363 ADDITIONAL SPECIES, ETC. 



rigiclum, and I find that Mr. Bladon j)laces "H. affine, 

 Tausch," under H. rigidum. A specimen from Mr. Nyman 

 of Stockholm, labelled as H. caesium (Fries), is qtiite unlike 

 the ordinary H. mui-orum of English botanists, in its 

 lanceolate basilar leaves, with all their teeth pointing 

 outward and forward. 



H. VULGATUM, Fries. — Nearly the same with H. sylvati- 

 cum (Sm.) of the second volume ; excluding the second 

 and third forms there alluded to, wliich belong to the 

 species, whether single or aggregate, including H. gothi- 

 cum, H. tridentatum, and H. rigidum, of the Manual. 

 The distribution of H. sylvaticum itself is not affected by 

 the severance of those three forms. 



H. GOTHlcuM, Fries. — Judging by the localities of 

 " Hook and Ockham, Surrey, Mr. Watson," given in the 

 Manual, this is a plant which I find growing intermingled 

 with H. sylvaticum ; the two appearing dissimilar enough 

 in their extreme states, and even in their usual states, 

 and yet approximating so closely in some of their exam- 

 ples, as not to be easily distinguished. I cannot hesitate 

 to pronounce the plants of Surrey and N. Hants identical 

 with Swedish sijecimens of H. rigidum (Hartman) received 

 from Mr. C. Hartman (the son), but apparently collected, 

 and possibly also labelled, by Mr. Nyman of Stockholm. 

 Assuming that the name on the labels of these Swedish 

 specimens is correct, and there would seem strong pre- 

 sumption in favour of accuracy, we must make a third 

 special application of the name to English plants ; both 

 the former applications of it being incorrect; thus, in 

 Babington's Manual: — 



H. rigidum (edit. 1) = H. tridentatum (edit. 2). 



H. rigidum (edit. 2) = H. ? 



H. gothicum (edit. 3) = H. rigidum (Hartman !) 



