LICHENS AND LICHEN. PARASITES

DO'DGE-LICHENS AND LICHEN PARASITE8 263
8-spored; ascospores uniseriate, ellipsoidal, hyaline, walls thick, ~4th spherical protoplasts,
2-celled, 10-11 X 4-5p.
On Cludonia Mawsoni Dodge.
Macquarie Island, north end, Sta. 81, B.A.N.Z.A.R.E. B540-4.
DIDY WOSPHAERIA Fuckel.
Didynzmphaerk Fuckel, Jahrb. Nassau. Vcr. Naturk., 23/24, 140; 1869 [Symb. Myc.].
Perithecia immersed in the substrate, wall dark, at least above, sometimes almost hyaline
below ; ostiole present ; paraphypes preseiit ; asci clavate, 4-8-spored ; ascospores elongate, 2-celled,
brown.
/- -
DIDYNOSPHAERIA KUTTLINQERIAE Dodge, sp. nov.
Type : Crozet Archipelago, Possesssion Island, American Bay, B.A.N.Z.A.R.E. B20-22, on
Kuttlingeria crozetica (Zahlbr.) Dodge.
Perithecia in thecio hospitis immersa, ellipsoidea, 85r altitudine, 55p diametro, nigra ; murus
ca. lop crassitudine, hyphis tenuibus, septatis, periclinalibus, subtus hyalinis, insuper brunneis
nigricantibusque ; ostiolum angustum ; paraphyses ca, lp diametro, septatae, hyalinae ; asci clavati.
ca. 35 X lop, evanescentes; ascosporae brunneae, 2-loculares, pachydermeae, ca. 15 X 4p, elongatoellipsoideae
vel oblongae, cellula superiore paulo longiore crassioreque.
Mycelium of slender hyaline hyphae, scarcely distinguishable from that of the hat. Perithecia
immersed in the thecium of the host, ellipsoidal, 85p tall and 55p in diameter, black above; wall
about 10p thick, of slender, seytate, periclinal hyphae, hyaliile below, becoming darker through
brown to black above, where it is thicker, penetrated by a narrow ostiole : paraphyses about lp ill
diameter, septate, hyaline; asci clavate, about 35 X lop, evanescent; ascospores dark brown,
Zcelled, long ellipsoid to oblong, upper cell slightly longer and wider, about 15 X 4p.
On Kuttlingeria crozetica (Zahlbr.) Dodge.
The systematic position is not wholly clear. In oiie section, there is a suggestion that the tips
of the paraphyses are not free and might be c~nsidered as paraphysoids. Very immature perithecia,
which may be this species, have been seen immersed in the parathecium. In another section
gf the same apothecium is a structure which may be the spermogonium of this species, or it may
be a diff~rent fungus, at it is impossible to trace the mycelium of either very far from the reproductivejfstructures.
, , It is ellipsoidal, 62p tall, 37p in diameter; wall about 8p thick, of septate
pkiiclhal hyphae, brown, somewhat paler below; ostiole broad, about 15p in diameter, filled with
a hyaline gel ; spermatiophores hyaline, about 7 X lp in a dense palisade lining the cavity ; spermatia
ellipsoidal, about 3 X lp. The other specimens referred here are either immature or very
old, but such characters as are observable suggest that they belong here.
Crozet Archipelago, Possession Island, American Bay, on Kuttlingeria crozetica (Zahlbr. j
Dodge, B.A.N.Z.A.R.E. B20-22, type; on Blastemia Johnstmi Dodge, B.A.N.Z.A.R.E. B20-19.
Kerguelen: Mt. Wyville Thompson, on Blastenia kewplasta v. athullina Zahlbr.,
B.A.N.Z.A.R.E. B246-22.
DIDYMOSPHAERIA YACQ~ARIENSIS Dodge, sp. nov.
Type : Macquarie Island, Featherbed Flat, B.A.N.Z.A.R.E. B533-7, on Pyrenodesn~ia
inclinans (Strtn.) D ee.
Perithecia in thecio hospitis immersa; murus ca. 20p ckassitudine, subtus hyalinus, insuper
brunneus nigricansque, crassior ; paraphyses tenues, non-rahosae, apicibus liberis acutisque ; asci
late clavati, ca. 35 X 15p ; ascosporae octonae, hrunneae, 2-loculari, subpachydermeae, ad septum
subconstrictae, cellula superiore grandiuscula, anguste ellipsoideae vel oblongae, 15-16 X 4-5p.