66 
My COLOG I A 
ments agree with those given by Maire, 4-5 X 6-7 /x, much larger 
than those reported in the Sylloge, by Stevenson, etc. 
Pileus 1-2 inches broad, ovoid or globose, becoming companu- 
late and expanded, obtuse, broadly umbonate, villous-silky, dry, 
not striate, fimbriate on the involute margin, white ; flesh solid, 
white or with a tinge of pink; lamellae slightly ventricose, atten- 
uated in each direction but somewhat broader in front, free, white- 
floccose on the edges, becoming pink and finally reddish with 
spores ; stem about 2 inches long, 2-3 lines thick, slightly bulbous 
at the base, equal or somewhat attenuated upward, solid, white, 
fibrillose ; volva white, covering the bulbous base of the stem, 
free margin short, lobed ; spores pink to reddish in mass, ovoid or 
ellipsoid, 4-5 X 6-7 /x, membrane thick, vacuoles one or two ; 
basidia club-shaped, enlarged below the apex, 7 X 30 /x, contents 
granular ; cystidia numerous especially on the edges of the lamel- 
lae, ventricose, accuminate above with a cylindrical obtuse apex, 
8-15X45-70/1^. 
Parasitic on Clitocybc ncbnlaris. 
Quelet considered V olvaria Loweiana, as a luxuriant parasitic 
form of V olvaria plumidosa Lasch. The latter grows on the 
ground among humus in fir woods. Maire, who has studied both 
forms, agrees as to the identity of the two species, though he finds 
some minor differences between them. The most important dif- 
ference is that the spores of V olvaria plumidosa are a little 
broader and shorter than those of V olvaria Loweiana but, as both 
Patouillard and Britzelmayr give the spore measurements of V ol- 
varia pliimtdosa fully as long as those of V olvaria Loweiana, he 
concludes that the size of the spores may be variable. IMaire 
gives photographs of both the parasitic and terrestrial form. The 
group includes V olvaria Loweiana (Berk.), V olvaria plumidosa 
(Lasch), V olvaria parvula var. major Wein., and Volvaria hypo- 
pitys Fries. 
I collected plants of this group on the ground under coniferous 
trees at Frankfort, Mich., in August, 1911, but did not secure a 
photograph of the fresh plants. The dried specimens are shown 
in pi. 777, /. C. They agree with Volvaria plumidosa as described 
and illustrated by Maire. The plants were white with a villous, 
silky pileus, even, not striate on the margin. The stem was silky- 
fibrillose, solid, slightly bulbous at the base, where it was covered 
