LICHENS AND LICHEN. PARASITES

DODGF-LICHENS AND LICHEN PARASITES 169
[Spermogonia black, semi-immersed, spherical; wall diinidiate, blaclr; sperniatiopliores
fasciculate, subcylindric; spermatia nearly straight or curved, 9-11 X lP-Zahlbruclrnel-.]
On roclrs with VerruccLria obfuseatu, Tkeliditcnt praevalescens, A"iicrog1aencL kerguelana,
EncephaJographas cerebrine!la, Lecidea asbolodes, L. Auberti,..L. Eatoni, L. intersita,
L. kergtl.elensis, L. phaeostoma, L. rhizocarpiza, L. szcbdisjunguenak, L. sublyg@ntnta, I,. subplana,
L. superjecta, Catillaria8 kerguelensis, ThaEhidima kerguelewis, IWtizocarpon Johnstmi,
R. kergtcelense, R. Mawsoni, Pertusaria cineraria. P. kerguelana, P. szhbperrimosa, Aspicilia
disjungtcenda, A. endochlora, A. lygomma, Lecania Heardensis, Pyrenodesntia vitellinella, Blastenia
keroplasta v. athallina, Kuttlingeria crmetica, BtieQiu subplicada, B. tn'stiuscula and Rimdim
a~picilina.
Kerguelen: Greenland Harbour, B.A.N.ZA.R.E. B177-39, Bl'i742, B177-44, B17748,
B17749, B177-50, B177-51, B177-52, B177-53, B204-7 ; Murray Island, B.A.N.Z.A.R.E. B2104,
B210-5, B212, B530-1, B530-3, B530-6, B530-10 ; Royal Sound, B.A.N.Z.A.R.E. B90-2, B904,
B90-10, B90-11, B90-12, B90-13, B90-14, B12f~9, B126-11, B126-13; R. Hall, Nat. Herb.
Melbourne; Observatory Bay, B.A.N.Z.A.R.E. B192-20,, B192-67.
Heard Island: between Atlas Cove and Coriiithian Bay, B.A.N.Z.A.R.E. B140-6, B140-9,
B140-14, B140-18, B140-27.
i
LECANORA BROCCHA Nyl.
Lecanora broccha Nyl. in Crombie, Jour. Rot. Brit. For., 14, 21 ; 1876 : 15, 104 ; 1877 : Jour. Linn.
Soc. Bot., 15, 185 ; 1876. L. brocel!a8 [typographical error PI Phil. Trans. Roy Soc. [Loadon],
168,49; 1879 : Rept. Sci. Results Voy. "Challenger" Bot., 1, 2, 235 ; 1885.
Lecanora subfusca Hoolr. f. & Tayl., London Jour. Bot., 3, 641; 1844 non Ach. sec. specimen in
herb. Taylor.
Lecanora slcbfusca v. epibryon Hook. f. & Tayl., Crypt. Antarct., 230; 1845: F1. Antarct., 2, 536;
1847 fide Crombie, Jour. Bot. Brit. For., 15,104; 1877.
Lecanora Hageni Tuclr., Bull. Torrey Bot. Club, 6, 58; 1875: in Kidder, Bull. U.S. Nat. Mus., 3,
29 ; 1876 non a.l. [at least for Hooker specimen].
Lecanora subfusca v. Hypnorum hfiil1.-Arg., Rot. Jahrb. [Engler], 3,56 ; 1883 [specimen not seen].
Leca?zora subfusca v. bryontha Wilson, M6n1. Herb. Boissier, 18, 88; 1900.
Type: Kerguelen, Observatory Bay, Royal Sound, A. E. Eaton (Venus Transit Exp.). The
following description based on material available, as I have not seen the type.
Thallus thin, whitish, granular, encrusting dead stems of Azorella, E yellowing. Apothecia
sessile, coilstricted below, margin smooth, white, rather thick, elevated when young, subcrenate,
inrolled, disc chamois to cinnamon rufous, white pruinose, plane or slightly concave ; amphithecial
cortex a palisade of thick-walled, occasionully branched hyphae with very slender lumina, lOOp
thick, highly gelified; algal layer 50p thick, below the thecium, thinning somewhat toward the
margins, cells spherical, up to lop in diameter ; medulla up to 150~ thick, of thick-walled, contorted
hyphae about 5~ in diameter ; parathecium inconspicuous, 6-7p thick, of periclinal hyphae ; hypothecium
20~ thick, of very densely woven, slender hyphae ; thecium 50-75p tall ; paraphyses very
slender, imbedded in the thecial gel, about twice dichotomous above the asci ; asci cylindric, 8-spored,
45-65 X 8-12p ; ascospures unicellular, monostichous, ellipsoidal, 11-12 X 4-5p [15-17 X 6-7p
fide Nylander] , thick-walled.
The thick-walled spores are very suggestive of Pannaria, hence this species may belong in
Psoronza, but in the absence of spermogonia, one cannot be certain.