LICHENS AND LICHEN. PARASITES

218 B.A.N.Z. ANTARCTIC RESEARCH EXPEDITION
below the hypothecium ; epithecium black ; asci 8-spored ; ascospores ellipsoidal, hyaline, polari-
bilocular. Spermogonia immersed, with a black ostiole; spermatiophores branched and closely
septate; spermatia cylindric, short, straight.
HIJEA DIPI-IYELLA (Nyl.) Dodge, comb. nov.
I,ecnnoro diphyella Nyl. in Crombie, Jonr. not. Rrit. For., 14, 21; 1876 : Jonr. Lian. Soc. Bot., 15,
184; 1876 : Phil. Trans. Roy. Soc. [London], 168,49 ; 1879 : Rept. Sci. Resalts Voy. "Challen-
ger" Bot., 1, 2, 235; 1885.
LecicZ8cc diphyella Hne, Nouv. Arch. Mns. Tr.. 4, 12 ; 1912 [1914].
Blastenia diphyella Zahlbr., Cat. Lich. Univ., 7, 28; 1930.
Type : Kerguelen, Observatory Bay, Royal Sound, A. E. Eaton (Venus T1.an.sit Exp.).
Thallns very thin, pale ashy, stained ochraceons tawny in our material, determinate, usually
with a narrow black margin, especially where it comes in contact with other thalli ; cortex about 20r
thick, decomposed ; algae protococcoid, cells 7-Br in diameter ; the whole thallns ellclosing so many
minute rock crystals that it has been impossible to secure good sections.
Apothecia immersed at first, becoming ~levated, u'rceolate with concave, black disc and
elevated, somewhat inrolled margins, 0.2-0.3 mm. in diameter; parathecium 75p thick below.
thinning to about 20p thick at the margin, carbonaceous; hypothecium not well differentiated;
thecium abont 8OP tall; paraphyses slender, little branched, sparingly septate below, more closely
~eptate abo~e, the outer 34 cells somewhat rounded but tips not or only very slightly enlarged.
eliding in the brownish epithecial gel; asci narrowly clavate, becoming subcylindric, tips not conconspicuonsly
thickened, 35-40 X 10-12p; ascospores hyaline, subdistichons, polari-bilocular,
10-12 X 5-61( in our material, 12-17 X 8-10,~ in type $de Nylander.
On rock with Acrocordia plntyseptata.
ICerguelen: Observatory Bay, B.A.N.Z.A.R.E. B192-10.
HUEA SMARAQDULA Dodge, sp. nov.
Type : Qneen Mary Land, Mt. Barr-Smith, ca. 4,000 ft., C. T. Harrisson A.A.E. 10-2.
Thallns spongiosns, subsphaericus, usque ad 8 mm. cliametro, albidns; algae protococcoideae.
cellulis 8-lop diametro, hyphis medullaribns pachydermeis, ca. 4p diametro laxe contextis.
Apothecia 0.1-0.4 mm. diametro, sparsa vel aggregata, nigra, nlargine prominulo, incurro, dein
non super thecinm prominente, recto, disro plano, nigro; parathecium inferne ca. llOr cras.;itn-
dine, ad latera tenuescens ubi ca. 55p, superne attenuatum, carbonaceum, opacnm, obscure fnscun~,
P
hyphis pachydermeis conglutinatis dense contextnm; hypothecium no11 bene evoluttam; thecium
110-12OP altitudine, smaragdulum; paraphyses tennes, flexuosae, apicibus non incrassatis; asci
angliste clavati, 50-55 X 7-8p ; ascosporae Bnae, polari-biloenlares, hpalinae, 7-8 X 2-3r.
Thallns a spongy mass, subspherical, up to 8 mm. in diameter, white, including many largtl
crystals of the very rotten granite ; algae mostly dead or dying, apparently protococcoicl, cells &1OP
in diameter; mednllary hyphae thick-walled, about 4p in diameter, loosely woven, including solne
colonies of bacteria.
Apothecia 0.1-0.4 mm. in diameter, scattered or aggregated, black, margin prominent
inrolled at firet, finally straight and not extending above the thecium, disc flat, black; parathecium
about 11011 thick below thinning to about 55p on the sides and much thinner at the top of the
thecium, carbonaceons, opaque in thick sections, deep fuscous in thin ones, of thick-walled conglu-
tinate hyphae, densely interwoven, divided into isodiametric cells, hence appearing almost psendoparenchymatous,
becoming parallel and fonui~rg a palisade on the sides; hypothecium scarcely