Wheldon : The North of England Harpidia. 



8 9 



basilar consisting" of a mixture parenchymatous and prosen- 

 chymatous tissue. 



Mpns. Renauld considers this to be connected with the type 

 and the succeeding' variety by intermediate forms ; it resembles 

 the former in the length*of its cells and leaves, and the latter in 

 its sterility and partly parenchymatous areolation. Mr. Holt, 

 who has paid much attention to this group, considers that it is 

 certainly a form of H. intermedium rather than H. revolvens. 



8. Kinder Scout (57), Holt. 



9. Southport (59), Holt (teste Sanio). Birkdale (59), a 

 somewhat intermediate form, Wheldon ! ! Upper Roeburn- 

 dale (60), Wheldon and Wilson ! Docker (60), A. Wilson ! 



12. Loughrigg (69), Gore ! Cans wick Tarn, Kendal (69), 

 Waddell ! High Street, Mardale (69), A. Wilson ! 



Forma falcata (Sanio) Ren. Glossy, spadiceous to yellowish- 

 green. Stems elongated, slender, rather rig-id and wiry, some- 

 times denuded of leaves below, sparingly branched, branches 

 subpinnate, falcate. Leaves distant, from an erect-falcate base 

 narrowed into a very long, slender, patent, distantly-dentate 

 point, secund, strongly falcate, but not at all circinate, except 

 very occasionally at the tips of some of the branches. 



9. Udale (60), Wheldon and A. Wilson. 

 12. Widdy Bank Fell (66), Ingham ! ! 



I have seen no description, nor have I been able to find 

 any reference to H. Cossoni forma falcata Sanio. The above 

 description is from a specimen so named by Mons. Renauld, but 

 it appears to be very different from Sanio's H. intermedium 

 verum fatcatum. That is evidently an intermedium form, and 

 this is just as certainly more nearly related to var. Cossoni. It 

 would appear that there are in reality analagous forms of these 

 two closely-related varieties. Mr. Dixon holds that H. Cossoni 

 and intermedium intergrade, which is no doubt the case. Mons. 

 Renauld also emphasises this view, but keeps them distinct. 

 The extremes are easily recognisable, and it is convenient for 

 purposes of reference, and to facilitate further study, to have 

 names for forms which keep recurring, although it appears to 

 be almost impossible to satisfactorily describe them. Some of 

 the forms which are most distinct and easily recognisable in the 

 field are extremely difficult to separate on paper. 



Var. intermedium (Lindb.) Ren. (H. intermedium Lindb.). 

 Dioicous or sterile, rarely fruiting. Tufts yellowish-green, green 

 above and brownish below, or sometimes more or less fuscous 

 throughout. Stems less robust than in the preceding, simply 



1902 March 3. 



