646 



dense — densiuscule floccis laxis obsitis, pilis brevibus obscuris 

 sparsis et sub involucris glandulis sparsis obtectis. — Involucra, 

 brevia. 10 — 12 mm. longa, canescentia, basi ovato-truncata, squamis 

 extimis linearibus — lineari-lanceolatis obtusiusculis, intermediis 

 triangulari-lanceolatis subacutis, interioribus e basi lata ovato-lan- 

 ceolatis, subito in apicem + acutum attenuatis, marginibus densiu- 

 scule - - dense dorso sparsius floccis laxis obsitis, pilis brevibus 

 basi crassa nigra apice brevi albo + dense vestitis et glandulis + 

 densiusculis — sparsis brevibus paullum conspicuis obtectis. — 

 Calathium 35—40 mm. diametro sat radians, ligulis sat latis den- 

 tibus longis augustis præditis, stylo badio-fusco. 



Kalso: Mygledal (J.Hartz and C.Ostenfeld). Flowering and fruiting, 

 August 3, 1897"! 



It is difficult to say anything defmite as regards the systematic 

 place to be assigned to this form. In various points it reminds one 

 of some Færoese forms which I have referred to Vulgata, viz. H. con- 

 strictiforme, H. cordatifrous, etc. It agrees with these forms more parti- 

 cularly as regards the structure and the clothing of the involucres. 

 The relatively small size of the latter seems also to suggest a closer 

 relationship to Vulgata. It possesses, however, several characters — 

 such as the numerous, long and distinctly toothed hairs on the 

 leaves and, especially, on the petioles and the base of the stem, 

 and the loosely adpressed stellate pubescence composed of com- 

 paratively large hairs — which point to a relationship with Cerin- 

 thoidea. It is remarkable that within the northern area of di- 

 stribution of this group of forms, viz. in England and in Scot- 

 land, a good many forms occur, which resemble the true Cerin- 

 thoidea, some in one point some in another, but in several respects 

 approach sometimes Vulgata and sometimes Nigrescentia, and re- 

 mind one also forcibly of Oreadea. Similar forms have also often 

 a decidedly siluaticum- or cæsium-habit. The usually well-delined 

 structure of stem-leaf in Ceriuthoidea with broadlv winged petiole, 

 auriculately enlarged, and half-clasping at the base and with the 

 blade suddenly attenuate, is much less conspicuous in this northern 

 group of forms. The petiole itself, or tbe base of the leaf or petiole 

 may sometimes be seen to be somewhat enlarged in several forms 

 of Oreadea and Nigrescentia, but rarelv in Vulgata. It is, therefore, 

 rather interesting, that in the Færoese forms menlioned above, which 

 I refer to Vulgata, the same peculiarity is met with, often fairly well 



