal. Br. Fl. 1. p. 125. E. Fl. v. ii. p. 56. 

 E. Bot. t. 204. 



River-sides, ditches, and watery places. Bog of Curragha, near 

 Ashbourne ; Mr. Underwood. " Plentiful about Lough Erne, and 

 by the banks of the river Fergus above the bridge of Ennis. Port- 

 more, County of Down ; Mr. Templeton. Fl. July, Aug. It. 

 Stem three to four feet high, furrowed. Fruit small. Leaflets dis- 

 tant, five to nine 011 a leaf. 



