LICHENS AND LICHEN. PARASITES

240 C.A.N.Z. ANTARCTIC RESEAnCII EXPEDlTlOS
spores smoke grey to brown, 24-celled or few-celled muriform by division of one or more middle
cells, usually with a thiclr wall, without a gelified sheath (halo) as in Rhizocarpn, especially sect.
Catocarpon, with which they may be confnsed. Spermatia short, straight.
Apothecia lecideine . . . . . . . . . . . . . . . . RueQia
Spores 2-celled, occasionally 1- or 3-celled
Thallus indeterminate . . . . . . . . . . Eubzrellia
Thallus determinate, effigurate . . . . . . . . Diploicia
Spores 4-celled or few-celleci muriform, indeterminate . . . . Diplotontnta
Apothecia lecanoriile . . . . . . . .
Hypothecium dark colonred, spore? polari-bilocular
I-Iypothecium hyaline
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. .
. .
. .
. . Rinodina
. . Orcularia
Spore wall relatively thin, no isthmus; spores small, 2-celled
Thallus indeterminate; apothecia immersed
Thallus effigurate . . . . . .
Spore wall thiclr, often irregularly so
. .
. .
.. -~lelanaspicilia
Beltranlinia
Lumen of spore cordiform or blui~t corniform, spore hyaline until late
Mischoblastia
Lumen of spore round or with rounded angles
Ascospores, 2-celled . . . . . .
Ascospores, 4-celled . . . . . .
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. .
. .
. .
. .
. .
Eurinodina
Pachyspraria
. . Conradia
BUELLIA DNtrs.
Buellia DNtrs., Giorn. Bot. Ital. TI, 1, 1, 195; 1846.
Lecidea subg. Buellia. Harm., Bull. Soc. Sci. Nancy IT, 32, 106; 1898.
Type : Ruellia pnrasenta DNtrs.
Thallus crustose, simple, margins sometimes effigurate, seldom squamulose, attached to the
substrate by the hyphae of the medulla or of the prothallus, without true rhizinae; with a
fastigiate cortex rarely ecorticate or with a pseudoparenchymatous cortex; algae protococcoid;
medulla of reticulately woven, thin-walled hyphae ; occasionally sorediate. Apothecia immersed
or sessile, lecideine, black, withont algae ; parathecium highly developed, carbonaceous and oftell
extending under the hypothecium; paraphpses often capitate, epithecinm dark; asci usually
8-spored; ascospores brown to blacli, ellipsoid to elongate, 2-4-celled, or few-celled muriform
(from division of middle cells in sect. Diploto~nnzn.) with a thick-wall and without a gelified
sheath (halo).
BUELLIA SUBPLICATA (Nyl.) Miill.-Arg.
Buellia subplicata (Nyl.) RZiil1.-Arg., Bot. Jahrb. [Engler] , 5, 138 ; 1884 : Wilson, Mkm. Herb.
Boissier, 18, 88 ; 1900 : Zahlbr., Deutsche Siidpolar Exp., 8, 50 ; 1906 : Bouly de Lesdain, Ann.
Crypt. Exot., 4, 102; 1931.
Lecicleu subplicata Nyl. in Croinbie, ~ onr. Eot. Erit. For., 13, 334; 1875: Jonr. Linn. Soc. Bot.,
15, 190; 1876 : Phil. Trans. Roy. Soc. [London], 168 ; 1879 : Rept. Sci. Results Voy.
"Challenger" Bot., 1, 2, 239; 1885.
Z Bllellia parasetllu Tuck., Bull. Torrey Bot. Clnb, 6, 59; 1875: Kicider, Bull. U.S. Nat. Alns., 3,
30; 1876, non (Ach.) DNt1.s.
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