476 BOTANICAL NOTES^ NOTICES, AND QUERIES. [Jutie, 



lowest in the preceding night, at 4 feet above the ground, 20° ; 

 and the lowest on the grass, 10° 7'. The two consecutive weeks, 

 ending July 18th and 25th, may be considered the hottest period 

 of the year ; the mean temperature of each week was 68°, a very 

 unusual temperature to last for two successive weeks in this 

 country. The hottest day of the year was the 28th of June, when 

 the mean temperature was 73° 7', the highest in the shade 92° 7", 

 and the highest in the sun 119°." The elevated social, moral, 

 and religions tone of this periodical is highly commendable. 



BOTANICAL NOTES, NOTICES, AND QUERIES. 



DrOSERA INTERMEDIA. 



Sh, — I must express my thauks to IVIi-. Baker, through your pages, 

 for calling my attention to the plant which I specified too hastily as Dro- 

 sera intermedia at p. 309. On close examination it proves, as he antici- 

 pates, to be a mountain fonn of D. anglica, distinguished as a separate 

 species under the name of B. obovata by some Continental botanists, but 

 regarded by Mr. Babington as a mere variety of the normal form'. I was 

 originally led into the eiTorby having only the 'British Flora' to compare 

 my plant with, which happens to be singularly meagxe in its descriptions 

 of the BrosercE, — omitting all mention whatever of the var. B. obovata, as 

 well as the important diagnostic by which ]\Ir. Babington marks B. in- 

 termedia, viz. "flower-stalks decumbent at the base," a character which 

 appears uniformly constant. Had I been provided with the ' Manual ' 

 at the time, I should not, I hope, have fallen into this inaccuracy. 



J. Barton. 



Hypericum DUBiUM. 



In the article on the Clent HiUs in this month's number of the ' Phy- 

 tologist ' (April, 1858), attention is drawn to the presumed identity of 

 Hypericum perforatum and H. diibium. The author wiU perhaps excuse 

 me if I call his attention to one characteristic that I have found invariably 

 in all plants that I presume to be H. dublum. Around the margin of the 

 leaf is a row of black dots, which appear most distinctly in contrast to 

 the other part of the leaf when held up to the light. This feature I have 

 never seen on the leaves of H. perforatvm. T. W. GissiNG. 



Wakefield, April 19, 1851. 



Pyrus (Sorbus) Aucuparia. 



This tree, the learned Rudbeck (' Atlantica,' t. iii. p. 62) informs us, 

 derives its name, Eon, Roan, or Bowan, from Runic characters engraven 

 on the living tree. 



