128 UMBELLIFER^. 



Thames, where it is a conspicuous species. ' Very rare ' in Herts, a 

 single specimen only haying been gathered near Kickmansworth, close 

 to our boundary. 



286. <E, Pbellandrium, Lam. 

 ThellandrinQn aquaticum (M. & G.). 



Cyb. Br. i. 445 ; Comp. 193. Syme E. B. iv. t. 598. 



Sides of ponds and streams, preferring still water ; rare. B. or P. 



July, August. 

 V. Banks of the canal bet. Hanwell and Brentford ; Hemslcy, In the 

 Brent at Apperton, abundant ; Lees. 

 VII. [At Milbank among the piles ; M. 4' G- 435.] Pool near Hornsey, 

 1815 ; Herh. G. ($• E. Pond at Kentish Town, abundant ; Enriwit, 

 i. 10. [Copenhagen Fields, 1841 ; Herh. Hardw.] Marshy ground 

 near Hammersmith, 1850, W. Wing ; Herb. Mus. Brit. Seven Sisters 

 Eoad, HoUoway, 1864, G. Munby ; Naturalist, 1867, 179. 

 First record: Milne and Gordon, 1793. Chiefly in the metropolitan 

 district. The next species, (E. fluviatilis, is frequently misnamed 

 (E. Phellandrium. 



287. CE. fluviatilis, Coleman. 



MUlcfoUum aquaticnvi, Matth. (Dillen.). PhtUandriwn, J. B. (Blackst.). 

 Cyb. Br. i. 445 ; iii. 354 and 443 ; Comp. 193. Syme E. B. iv. t. 599. 

 In running water ; rather common. B. or P. July, August. 

 I. In Harefield River ( = Colne), plentifully ! ; Blackst. Spec. 72. Grand 



Junction Canal, Harefield (torn up and floating). 

 II. Eiver Colne near Staines and Stanwell, abundant. Eiver Thames 

 from Siinbury Lock to Walton Bridge, Surrey ; Watson. 

 III. In the Cran, abundant throughout its course. Duke's Eiver near 



Isleworth. 

 VII. In Hackney Eiver (=Lea), abundantly; I>ilL in B. Si/n. iii. 216. 

 Ponds at the entrance of Hornsey Wood, ditches in the Isle of Dogs, 

 3Ir. Hurlock; Blackst. Spec. 72.* [New Eiver Head, Clerkenwell; 

 Iro. H. B. P. 592.] Ditch near Victoria Park, 1867 ; Chcrri/ 

 (v. s.). Lea at Temple Mills, and below that point. 

 First record: Billcnius, 1724. This rarely flowers in the open stream, 

 being there quite under water, but in the quieter sheltered places it 

 rises above water and flowers, as in the Cran at Hospital Bridge. 



.ETHTTSA, Li7in. 



288. JE. Cynapiunif L. FooVs Parsley, 

 Cicutaria tenuifolia, Ger. em. (Blackst.). 

 Cyb. Br. i. 446 ; Comp. 193. Curt. F. L. f. 1. 



Cultivated ground, especially gardens and waste places ; ver}- common. 

 A. June — August. 



* Mr. Hurlock's localities more probably refer to 286. 



