444 MYRICACEAE 



irregularly cut, /. criapa, and it has also been seen near Headington 

 Wick in Oxfordshire. 



U. dioica occurs in all the English counties. 



U. urens, Linn. Sp. PI. 984 (1753). Small Stinging Nettle. 



Top. Bot. 367, Syme, E. B. viii. 130, t. 1382. Nyman, 657. Fl. Oxf. 262. 



Native. Viatical. Waste ground, manure-heaps, usually near villages. 

 Generally distributed, but much scarcer than U. dioica. A. June- 

 September. 



First record. U. pilulifera [sic], Mavor''s Ayr. Berks, 1809. U. nrena. 

 Common under mud walls at Blewbury, Mr. J. Lousley in 

 Russell's Cat. 1839. 

 I have seen it at 800 feet on the Ridgeway. 

 U. urens occurs in all the bordering counties. As is the case with 



Chenopodium urMcum, C. hyhridmn, C. murale, C. flcifoliion, C. Vidvaria, 



and C. opulifoUum, U. urens has really the appearance of a colonist 



rather than that of a native plant in Berkshire. 



PARIETARIA, Linn. Gen. n. 1020 (Tournefort, Inst. t. 289). 

 P. ramiflora, Moench, Meth. 327 (1794). Wall Pellitory. 



P. officinalis, Linn. Sp. PI. 1052 (1753), p.p. and i. 827. Sm. E. B. 



t. 879, P. diffusa, Mert. & Koch, Deutsch. FL, not of Schur. 



P. judaica, Index Kewensis and auct., not of Linn. P. vulgaris. 



Park. 437 (1640). 



Top. Bot. 367. Syme, E. B. viii. 126, t. 1278. Nyman, 658. Fl. Oxf. 263. 



Native. Rupestral. Old walls, hedge-banks, &c. Common in all the 



districts. P. June- September. 

 First record. Windsor Castle Walls, Br. Dillenius, in Herb. Oxf. 1720. 

 P. officinalis. Dr. Noehden, Mavor's Agr. Berks, where it states that 

 the leaves strewed in granaries destroy weevils. 

 Parietaria is found in all the bordering counties. 



I cannot follow the synonymy of this and its allied species in the 

 Index Kewensis. The true P. officinalis, Linn. = P. erecta, Mert. & Koch, 

 1. c, does not occur in Britain. It may be known by its campanulate 

 as contrasted with the tubular perianth. 



MYRICACEAE, Dumort. Anal. Fam. 95 (1829). 



MYRICA, Linn. Gen. n. 981. 



M. Gale, Linn. Sp. PI. 1024 (1753). Sweet Gale, Bog Myrtle, Dutch Myrtle. 



Galefrutex odoratus ... J. Bauhin, Hist. i. 224. Gale, Tournefort. 

 Top. Bot. 378. Syme, E. B. viii. 189, t. 1298. Nyman, 673. Fl. Oxf. 276. 

 Native. Uliginal. Damp heathy places and gullies. Very local. 



Absent from the north of the county. Shrub. April-June. 

 First record. Rhus sylvestris sire Myrtus Brabantica aut Anglica. By Old 



