—86— 



On trees, Mission Ridge, Santa Barbara; altitude about 240 meters. Re- 

 ported by Dr. Hasse from near Santa Monica. Originally described by Acha- 

 rius from olive trunks in Spain, and widely distributed, though not often rec- 

 ognized by American writers. Probably native to all the southern half of 

 California. 



Alectoria oregana Nyl. Lich. Jap. Obs. II. 104. 1890. 



Thallus erect and shrub-like or sub-pendulous, 3. to 5. cm. in height, ces- 

 pitose and usually forming densely matted clumps so that the length of the 

 plant is not easily determined, slender, weak, irregular, more or less angulose 

 and much contorted, with smooth, shiny epidermis, branches frequent, their 

 tips filiform and pointed, various shades of greenish or reddish brown, basally 

 much paler, the upper portion often much darker, becoming blackish brown; 

 no chemical reactions. Apothecia 2 to 7 mm. in diameter, lateral, sessile, at 

 first circular and concave, but later becoming strongly convex or domelike, 

 disk shining chestnut brown; receptacle roughened, tuberculate, and usually 

 ciliate, the fibrils pointed, not numerous; thecium and hypothecium colorless; 

 epithecium broad, dark brown; asci short, clavate, 23 to 2^ijl long and 7 to 8.2yu 

 broad; thecium blue with I, and according to Nylander changing to fulvescent, 

 but not so in my material; spores simple, colorless, short ellipsoid to almost 

 globose, 3 to 4. 5m broad and 5 to G/j, long. 



Rather common on Pinus ponderosa, mingled with Nephromopsis platy- 

 phylla and Parmelia enter omorpha, on Mount Hamilton, Inner Coast Range; 

 altitude about 1200 meters and above. I have also examined material from 

 San Jacinto Mountain, where it occurs at an altitude of 1540 meters on Pinus 

 ponderosa, and from Shasta county near Forestdale, on Pseudotsuga taxifolia. 

 It has been collected by Dr. Hasse in the San Gabriel Range near Los Angeles, 

 and in the Tehachepi Range. 



A species found on the bark of living conifers and originally named by 

 Tuckerman from material collected in Oregon, though the only published de- 

 scription is by Nylander. Especially distinguished by its apothecia which are 

 ciliate like those of Usnea. 



Caloplaca cirrochroa (Ach.) Th. Fr. Lich. Scand. 1: 171. 1871. 



Lecanora cirrochroa Ach. Syn. Lich. 181. 18 14. 



Placodium cirrochroum Tuck. Syn. N. A. Lich. 1: 171. 1882. 



Thallus orbicular, closely appressed to the substratum, similar to C. muro- 

 rum but smaller and usually thinner; centrally orange yellow and darker, in 

 our specimens a yellowish brown, with lemon-colored soredia, often warty 

 crustose or disappearing, except the radiate, narrowly and intricately laciniate 

 efiigurate margin, tips of the narrow radiate lobes usually white pruinose, turn- 

 ing purplish with KOH. Apothecia very rare and minute, scattered, plane, 

 orange yellow with sub-entire margin; spores 5 to G/j. wide and 13 to iS/j, long, 

 our scanty specimens sterile. 



Rare; on rocks at Alum Rock Park, in the Mt. Hamilton range, at an alti- 

 tude of about 150 meters. A European lichen of calcareous rocks, collected 



