LICHENS AND LICHEN. PARASITES

134 U.A.N.Z. ANTARCTIC RESEARCII ESI'EDL'l'ION
C. fintbriata ancl as growth becomes somewhat unequal, before proliferation sets in, we have
C. pysidata v. costata of Miiller-Argau aiicl C. fimbriata f. costatu of Crombie. When fully
developed with young proliferations, we have forms similar to C. squamosa v. gracilenta of
Miiller-Argau and when very old, forms similar to the type. None of our specimeiis has the thick
primary thallus nor the impellucid podetia of C. pyxidata.
The last two collections cited below are very young colonies growing over mosses with the
podetia just beginning to emerge from the primary squamule, but seem to beloiig here, although
ill the last cited, the cortex of the primary squamule is less well differentiated and the hyphae
of the medulla have thinner walls and are less characteristically differentiated. The lobes are a
little narrower and sometimes almost terete.
Kerguelen: Christmas Harbour, J. D. Hooker (Voy. "Erebus & Terror") in Taylor IIerb.
at Farlow Herb., Harvard University; Molloy Point, J. H. Kidder (U.S. Transit of Venus Exp.)
in Tuckerman Herb. at Farlow Herb., Harvard TJniversity; Observatory Bay, on dry rocks,
B.A.N.Z.A.R.E. B188-1; Royal Sound, R. Hall, Nat. Herb. Melb. Melbourne; Long Island,
Royal Sound, B.A.N.Z.A.R.E. B168-2 (538), B169-2 (535), B169-3; Murray Island, 50 ft., Sta.
60, B.A.N.Z.A.R.E. B530-8 ; Mt. Wyville Thompson, 1,000-1,500 ft., Sta. 62, B.A.N.Z.A.R.E.
B246-8 (529).
CI-ADONIA FMRIFORMIS Dodge. sp. nov.
Type: Macquarie Island, north end, Sta. 81, B.A.N.Z.A.R.E. 540-9.
Thallus primarius orbicularis, 8-9 mm. diametro, margine integro sublaceratove, viriclis;
cortex superior 35-40p crassitudine, fastigiatus, hyphis non bene conglutinatis contextus, 5-6,~
diametro, apicibus gelifactis; stratum algarum 35-40p crassitudine, coloniis plus minusye confluentibus,
cellulis 7-8p diametro, paucis in basi medullae sparsis; medulla circiter 9OP crassitudine,
hyphis subleptodermaticis, circiter 3p diametro, in parte inferior (15-20p crassitudine)
densius perielinalibus contextis.
Podetia ad 1.5 cm. altitudine stipite 2 mm. diametro, 5 mm. altitudine, scyphis seiisiru
dilatatis, marginibus lacero-lobatis, lobis 5 mm. ldngitudine, 3-6 mm. latitudine, madida impellucida,
verrucosa dein decorticata basi subsquamulosa ; cortex no11 evolutus; stratum algarum
55-65p crassitudine, coloniis discretis, verrucas sorediaque formantibus, cellulis 7-8p cliametro;
medulla non bene evoluta ; axis chondroideus 100-110p crassitudine, hyphis pachydermaticis.
Apothecia sessilia in marginibus scyphorum in lineis coiifluentibus, immatura, circiter
0.2 mtn. latitudine, disco convexissimo ; amphithecium paratheciumque non evoluta ; hypotheciuili
cuneatum, 65p altitudine, hyphis subverticalibus, subbrunneis, leptodermaticis laxe contextis;
thecium non bene evolutum, circiter 25p altitudine; paraphyses tenues, snperne dichotome
ramosae, apicibus clavatis, cellulas sphaericas 3p diametro abjungentibus; asci non belle evolnti ;
sporae anguste ellipsoideae, 7-8 X 3p. Spermpgonia non visa.
Primary thallus circular, 8-9 mm. in diameter, margin smooth, only slightly lacerate, deep
grape green; upper cortex 3540,~ thick, fastigiate but hyphae little conglutinate aiid somewhat
interwoven, walls gelified, 5-6~ in diameter, tips gelified and disintegrating; algal layer 35-40~
thick of more or less confluent colonies, cells 7-8p in diameter, more or less angular, a few scattered
at the base of the medulla which is about 90p thick, loosely woven, of relatively thinwalled
hyphae about 3p in diameter, in the lower 15-2OP, hyphae mostly periclinal, compactly
woven, the outer disintegrating as a pseudocortex with scattered algal cells just above.
Podetia about 1-5 cm. tall, stipe about 2 mm. in diameter, somewhat larger above, about
5 mm. tall, cup gradually dilated upward, margin splitting into lobes about 5 mm. long, 3-6 mm.