792 GEOLOGICAL SURVEY OF THE TEREITOEIES. 



Lecidea spilota, Fr. — A single specimen. (40.) 



Lecidea polycarpa, Flk. — A single specimen. (47.) 



Lecidea atro-hrunnea^ (D. C.,) Scbser. (48.) 



Lecidea fusco-atra, (Ach.,) Er. (?) — A single specimen, about which 1 

 um not certain. (49.) 



Lecidea mamillaris, (Gonan Schser.) — On the earth, ^ew to this con- 

 tinent. (50.) 



Lecidea caulescens, Auz. — A single fragment. (51.) 



Buellia myriocarpa^J}. C. — On dead wood. (52.) 



Buellia petrma^ (P\.^) Yar. getninata, (l*5'yl.) — A single specimen. (53.) 



Buellia petrma^ {F\.^) var. Montagnei^ (D. 0.) — A single specimen. (53a.) 



Acolium (?) — Thallus verrncose, the verrucse turgid, glaucescent. 



Apothecia innate-sessile, on the apex of the verrucse, the disk-plane 

 surrounded by a cupula, black proper exciple, with no traces of a thal- 

 lium margin. Hypothecium white. Spores bilocular, .004-23 miu. 

 long, .009-11 min. wide. A few specimens occurred on dead wood. 

 Perhaps a new species. (54.) 



Endocarpon miniatum, (L.) SGh8er.,.var. complicatum, Schser. (55.) 



Endocarpon pusillum, Hedw. — Two or three squamules, on the earth. 

 (56.) 



There are five or six other lichens in the collection, but infertile and 

 insufficient for determination. 



FUNGI. 



Determined by Charles H. Peck, Esq. 



Agaricus geophyllus, Sow. — Teton Canon, July 24. 



Thelepliora terrestris, Pr. — Along the Yellowstone. 



Lycoperdon pyriforme, Scheefi". — Near Yellowstone Lake, August 23. 



Melamsora salicina, Lev. — Head-waters of Snake Eiver, September 11. 



^cidiuni pyratum, Schw. — Head- waters of Snake River, September 11. 



Peziza [Macropodes) vulcanalis, n. sp. — Cup fleshy, funuel-form, stipi- 

 tate, crenate on the margin, smooth when fresh, ragulose and more or 

 less brown when dry ; hymenium pale orange ; stem slender, solid, 

 smooth, brown ; asci cylindrical; paraphyses slightly thickened at the 

 tips ; spores elliptical, smooth, 0.0004-O.OOOG inch long, 0.0003 inch broad. 

 Plant, 6-10 lines high ; cup 4-6 lines broad. Ground. Extinct vol- 

 cano, Snake Eiver, July 16 ; Twin Buttes. 



Hysterium Pi7iasiri, Fr. — Near Yellows^ne Lake, August 23. On pine 

 leaves with the following : 



Sphceria {Byssisedce) GoulteH., n. sp. — Subiculum effused, indeterminate, 

 brown ; perithecia small, gregarious, subglobose, fragile, involved in the 

 subiculum, the ostiole prominent, naked, irregular, rough, black; asci 

 fugacious ; spores uniseriate, uuiseptate, constricted in the middle, 

 colored, 0.0008-0.001 inch long, 0.0003-0.00035 inch broad. Leaves and 

 branchlets of pines. Near Yellowstone Lake, August. The soft, almost 

 cottony subiculum creeps extensively over the leaves, binding them to- 

 gether in masses, and sometimes presenting upon the surface a shining 

 membranous appearance. The perithecia are closely invested by it, the 

 rather large ostiola alone protruding above it. Dedicated to its dis- 

 coverer, J. M. Coulter. 



Glavaria formosa, Pers. — Jackson's Lake, September. 



Geaster Jiygronietricus, Pers. — No locality. 



ALG^. 



Zygnema fontana, (?) — Common in Henry's Pork of Snake Eiver. 



