LICHENS AND LICHEN. PARASITES

DODGE-LICHENS AND LTCHRN PARASITES 225
single cavity below the hypothecium, cells 6-9p, protococcoid; parathecium 20r thiclr belou~, of
qlender, thick-walled conglutinate, periclinal hyphae, spreading at the edge to about 75p thick, tips
of hyphae incrusted with minllte yellouv crystals ; hypothecium 3.ip thiclr in the centre, thinning to
the margin, of thin-~~valled, densely u70ven and clovely septate hyphae, becon;ing vertical above and
not sharply differe~itiated froni the thecium ; thecium 110-120p tall, paraphyses slencler, simple,
tips not thirkened, subinoniliform, ending in the epithezial gel, or eomewhat free; asci nearly
cyli~idric at first then clavate in the upper portion as the spores develop, and pushed to the
suri'ace of the epithecial gel by the elongatioil of the lower, sterile portioii of the ascus as a long
stipe, 110-120 X 12-14p at maturity; ascospores inoi~ostichous at first beconling sub-distichoils,
ellipsoidal, polari-bilocnlar, protoplasts small, ist hinus very slentler, 10-13 X 7-8p.
As Zahlbrnclaner has already pointed ont, this species is closely related to Kattlingerie
crozetica. The developmeilt of the thallns is variable on a single roclr, ranging from a well
developed thallus as described above to apothrcia growing directly from thalli of other lichens as
in the follouring v. athallina.
Crowing with Phyl!opyrenia tessellata ancl Bttellia~ .sltbplicnta v. Joannae.
ICerguelen : Royal Sound, B.A.N.Z.A.R.E. B126-5, -~126-22 ; Mt. Wyville Thompson,
1,000-1,500 ft., B.,\.N.Z.A.R.E. B346-22.
BLASTENIA KEROPLASTA var. ATHALLINA Zahlbr.
B. keroplastn var. athdlinu Zahlbr., Deutsche Siidpolar Esp. 8, 50; 1906.
Sn~.philotrrn ttrqu-otrtnt r. obliterntq~nt Wilson, M6m. Herb. Boissier 18, 88; 1900 no11 (Pers.) Kiirb.
Type: Iierguelen, soilth of outlet of Green Lalre between Observatory Bay aild West Fjorcl,
Werth (Deutsche sbdpolar Exp.).
Thalhls rednced to granular, subleprose spots, apricot yellow to buff yellow; granules about
0.5 mnl. i11 diameter, hemispheric, about 0.3 nlm. tall; cortex about 35p thick, capitate fastigiate,
ternliilal cells snbspherical, about 5p in diameter, covered by a gelified amorpholls layer 10lr thick;
algal layer about llOr thiclr, of closely packed cells 10-12r in diameter; medulla of loosely wolTell,
thick-walled hyphae, hlmen about lp in diameter.
Apcthecia abor~t 0.5 mm. in diameter, constricted at the base, lllargiil elevated, disc concave
becoming plane, orange ; algae in irregular colonies, forming a morP or less continuous layer across
the base of the apoth~cium; cortex not differentiated but the outer tips of the hyphae heavily
incrusted with yellowish crystals in the outer lop; paratheciiim highly gelified, of relatively
coarse, tangled hyphae below the hypothecium which become more or less periclinal toward the
edges aiid spread outward and upward, fanwise, to form a parathecium 75p thizk; hypothecinm
35p thick, of thin-walled, closely septate, interu~oven, deeply staining hyphac; tllecium 90-100,~
tall ; paraphyses slender, closely septate, branching dichotonlously above the asci elid ending in the
yello~vish epithecial gel ; asci cyliildric at first, tips thickened, protoplast acute, becoming clavate at
inatnrity, 70-75 X 10-lap, tip remaining thick until late; ascospores distichous, polari-bilocular,
hyaline, 10-12 X 5-6p.
Gro~~~ing with Porina TPerthii, Aspicilia end ochlora, Lecanora atrocaesia, Bqtellia .subplicatu
and l3. tristiqcscula ; parasitized by Thelidiunt.
Crozet Archipelago: Possession Island, American Bay, on lava, B.A.N.Z.A.R.E. B20-2.
1Cel.guelen : Royal Sound, Robert Hall iNnt. Herb. Melbourne Bot. Card.) Murray Island,
cliff on north side, 20-100 ft., B.A.N.Z.A.R.E. B210-5; rocks near shore, foot of nlt. Wyville
Thoiilpson, R.A.N.Z.A.R.E. R246-22.