1913] The Ottawa Naturalist 121 



often 3-7 connate, plane and thinly margined when voung, 

 at length strongly convex and immarginate, disk blackish- 

 brown with the epithecium roughened. Spores ellipsoid, 

 oblong-ellipsoid or cymbiform, one to three septate, 

 14-34 x 3-6 fx, paraphyses distinct, concrete or somewhat 

 lax, bluish-green at the apices, hypothecium reddish-brown, 

 hymenial gel., with I + blue, the color persisting. 

 The species is reported from Port Clarence, Alaska, Green- 

 land and Newfoundland, under the generic synonym of 

 Lecidea of its section Toninia, and from Lake Nipigon, 

 Ontario, Arctic America, Islands of Behring Straits, and 

 from the Canadian Rockies under the name of Biatora 

 artyta. 



Lecidea sublatvpea Leight. Lich. Flora G. Brit. ed. I, p. 271 

 (1871). 



Thallus effuse or sub-determinate, granulate, ashy-fuscous, 

 K , C , Apothecia small (0.5 mm.), sessile, scattered or 

 connate, plane or concave, with a persistent or evanescent, 

 opaque or shining entire margin, disk black. Spores 8, 

 ellipsoid, simple, 12x6.5/*, hypothecium brown, asci 

 ventricose, paraphyses distinct, compacted, tips blackish- 

 green, hymenial gel., with I + deep-blue. 

 Granite rocks. Sidney, Vancouver Island; Prof. J. Macoun. 

 Previously unreported from America. 



Xylographa micrographa sp. no v. 



Thallus hypophlaeous, the hyphema ramifying through the 

 superficial fibers of the substratum, algae Palmella, few 

 and scattered, K , C , Apothecia innate, scattered, 

 parallel with the fillers, small (less than 1 mm. in length), 

 lirelliform or fusiform, accuminate, typically concave, 

 but sometimes plane, with a prominent slightly inflexed 

 margin, or the margin reduced and the disk nearly plane, 

 black. Spores 8, ellipsoid, simple, nebulous, filled with 

 granular protoplasm or developing nucleoli, 11-13 x 7/i, 

 hymenium and hypothecium colorless, asci inflated-clavate, 

 paraphyses distinct, slender, lax, abundant. 

 Old decorticated log. Sidney, Vancouver Island; Prof. J. 

 Macoun. 



The thallus visibly whitens the wood, and is effuse. The 

 internal characters ally the plant with X. parallela (Ach.) 

 Fr., the external with X. hians Tuck.. Type specimen in 

 herbarium Merrill. 



Rockland, Maine. 



