4 ARKIV FÖR BOTANIK. BAND ll. w:o 3. 
about eleven of Lactarius (glyciosmus", luteus”, paludinellus'?, 
repraesentaneus', rufus, subdulcis, theiogalusV, torminosus", 
trivialis", uvidus?, vietus), and about seventeen of Russula” 
slightly rough spores but also a pale variety with strongly echinulate spores 
resembling those of Laccaria tortilis Boup. Icon. mye. I. t. 59. 
! At Vassitjokko, Björkliden, Nuolja, Abisko, Stordalen, Pessijokk. — 
At Torneträsk station I found a dark variety with only a faint or (in some 
specimens) even no smell. This variety has been collected several times also 
at Stockholm, and has always puzzled me as not agreeing exactly with any 
of the species described. As it seems to be well distinct from the typical form, 
it may be regarded as a proper species. Before establishing a new name, 
however, we must clear up its relation to L. mammosus FR. with which it may 
have some alliance, though differing strongly from FRIES” Ic. t. 170. In 
BLyYTT and RosrRuP, Norges Hymenomyceter, pag. 98 is described a var. 
fragilis, which seems to be allied too. Cf. also Lactaria Hibbardae in Bur- 
LINGHAM, Lact. of United States. 
!? Of this species, which is described in BLYTT and RosTRUP, Norges 
Hymenomyceter, pag. 93. I saw but one little specimen (at the railway station 
Kopparasen in 1910). And as I forgot to describe it in the fresh state, I am 
not quite sure of its identity with the Norwegian plant. It had about the 
aspect of a small Russula lutea, just as stated by BLYTT, but my dried specimen, 
which is 14 mm. broad and 15 mm. high, shows under the lens some asperity 
at or near the margin, which is not stated by BLYTT and which seems to indi- 
cate some alliance with L. representaneus. lt grew at the side of a fallen trunk 
of Betula and adhered to the trunk when the latter was turned over, but pro- 
bably it had its mycelium in the ground and not in the trunk. 
13 With some hesitation I refer to this species, described by PECK, some 
specimens collected on Sphagnum at Mjellejokk. 
14 Of this species, named by BRITZELMAYR, I found some few specimens 
at Pessijokk and Torneträsk station. From L. scrobiculatus, to which FRIES 
referred it as a variety, it is sufficiently distinct both by its mild or slightly 
bitter (not acrid) taste and by turning lilac where handled or injured. Whe- 
ther really distinct from Lactaria speciosa BURL. seems doubtful. At all 
events I would prefer, however, to use this name, which is much better than 
the older one. 
!5 At Katterat, Vassijokk, Pessijokk, Torneträsk and Kalixfors. 
18° At Björkliden, Pessijkk and Torneträsk. — On Vuotasreita I saw 
a form with brighter color, which might be referred to L. mitissimus. 
" Noted only at Bjórkliden. — Having not seen this plant before, I first 
suspected L. mitissimus. to which it has great resemblance, but from which 
it is instantly distinguished when injured, the juice turning sulphurous, 
!* Noted at Vassijokk, Björkliden, Stordalen, Pessijokk, Torneträsk and 
Palnoviken. 
18 At Torneträsk and Kalixfors. — At Torneträsk I found also specimens 
with only slightly acrid taste, and at Nuolja I collected a variety with quite” 
mild taste. Perhaps a distinct species. 
20 At Vassijokk and Palnoviken. — Near Vassijokk on the east side, not 
far south from the railway, I found a variety of about the same color as the 
type and also turning lilac when touched or cut, but having a decided smell 
of Humulus both in the fresh and dried state. — At Stordalen among Salices 
I met with a specimen with clay-yellowish color which perhaps might be 
referred to L. aspideus, though the taste was mild. As, however, I do not 
know UL. aspideus from its original growing place, the question can not be 
settled at present. 
21 This species was the most common; it grew abundantly not only on the 
ground but also on rotten trunks. Though I have noted it only from Bjork- 
liden, Pessijokk, Torneträsk and Palnoviken, it no doubt occurs throughout 
the whole birch region. 
?? As I had to pay attention to all genera of Hymenomycetes. it was im- 
