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140 B.A.N.Z. ANTARCTIC RESEARCH EXPEDITION<br />
minusve applanatis ; dein super basem ad 1 5 cm. dichotome ramosa, decorticata, sine phyllocladiis<br />
cephalodiisque, apicibus dense ramosis, verrucose corticatis cum cephalodiis cerebriformibus<br />
stipitatis et phyllocljidiis brevibus teretibus; cortex fastigiatus, hyphis magnis leptodermaticis,<br />
7-8p diametro, cellulis isodiametricis dein gelifactus; medulla 3540p crassitudine, hyphis circiter<br />
3p diametro laxe contextis cum multis algis protococcoideis in strato subcontinuo, cellulis 5-6p<br />
diametro ; axis chondroideus hyphis conglutinatis, parallelis, pachydermeis, 4p diametro.'<br />
Apothecia maxima parte lateralia (aut terminalia super ramos brevissimos) aut rare<br />
termii1alia, circiter 1 mm. diametro, aut in apothecia composita confl~entia 2.5 mm. diametro, ab<br />
initio convexa, disco obscure brunneo nigricante, biatorina sed immarginata; cortex amphithecialis<br />
cum cortice thallino continuus, coloniae algarum sub apotheciis desunt ; parathecium subbrunneum,<br />
inferne circiter 100p crassitudine, ad marginem tenuescens, margine 20p crasstitudine, hyphis<br />
brunneis 34p diametro, dense contextum ; hypothecium 15-20p crassitudine hyphis subverticalibus<br />
tenuimimis, minus tinctum quam thecium, superne non bene distinctum ; thecium 75p altitudine;<br />
paraphyses tenuissimi, super ascos semel dichotome ramosi, apicibus clavatis cellulis ultimis<br />
sphaericis, obscure brunneis, 5p diametro, epithecium brunneum 7-8p crawitudine formantibus;<br />
asci clavati, 62-65 X 11-12p pachydermaticis; ascosporae 8-nae, aciculares, nno apice obtuso,<br />
altero acuto, 6-8-cellulares, hyalii~e, 3740 X 3-3.5~.<br />
Spermogonia sub apotheciis in verrucis immersis ostiolis nigris, 180-200p diametro, 125p<br />
altitudine, murus obscure brunneus, 10p crassitudine, spermatiophorae 15-18p longitudine,<br />
tenuissimae; spermatia bacilliformia, 5-6 X 0.5p.<br />
Primary thallus not seen. Podetia forming a large pulvinate cushion about 6 cm. tall, sending<br />
a branched rooting system into the crevices of the rock, 2 mm. in diameter, repeatedly dichotomously<br />
branched, the branches progressively smaller; at the base where it leaves the rock, repeatedly<br />
sympodially branched, branches more or less flattened, trunks, branching again about 1.5 cm.<br />
above the base, usually closely once to thrice dichotomous, the upper internodes progressively<br />
shorter, decorticate without cephalodia or phyllocladia below; upper centimetre or less densely<br />
branched, verrucose corticate with stalked, cerebriform cephalodia snd phyllocladia varying from<br />
verrucae to short, branched and terete; cortex fastigiate of large thin-walled hyphae, 7-8p in<br />
diameter, breaking up illto rounded, isodiametric cells and appearing psendoparenchymato~is, then<br />
highly gelified; medulla 3540p thiclr, of loosely wovcn hyphae about 3p i11 diameter, containing<br />
many protococcoid algae in a nearly coiztinuous layer, cells up to 5-6p in diameter; chondroid axis<br />
of conglutillate, thiclr-walled parallel hyphae, -Ip in diameter.<br />
Apothecia mostly lateral (or terminal on very short branches) or rarely terminal, about 1 mm.<br />
in diameter or confluent into compound apothecia 2-5 mm., convex from the beginning, disc darlr<br />
brown, blackening biatorine, immarginate; thalline cortex contiguous with parathecium, algal<br />
colonies absent for some distance below the parathecium; parathecium slightly brownish, about<br />
lOOp thick below, extending between the thalliiie cortex and the thecium as a thin brownish layer<br />
about 20p thick, of densely woven, brownish hyphae 3Ar, in diameter in contrast to the hpaline,<br />
more loosely woven chondroid axis with hyphae incrusted with crystals immediately below; hypothecium<br />
15-20p thick, of subvertical very slender hyphae, less deeply staining than the theciui~~<br />
but not clearly differentiated above ; thecium 75p tall ; paraphyses very slender, once dichotomous<br />
above the asci, tips clavate, cutting off spherical, darlr brown thick-walled cells 5p in diameter,<br />
forming a brownish epithecium 7-8p thiclr ; asci clavate, 62-65 X 11-12p, thick-walled with clavate<br />
protoplast, becoming cylindric, thin-walled with spores filling it at maturity ; ascospores acicular,<br />
with one end rounded, the other acute, 6-8-celled , hyaline, 3740 X 3-3-5p.<br />
Spermogonia immersed in verrucae just below the apothecia, conical ostiole black, 180-200p
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