Cryptogamic botany / by J. Cardot [and others].

Date:
1910
Catalogue details

Licence: In copyright

Credit: Cryptogamic botany / by J. Cardot [and others]. Source: Wellcome Collection.

    112/536 page 78
    In addition to the stations mentioned above, it w^as collected by Dr. Hayes at Prince William Sound and by Dr. Bean at Port Clarence, Alaska, and at Plover Bay, Siberia. On bark and dead wood. Associated with species of Physcia^ Le- canora^ Placodium^ and Pyrenula, 23. Buellia parasema triphragmia (Nyl.) Th. Fr. Lecidea triphragmia Nylander, Prod. 141. 1857. Buellia parasema triphragmia Th. Fries, Lich. Scand. 590. 1871. Orca, 1150 feet (Trelease, 813) , St. Michael (Setchell). New to Alaska. On Almis. The thallus is exceptionally smooth and not limited by the hypothallus. An examination of numerous specimens shows that the thallus is usually smoother when growing on the bark of living trees than it is on decaying trees or on the earth. Widely distributed; may occur anywhere. In addition to the species named above, Rothrock records the follow- ing species as having been collected by Dr. Bean: B. albo-atra (Hoffm. Nyl.) Th. Fr., at Unalaska; B. atro-alba Fr., on St. Paul Island and Unalaska Island and at Plover Bay, Siberia; B. atro-alba chlorospora Nyl., on Chamisso Island in the Arctic Ocean. The two latter species are given by Tuckerman as synonyms of B. col- ludetis (Nyl.) Tuck. J. M. Macoun collected B. alpicola (Nyl.) Anz. at St. George Island, also a Buellia^ species undetermined. Tuckerman records the occurrence of B. par7nelia7‘U7n (Smrft.) Tuck., parasitic on Cetraria fahhine7tsis^ collected by Wright on islands in Bering Strait. LECIDEA. KEY^ TO THE SPECIES. Thallus interspersed with reddish tubercles panceola. Thallus not interspersed with reddish tubercles. Apothecia innate tessellata. Apothecia superficial, or if innate, becoming emergent. Apothecia innate, becoming emergent. Thallus yellowish-white, apothecia medium size coTztigua. Thallus grayish, apothecia very small nigrocinerea. Apothecia alwa}^s superficial. Thallus smooth. Thallus thick. Thallus glaucescent alboccerulesceTts. Thallus orange-red alboccertdesceTts JlavoccErulesceTis.
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