THE FLORA OF LIVEEPOOL, 



Ord. LXV. Polygonace^. Juss. 

 The Btcckwheat Family. 



1. POLYGONUM. Linn. Persicaria, Bistort. Knot-grass 

 and Buckwheat. Octand. Trigyn. L. 



1. P. BisTOETA. L. (Common B. or Snakeweed.) June — 



September. 2| 



Moist pastures and meadows, not unfrequent In some 

 low ground to the south east of Roby village, plentiful, 

 — W.S. In a field near the bottom of the Botanic Garden, 

 plentiful. Very abundant in the woods, immediately after 

 passing the Stop-gate, between Croxteth and Knowsley 

 Halls,— W.H. Fazakerley, plentiful,— R. Tudor. Alsc. 

 near Childwall, Hale, Southport, &c. Also occasionally 

 met with in Wirral. 



2. P. AVicuLAEB. L. (Common K.) May — Sept. 



Waste ground and roadsides, very common. 



" The larva of A$pilaie$ purpurarta (the Purple-barred Yellow), feeds on this 

 plant." 



3. P. EoBEETi. Lois. fP. Baii. Bab. P. maritimum. Bay.) 



(Boberts K.) July — September. 



Sea shore of Bootle and Crosby. 



4. P. Convolvulus. L. (Climbing B.) July — Sept. 



Waste and cultivated (especially com and potatoe) fields, 

 common. 



5. P. AMPHiBUUM. L. (Amphibious P.) July, Aug. U 



Vae. a. P. AQUATicuM. Hook. & Arnott. " Leaves 

 floating broadly lanceolate glabrous, spikes 

 oblong." 



In the canal, and by the sides of ponds and ditches, 

 common. 



Vae. b. P. tereestee. Hook. & Arnott. " Nearly 

 erect, leaves narrow-lanceolate rough, with short 

 appressed hairs on both sides, spikes ovate." 



Moist places where water has stood during the winter, 

 common. ♦ 



6. P. Peesicaeia. L. (Spotted P.) July — October. 



Waste ground and wet places, common. 



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