TTMBELLIFER^:. 127 



base, with a less evident callous ring, and with the styles and 

 calyx-teeth shorter in proportion. 



Griesbach describes the petals of GE. silaifolia as " sub-equal " 

 (Spic. Fl. Rum. et Bith. Vol. I. p. 357), and the segments of the 

 leaves lanceolate : this does not apply to the English plant so 

 called, which is probably not the GE. silaifolia of Bieberstein : it is, 

 however, that of the Italian botanists, as proved by the Tuscan spe- 

 cimen in Billot's Fl. Exsicc., and apparently also that of Koch and 

 Godron and Grenier, judging from their descriptions. 



The true CE. peucedanifolia has the root-fibres thickest between 

 the base and the middle, which I have not seen in CE. silaifolia, 

 except in young plants previous to flowering, and the fruit is 

 oblong-ovoid, contracted at the top, and bears much resemblance to 

 that of CE. Lachenalii. 



' According to specimens from Armenia, CE. media, Griesbach 

 (Balansa Fl. Armen. No. 52), has the segments of the lower leaves 

 short and broad and the fruit subquadrate-obconic, and is very 

 different from CE. media, Boreau (Bill. Exsicc. No. 1205), which 

 seems to be scarcely distinct from CE.peucedanifolia, Poll. CE. media, 

 Reich. (Ic. Vol. XXI. Tab. 1897) appears to be our CE. silaifolia. 



If it can be ascertained that Bieberstein' s plant is specifically 

 different from the present species, Mr. H. C. Watson's name 

 " (E. Smithii " must be adopted. 



Sulphurwort Water-Dropicort. 



French, (Enantlie & Feuilles de Silaus, 



SPECIES IV.-CEN ANT HE LACHENALII. Gmd. 

 Plate DXCVI. 

 Reich. Ic. Fl. Germ, et Helv. Vol. XXI. Tab. 1892. 

 Billot, Fl. Gall, et Germ. Exsicc. No. 992. 

 GE. pimpinelloides, Sm. Eog. Bot. No. 347. 



Root-fibres slender, terete-cylindrical or cylindrical-clavate. 

 Stem erect, tough, furrowed, hollow, not constricted at the nodes, 

 without stolons or capillary fibres above the tubers. Radical and 

 lower stem-leaves with the pinnae entire or more or less deeply 

 divided into short, elliptical, or oval-oblanceolate blunt mucronate 

 lobes ; upper stem-leaves longer than their solid sheathing petioles, 

 with the leaflets or ultimate lobes elongate linear-strapshaped 

 and acute. Terminal umbel of 6 to 10 rays, not thickened in fruit ; 

 umbellules lax, hemispherical in fruit. Involucre of numerous 

 usually persistent leaves. Cremocarp shortly obovate-ovoid, rounded 

 and contracted at the apex. Styles about three-quarters of the 

 length of the cremocarp. 



