224 
Tine LAKGKK FUNGI 
KEY TO THE SPECIES. 
Entii'i'ly i'('supinat(“, biin'-coloureil, I’oiia-like .. .. ■'!44 
and .")45. Irpex obliqwuf:. 
Usually t'oniiint;' thin lirackots, about lliii. laterally. 
Piloi strit;'ose, pallid to cinnarmm bull, becondiig srey 
to (lark brown. Oiifiocs bister with a violet tint. 
('onte.xt pallid to drab 1 rpe.xdike forms of 
Polpstictus vematilis. 
Korriung- small |)at(dies of de(‘urrent pinkish buff to 
cinnamon buff tula's with occasional traces of a dark 
grc'yisli brown ufiper .surface d4(>. Irpex epitephruti. 
M44. Irpex oblicimis (Schrad.) Ur. (L., ohlUiu-un, oblitpie). — Colour dcei)or than 
Pinkish Bulf fxxix.), ai)proaching Cinn;imon Buff (xxix.), or Light Ochraceous 
Bulf (XV.) iiassing into Cinnamon Bulf, wlum young whitish, creamy white, or 
[lallid, deepening in colour on drying, inegularly effused with an indefinite felted 
sterile edge of the same colour or slightly paler, rarely whitish, not readily 
S('pa.rable from the substratum, puidyv-friable, often many inches in extent and 
sometimes with outlying scattered masses. Thi('kn<>ss up to 1 mm. Pore mouths 
about O.ti to 0.4 mim, occasionally 0.5 to 0.7 mm. and once 1.125 mm. wide when 
growing horizontally, just readily seen by the naked eye, larger and coarser and 
more irpiciform when growing vertically or the dissc'piments then appearing as 
liiu'ar irregular plates, the dissepiments fluted when obli(|ue. When horizontal, 
the pore mouths vary in size, often with a. few considerably larger than the 
others. About 4 por<( mouths, sometimes 2 or d, in a length of 1 ram. when 
growing horizontally. Edges of the pore-mouths irregular, jagged, often plate- 
like, more or less finely setulose, septa sometimes imperfect. Depth of pores 
about 0,5 to 0.75 mm. Spores slightly yellowish, oval or pear-shaped flattened on 
one aide, with an obli(iu.e api.culus ami a central globule, 5 to 7 x 2.5 to 4 g, 
usually about 5.0 to 0 x .'1.5 g. lly|ilia.e faintly tinted, rather irregular, sometimes 
ribbon-like, thick-walled, occasionally septate, 2.5 to 4 g, occasionallv 4.5 g 
South .Australia — .Adelaide and subuibs, Mount Lofty Ranges, National Park, 
Kuitpo, Mount (kniipass, Ashbouriu', Encounter Bay district. Mount (lambier, 
Quoin. New South Wales. Victoria, Tasmania. W'estern Australia. New 
Zealand. Europe, etc. d'hroughout the year. 
'Plus is a common and variable Australian species found growing on the rough 
bark of many of our Eucaly|its and on fallen branches, liark, and wood. AA’hen 
growing vertically, tiu' irpicoid arrangemc'nt is clearly shown, anil as the majority 
of sfiecimens are in a more or less vertical position, the irpex form of the jilant 
is a common one. Sonietinu's on the underside of a log is grows horizontally, 
and then it would be classed as a Poria, though even thus tlie pore mouths are 
rather plate-like and jagged. Amongst our specimens, chiefly collected in New 
South AVales and South Australia, we find that in addition to the irpicoid and 
poria forms, what ap|i('ars to iie the same specie's may sometimes grow on a rough 
uneven surface as little projecting knobs, and the pore mouths on these knobs 
may show' a labyrinthif onn or fluted arrangement with the dissepiments defective 
in ])la.C('S. This is evidently meri'ly a growth form and not a variety, as normal 
growth and the labyrinthiform knobby one, or a labvrinthiform arrangement 
without knolis, may occur on the same piece of wood. The colour also varies 
somewhat in depth, (kinsidering the variability, it may be well to state in broad 
tei'ins as a. guiile to other colU'ctors what ty)ies of plants we would place under 
Irpex ohlupmu. Kesupinate irpiciform, or poria-like fungi, indeterminate and 
ofti'U ('xtensive, in colour near Pinkish Buff, Cinnamon Buff, or Light Ochraceous 
Bull', with a. felted sterile edge sometimes extensive of the same colour or slightly 
pah'i- but not pure white, thin (up to 1 mm.), adherent, the tubes somewhat 
variable in size but mostly 0.2 to 0.4 mm. in diameter, 2 to 4 in I mm., irpiciform 
or ih'liniti'ly poria-like but if the latter with thin dissepiments tending to be 
lacerated and the mouths more or h'ss s('tulose, spore.s 5.2 to 7 x 2,5 to 3.8 g, 
usually 5.5 to 0 x .'1.5 g. 
M45. Irpex obliqinis var. argUlaeco-eimuimone'Ux Rodw. et Clel. (L., argillaccvs, 
made of wdiite clay, here clay-coloured; chmamoneiis, cinnamon-coloured). — A 
\a.ri('ty with the pores becoming Clay C'olour (xxrx.) or deeper and a pale edge, 
the gmieral apiiearance rattier coarse, pore oritices 0.2 to 0.4 mm. South Australia 
— Alount Lofty. New South AVali's. .lune, November. 
