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D.A.N.Z. ANTARCTIC RESEARCW IZXPEDITION<br />
STEIXERA GLAUC~LA (Tuck.) Dodge, comb. nov.<br />
Pnnna.ria gla.ucella. Tuck., Bull. Torrey Bot. Club, 6, 57; Oct.., 1875. Bull. U.S. Nat. Mns., 3, 28;<br />
1876.<br />
Lecnnora ntelanaspis Hook. f. & Tayl., Cryptog. Antarct., 230; 1845. F1. Antarct., 2, 536; 1847.<br />
ilon Ach. [fide Crombie, Jour. Bat. Brit. For., 15,103; 1877 excl. Babingtoii's syn. of Lecanora<br />
dichroa Tayl .I.<br />
Amphidiunt ntolybdoplioezint Nyl. in Crombie, Jour. Bot. Brit. For., 13, 333; Nov., 1875.<br />
Anrpliiclizrnl ntolybdoplrrcun~ Nyl. in Crombie., Jonr. Linn. Soc. Bot., 15, 181 ; 1876 [spelling cor-<br />
rected]. Jour. Bot. Brit. For.. 15, 103; 1877. Phil. Trans. Roy Soc. [London], 168, 47;<br />
1879.<br />
Amphidium molybdophlacum Nyl. in Crombie, Rept. Sci. Results, Voy. "Challanger" Bot., 1, 2,<br />
232; 1885.<br />
Leptogiunt molybdoplacz~nt Stzbgr., Ber. Thatigk. St. Gall. Naturw. Ges., 1889-90,237 ; 1891.<br />
Steinera ntolybdoplaca Zahlbr., in Engler and Prantl, Die Nat. Pflanzenfam. I, le, 166; 1906.<br />
Deutsche Siidpolar Exp., 8, 43 ; pl. 4, fig. 13-14; 1906.<br />
Type : Kerguelen, Molloy Point, J. H. Kidder (U.S. Venus Transit Exp.) in Tuckerman Herb.<br />
The type of Amphicliunt ntoll~bdop'aczim was based on Kerguelen, Swain's Harbour, A. E. Eaton<br />
,Venus Transit Exp. ) .<br />
Tliallus adnate to the substrate, areolate sqnainose in the centre, margin lobate (habit of<br />
Coccocarp.'a pellita) up to 4 cm. in diameter, but several thalli sometimes confiuent, forming much<br />
larger patches and nearly covering the surface of the pebble, between vinaceous buff and olive buff<br />
in lighter specimens to olive brown in most of the older specimens ; marginal lobes mostly 4-5 min.<br />
long, somewhat cuneate ultimate lobes about 1 mm. wide (one specimen with lobes up to<br />
1 cm. long and 2 mm. wide, nearly linear) ; about 400~ thick, pseudoparenchymatous, basal<br />
hyphae periclinal, curving upward and carrying the filaments of Calotl~rix with them until<br />
they are vertical in the greater portion of the thallus; outer layer about 50p thick without<br />
algae, giving the appearance of a pseudoparenchymatous cortex, outer cells somewhat<br />
brownish. Apothecia urceolate in warts on the areoles, disc reddish brown, lecanorine; amphithecium<br />
150~ thick, of the same texture as the thallus; no parathecium; hypothecium<br />
obconic, 75p tall, about 170p in diameter, similar to the thallus but looser in texture and without<br />
algae ; thecium 110-120p tall ; paraphyses filiform, sparingly dichotomous below, closely so above,<br />
tips clavate; iisci clavate, 8-spored, 70 X 10-12p; ascospores ellipsoid, 4-celled, thin-walled, not<br />
constricted at the septa, 18-20 X 7-8p. Spermogonia ovoid, 250 X 180-200pl wall very thin<br />
and scarcely differentiated, but deeply stain'ing; spermatiophores closely septate, densely<br />
dnched; spermatia bacilliform, 3-54 X lP.<br />
On rocks with Verrucaria kerguelensis, V. obfuscata, Microglaena Mawsoni, Xanthoporina<br />
kerguelensis, Porina insueta, Physma kerguelense, Lecdea subdisjunguenda, Mykoblastus<br />
stephanodes, Pertusaria cineraria, P. Werthii, Aspkiliopsis mcrophthalma and mosses.<br />
B177-19 and B217-2 are evidently immature, spores still unicellular and the tips of the paraphyses<br />
not clavate.<br />
Kerguelen, Molloy Point, J. H. Kidder (U.S. Transit of Venus Exp.), type; Royal Sound,<br />
B.A.N.Z.A.R.E. B126-10; Greenland IIarbour, upper part, B.A.N.Z.A.R.E. B177-1, B1774,<br />
R177-13, B177-18, B177-19; near Port Jeanne d'Arc, 1,400 ft., B.A.N.Z.A.R.E. B200-2;<br />
&It. Jeanne d 'Arc 1,600 ft., B.A.N.Z.A.R.E. B217-2.
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