138 THE FLORA OF THE ALPS 



hollow, nearly simple, flowers greenish -yellow, leaf-sheaths 

 often very broad and tinged with violet ; Eastern Pyre- 

 nees (rare), Valine d'Eynes. 



39. (Enanthe, L. 



Bracts of general and partial involucre very few or o ; 

 calyx-teeth acute ; petals with a long inflexed point ; stem 

 hollow. Glabrous, mostly aquatic or marsh plants ; not 

 alpine. 



CE. fistulosa, L., Water-Dropwort ; umbels with 2-4 

 branches, on hollow stalks, leaves on long stalks, with few 

 narrow segments ; ditches,rare. (R. Phellandrium^ Lam. ; 

 umbels with 7-10 branches, stem very thick, leaves often 

 submerged, with capillary segments ; ditches, rare. CE. 

 Lachenaliiy Gmel. ; leaves bi-pinnate, umbel with 8-15 

 branches, root-fibres tuberous; marshy meadows, rare. 

 (R. peucedanifolia^ Poll. ; resembling the last, but ulti- 

 mate leaf-segments narrower, root-fibres not tuberous; 

 ditches ; Southern Switzerland, Jura, rare. 



40. iETHUSA, L. 



Bracts of general involucre i or o, of partial about 3, 

 always deflexed and on one side only ; vittae solitary. Not 

 alpine. 



M, Cynapium^ L., Fool's Parsley; cultivated land, 

 common. 



41. SiLAUS, Bess. 



Bracts of general involucre few or o, of partial many, 

 small ; flowers yellowish ; calyx-teeth o ; petals with an 

 incurved tip ; fruit ovoid, oblong ; vittae obscure. Not 

 alpine. 



