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LICHENS AND LICHEN. PARASITES

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DODGE-<strong><strong>LICHEN</strong>S</strong> <strong>AND</strong> <strong>LICHEN</strong> PA~ASITES 51<br />

all invalid reason for changing the name. Segestria is available for Purim in case an Inter-<br />

llatiollal Congress rejects the latter as a nomen genericurn conserz~ondzrm since it contain Porina<br />

qlucula, Ach., the type of the latter i11 Miiller-Argau's emended sense.<br />

Apothecia nlostly immersed in the thallus, wall either light below and (lark above or wholly<br />

dark.<br />

PORINA INSUETA (Nyl.) Muller-Argau<br />

Porina instbeta (Nyl.) Mull.-Arg., Rev. Myc., 6, 20; 1884. Zahlbr., Deutsclle Siidpolar Exp., 8,<br />

51; 1906.<br />

Verrzuaria, iqlszbeta Nyl. in Cron~bie, Jour. Linn. Soc. Bot., 15, 192 ; 1877. Phil. Trans. Roy. Soc.<br />

'<br />

[London], 168, 52; 1879. Rept.,Sci. Results Voy. "Challenger" Bot., 1,2, 241; 1885.<br />

Type : Kerguelen, Swain's Bay, A. E. Eaton (Venus Transit Esp.), also reported from Volage<br />

Bay, A. E. Eaton.<br />

Thallus 110-120p thick, white or stained ochraceous, rimulose areolate, areoles slightly convex,<br />

I

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