[Vol. 12 



304 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



40 {x beyond the basidia; spores hyaline, cylindric, 3%-4:% X 

 2-2J/2 ^, copious. 



Fructifications lJ^-8 cm. long, l}^-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, comm. by J. R. Weir, 12010 



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

 Manitoba: Winnipeg, G. R. Bisby & I. L. Couriers, 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 \L thick, not colored, composed of suberect, thin- walled 

 hyphae 3J^-4 (x in diameter, not incrusted, of gloeocystidia both 

 elongated and vesicular, and of large chlamydospores; cystidia 

 cylindric, incrusted, up to 105 X 9 \i, confined to the hymenium, 

 somewhat disorganized by potassium hydrate solution; vesicular 

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

 spores as seen singly on hyphal branches are up to 15 X 9 y.; 

 basidiospores white in spore collection, even, 6-7 X3[i, 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. 



