246 UMBELLIFERAE 



First record. Frilford, Mr. F. Walker in Journ. Bot. 133, 1873. See 

 also the 'author in Rep. of Bot. Rec. Club and Rep. Bot. Exch. Club, 1881. 



1. Isis. Near the junction of the Cole and Thames. 



2. Oek. Moist ground near Frilford Heath, veiy scarce, Walker ; 



a specimen is in Herb. Brit. Mus. Marcham Meadow. Cothill. 

 Marsh between Shippon and Cothill. Between Marcham and 

 Noah's Ark. 

 It is recorded for all the bordering counties except Bucks, as I have 

 seen it in Gloucestershire, near Lechlade. 



[Oe. PTMPiNELLoiDEs, Linn. Sp. PI. 254 (1753). Syme, E. B. iv. 125, t. 594. Is 

 recorded for the counties of Hants, Wilts, and G-loncestershire.] 



Oe. crocata, Linn. Sp. PI. 254 (1753}. Hemlock Water Ihopioort. 



Top. Bot. 197. Syme, E. B. iv. 128, t. 597. Nyman, 297. Fl. Oxf. 134. 



Native. Paludal. Sides of ditches, streams, and ponds. Absent from 

 the north, local in the central portion, but abundant in the south- 

 western part of the county. P. May- August. 



First record. Oenanthe maxima. Ad ripam Tamesis, Mort'son, Plant. 

 UmbelUf. 20, 1672. Also as Oenanthe maxima succo viroso, Cicutae facie, 

 Lobel. In salicetis circa Windsoriam (Bobarf, Morison, Hist. Ox. 

 iii. 288, 1699. A MS. note of about the date of i68o in a copy of 

 Ray's Catalogue records it from near Coleman's Moor. See Phijt. iv. 

 746, 1852. 



2. Oek. Absent from the greater part of the district, being onh" 



known from one locality between Blewbury and Hagborne, 

 where it was detected by Miss Fry in 1894. 



3. Pang. Sulham. Pangbourn. Purley. Standford Dingley. Near 



Englefield. Between Bradfield and Tidmarsh. 



4. Kennet. Thatcham, &c., RusselVs Cat. Speen, Herb. Cecil. Theale. 



Shefford. Bagnor. Southcote. Bucklebury. Beenham. It is 



too frequent on the south side of the Kennet to require 



localities. 



f>. Loddon. Near Windsor, Bobart. Coleman's Moor, MS. in Ray. 



Finchampstead, Penny. Sonning, Tufnail. Wargrave. Hui-st, 



Melvill. Common by the Thames near Henley, Stanton. Ponds 



at foot of Cookham Down, Mill. Marlow, Chandler, Herb. Brit. 



Mus. Shurlock Kow. White Waltham. Kuscombe. Shotte^s- 



brooke. Very abundant in this district. 



Its distribution in Berkshire is very peculiar, being absent from the 



Ui^per Thames and its tributaries from Lechlade as far as to Walling- 



ford. Neither is it found by the Oek stream, although present in 



a single locality at Hagborne in the Oek district. On the north side 



of the Kennet it is local, but extends up the Lambourn nearly to the 



village of that name. On the south side of the Kennet and through 



