[Vol. 12 

 304 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



40 (JL beyond the basidia; spores hyaline, cyHndric, V/2-AY1 X 

 2-2Y2 v., copious. 



Fructifications 13^-8 cm. long, 13^-5 cm. wide. 



On bark and wood of Pinus. Finland, Montana, and Manitoba. 

 September to November. Rare. 



The specimen from Manitoba is on bark of a frondose species, 

 but agrees well in other respects with the specimens on pine. 

 The small spores are a distinguishing character of P. sub- 

 cremea. 



Specimens examined: 

 Exsiccati: Rabenhorst, Fungi Eur., 3230, type distribution, under 



the name Corticium lacteum. 

 Finland: Mustiala, P. A. Karsten, in Rabenhorst, Fungi Eur., 



3230. 

 Montana: Anaconda, E. E. Hubert, conam. by J. R. Weir, 12010 



(in Mo. Bot. Gard. Herb., 63370). 

 Manitoba: Winnipeg, G. R. Bisby & I. L. Conners, 1183 (in Mo. 



Bot. Gard. Herb., 59047). 



79. P. admirabilis Burt, n. sp. 



Type: in Burt Herb. 



Fructifications broadly effused, adnate, thin, membranaceous, 

 small pieces separable, becoming cartridge-buff in the herbarium, 

 fibrillose, not shining, even, with but few small cracks, the margin 

 thinning out, with its hyphae loosely interwoven; in section 

 180-240 [JL thick, not colored, composed of suberect, thin-walled 

 hyphae 33/^-4 [x in diameter, not incrusted, of gloeocystidia both 

 elongated and vesicular, and of large chlamydospores ; cystidia 

 cylindric, incrusted, up to 105 X 9 pi, confined to the hymenium, 

 somewhat disorganized by potassium hydrate solution; vesicular 

 gloeocystidia and vesicular spaces up to 45 X 30 [x; chlamydo- 

 spores as seen singly on h^'phal branches are up to 15 X 9 [a; 

 basidiospores white in spore collection, even, 6-7 X 3 [x, borne 

 4 to a basidium. 



Fructifications 3-10 cm. long, 1-2 cm. wide. 



On decaying wood of stump of Ulmus. New York. May. 



P. admirabilis is well marked among our species which have 

 gloeocystidia by the presence of large imbedded spores. 



