[Vol. 13 

 310 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Specimens examined: 

 Oregon : Corvallis, S. M. Zeller, 6800, type. 



CONIOPHORA 



Coniophora corrugis Burt, n. sp. 



Type: in Burt Herb. 



Fructifications broadly effused, coriaceous-membranaceous, 

 loosely attached, separable when moist, between fawn color and 

 salmon-pink to russet-vinaceous, even when dry, somewhat 

 wrinkled when moist, cracking in drying, the margin whitish, 

 byssoid ; in section 300 y. thick, not colored, with a broad layer 

 next to the substratum of slender, loosely interwoven, thick- 

 walled, nodose-septate hyphae about 33^-4 \l in diameter, not 

 incrusted, and with a very compact hymenial layer; no gloeo- 

 cystidia nor cystidia; basidia with 4 sterigmata; spores even, 

 6-10 X 4-7 (a, usually hyaline but when fully mature some at 

 least are colored. 



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



On logs and dead limbs and on living trees of Pinus ponderosa, 

 Abies lasiocarpa y Picea Engelmannii, Juniperus, and Ribes. In 

 mountain forests. Wyoming to Colorado and British Columbia 

 to Arizona. May to October. Common. 



This species is most likely to be referred to Corticium, for it 

 does not produce spores copiously and the few found in prep- 

 arations may be full-sized and hyaline. It was 14 years after 

 the type collection was received before it was demonstrated from 

 a more mature specimen that the spores become colored finally. 

 Several other collections with hyaline spores were received in the 

 interval. C. corrugis may be recognized among our alpine 

 species by its occurrence on the hosts stated, somewhat cori- 

 aceous, loosely attached, vinaceous fructifications, and large 

 spores. The occurrence on living trees, as noted by Dr. Weir on 

 Idaho specimens, is almost sufficient to identify this species when 

 so found. C. corrugis seems related to C. polyporoidea. 



Specimens examined : 

 Exsiccati: Baker, Pacific Slope Fungi, 3570, under the name 



Corticium corruge Burt. 

 Wyoming: Jackson Hole, E. B. Payson, 2369 (in Mo. Bot. Gard. 



Herb., 57369). 



