LICHENS AND LICHEN. PARASITES

DODGE-LICHENS AND LICHEN PARASITES 91
Type: Kerguelen, Observatory Ray, Volage Ray and Swain's Bay, A. E. Eaton (Venus
Transit Exp.) .
Thallus very thin, growing over the thallns of L. lcergzielensis forming small darlr grey
patches about 1 cm. in diameter, rimose areolate, K-, about 200p thick, uppcr 4OP of closely woven,
subvertical hyphae, below more loosely woven and with somewhat larger hyphae; algae protococcoicl,
cells 45p in diameter; medulla filled with rock crystals. Apothecia immersed in the
areolcs, ny to 0.3 mm. in diameter, disc plane, tawny-olive when moistened, drying nearly black
and very slightly concave, somenrhat irregular in shape, completely immarginate; amphithecium
and parathecium lacking; hypothecium carbonaceous, lentiform, 140p thick in the centre; thecium
75p tall ; paraphyses slender, flexuous and branched but not anastomosing, upper 4-5 cells moniliform,
not thickened at the tip, fuliginons in the upper 15p; asci clavate, 8-spored, 4045 X 25p,
greatly thickened at the tip wl~en young ; ascospores distichous, appearing 1-scptate,
10-12 X 4-5/L.
It is with some hesitatioii that I have referred this material here as Crombie states that the
thallus is continuous, K yellow and that the tips of the paraphyses are bluish-black; however it
agrees in other characters so far as given. It may be the unnamed form described by Zahlbruckner,
1.c.
Growing over Lecidea kergtcele~~sis and with Verrucaria Werthii, Lecidea s~cbdisjzcngue.nda,
Rhizocarpon kergueltwe, Pert?csa& cineraria, P. kerguelam, Aspicilia endochlora, Leca.wra
atrocaesia, Buellia subplicata, and B. tristizucrcln.
Kerguelen: Observatory Bay, B.A.N.Z.A.R.E. B192-6, B192-23; Mt. Wyville ~hom~son
300-500 m. Sta. 62, R.A.N.Z.A.R.E. B246-4; Royal Sound, B.A.N.Z.A.R.E. B9O-5; llpper end
of Crcenland Harhour, B.A.N.Z.A.R.E. B177-25, R177-27, R177-28, R177-29.
LECIDEA KERGIUEIAENSIS BOU~Y de Lesdain.
Lecidea kerguelewis Bouly de Lesdain, Ann. Cryptog. Exot., 4, 96; 1931.
Type: Kerguelen, Mt. P. Termier, 600 m., Aubert de la Rue 10.
Thallus pale vinaceous fawn, IC yellow, Ca-, KCa-, surface dnll, smooth, riinose areolate,
especially about the apothecia, about 600p thick; cortex decomposed with crystalline niatter, of
more or less perpendicular hyphae; algae protococcoid, cells P5p in diameter. Apothecia innate,
0-4-0-6 mm. in diameter, scattered or crowded but not confluent, being separated by a margin
of thallus and a crack, but more or less angular, disc plane, black; parathecium 18-20p thick at
the margin, hyaline, of vertical closely septate, somewhat moniliform hyphae, shading through
fuscous to carbonaceous below the hypothecium, where it is patcriform, about 150p thick, pro-
longed downward at the centre into a stipitiform projection, and sending oilt fuscous rhizinal
masses between the crystals of the rock; hypothecium not differentiated from the parathecium;
thecium 75p tall; paraphyses very slender, flexuous, once or twice dichotomously branched,
sparingly septate below, ending in a chain of about 5 spherical cells 2p in diameter, forming the
epithecium ; asci clavate, 55 X 8p, protoplast truncate with a slight papilla when young,
8-spored ; ascospores subdistichous, subfusiform but slightly constricted in the middle and appear-
ing septate, 12-15 X 4-6p.
My material may belong in Catillan'a. 'I have been unable to satisfy myself whether it is a
case of deeply staining protoplasm occupying the centre of the spore or whether there is a true
septum. Young spored in the ascus are slightly smaller and unicellular but with a deeply stain-
ing equatorial mass. This species differs from material referred to liecidea Eatoni in somewhat
larger, less ellipsoid spores and thinner parathecium below the hypothecium. Both may belong
in Catillaria.