318 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Thallus small, one-leaved, somewhat lobecl and crenate, minutely areola te-papillate, 

 ashy gray or mouse colored; under surface finely granulose, scabrous, naked or very 

 sparingly fibrillose, grayish or blackish; apothecia at length convex, immarginate, 



plicate; spores ellipsoid, colorless, rrrcJ"- 



The above description is compiled, as I have been unable to obtain authentic 

 specimens. Sterile specimens collected in Alpine County, California, by I. A. Lap- 

 ham, were placed under this species (as a variety of hirsuta) by Tuckerman. This 

 species has also been reported by Doctor Hasse from the Tehachepi Mountains, and by 

 Parish from Slover Mountain. 



7. Gyrophora arctica Ach. Meth. Lich. 106. pi. 2.J. 6. 1803. 

 Umbilicaria proboscidca arctica Tuck. Syn. N. Amer. Lich. 1: 84. 1882. 



Thallus from medium size to rather large, one-leaved, thick and rigid, the irregularly 

 crenate and lacerate margin often refiexed; surface varying from granular and nearly 

 smooth to exceedingly rough, pitted and corrugated; color of upper surface in my 

 specimen a dull dirty gray or blackish gray, but in other specimens sometimes a brown- 

 ish or blackish brown; under surface smooth (in some specimens minutely granular), 

 naked, pale, varying from buff or flesh color and yellowish to dusky brown, and some- 

 times slightly pruinose; apothecia small, orbicular or sometimes elliptical, exceed- 

 ingly numerous in my specimen, the thin entire margin soon disappearing and the 

 fruit from fiat becoming finally convex and plicate; paraphyses numerous and slender; 



5 75-7 5 

 thecium blue with iodine; spores colorless, often with a slight halo, ' ' '' ft- 



Here described from the only Californian specimen seen, which was collected by 

 Bolander somewhere in the Sierra Nevada Mountains, probably near Yosemitc. 

 Specimens were also examined from Greenland, Labrador, and Vancouver Island. 

 This plant should bo looked for on all high peaks from Mount Whitney northward. 

 The Vancouver specimens were collected at an altitude of only 1,000 meters but it 

 probably occurs in California only above 2,500 meters. 



8. Gyrophora angulata (Tuck.) Herre. 



Umbilicaria angulata Tuck. Proc. Amer. Acad. 1: 2G6. 1847. 



Thallus small to medium-sized or occasionally rather large, one-leaved, rigid, the 

 surface usually smooth and somewhat polished, but in some specimens the peripheral 

 portion thickly sprinkled with tiny black lumps; color above ashy brown to tawny 

 and very dark brown, or sometimes a purple brown; under surface black, granulate, 

 lacerate at the center, and finally more or less densely clothed with fibrils, these mostly 

 paler than the surface to which they are attached; apothecia at first small and innate, 

 appressed, angulate and stellate, at length convex and variously shaped, with a thick, 

 persistent margin; paraphyses short, slender, but mostly confluent and degenerate; 

 asci variously shaped, the contents more often not differentiated ; thecium greenish and 



bluish, then wine red or tawny with iodine; spores ellipsoid, colorless, ^r™ ft. 



Tuckerman says "fronds (not) surpassing 2 inches in diameter," but a specimen in 

 the National Museum collected by Bolander at Bear Valley has a diameter of 3£ inches. 

 However, it rarely reaches more than half that size. 



Specimens have been examined as follows: "California," Menzies; Bear Valley, 

 Mariposa County, Bolander; Siskiyou County, C. F. Baker; Mount San Jacinto, Dr. 

 II. E. Hasse; Oregon, from the Willey Herbarium; Vancouver Island, Macoun. 



Reported by Tuckerman as having been collected by Menzies on maiitime rocks at 

 Monterey, but a careful search by me has failed to disclose it anywhere in that region. 

 Collected by Doctor Hasse in the Tehachepi Range and in the mountains about Santa 

 Monica. The plant probably occurs throughout the Sierra Nevada Range and north- 

 ward to British Columbia. At Devils Canon, in the Santa Cruz Peninsula, I have 

 found what seems to be a sterile form of angulata; otherwise it has not been met with 

 in that part of the State, 



