88. PTERIDIOIDES. 303 



Pliytologist the following description of the places of 

 growth of E(iuisetum Telmateia, evidently summed up 

 from far more than " two or three localities " ; namely, 

 " in marshy or boggy or shady places, wet thickets, hol- 

 lows, by river sides, &c. ; frequent over the Isle of Wight 

 and rest of the county". Every experienced botanist will 

 recognize the correctness of that description. Even Mr. 

 Newman, contending for the accuracy of the name, may 

 be cited against Mr. Newman, trying to sui)port his par- 

 tially impeached statement. On pages 72, 73, of the 

 History, he says that the name Telmateia signifies " grow- 

 ing in mud," and is applicable to this species. No doubt 

 it jls applicable. The species frequently grows in swampy 

 and muddy places, or in hollows holding water at least 

 some part of the year ; although it Avill also grow in 

 places of a much drier character. 



1421. Equisetum umbrosum, Willd. 



Area * ,-^ ****** 9 10 11 12 13 14 15. 



South limit in Chester or Lancaster, York. 



North limit in Moraj', Aberdeen, ? 



Estimate of provinces 8. Estimate of counties 20. 



Latitude 53 — 58. Scottish type of distribution. 



Agrarian region. Midagrarian — Superagrarian zones. 



Descends nearly or quite to the coast level. 



Ascends probably to 200 or 300 yards. 



Range of mean annual temperature 47 — 45. 



Native. Inundatal ? Not having seen this species in 

 its native stations, I am unprepared to state the range of 

 altitude and temperature properly, or even to apply con- 

 fidently the term that would best describe its situations of 



