1 Jury, 1899.] QUEENSLAND AGRICULTURAL JOURNAL. 89 
Lecidea (Buellia) subrepleta, Strn. hallus pallid, thin, fractured into small 
tile-like plates (IX- C-); apothecia sessile, black, mediocre, flat, at first margi- 
nate, then conyex and immarginate ; spores 2-, 4-, 6-, usually 4, brown, ellipsoid, 
or obtuse-fusiform, 1-septate, ‘08 —-04 x ‘011 —-014 mm.,; paraphyses slender, 
distinct, filiform, irregular, branched, towards the apex, brown, and club-shaped; 
hypothecia thick, brownish-black. Hymenium with iodine slightly cerulescent ; 
thece brownish. On bark. 
The thick mass of the hypothecium, or rather perithecium, is very apt to 
separate from the hymenium proper and leave a thin fuscescent, at times nearly 
colourless, hypothetical layer. ‘This lichen is evidently allied to L. parastata, 
Nyl., Lich. Noy. Caled., but the spores are larger, only 4,for much the greater 
part, instead of 8 in thecw, and the paraphyses are filiform and branching, &c. 
There is another Zecidea which has several characters very nearly identical 
with those of the preceding, but which has peculiarities such as to entitle it to 
a specific place. The following description has reference to another specimen 
by the late Mrs. Heywood McEwen, who gathered it, in 1892, in a locality 
about 60 miles westward of Brisbane. ? 
Lecidea (Buellia) subconnexa, Strm. Thallus whitish or pallid, thin, minutely 
fractured in tile-like plates (KX yellowish); apothecia black, at first innate, and 
indeed often thalline-clothed, at length superficial and obtusely margined, finally 
somewhat convex ; spores 8 in saccate theex, brown, ellipsoid, with a single 
loculus at each pole, (02 — ‘027 x -01 —:013 mm.; paraphyses slender, distinct, 
apices black and clavate ; hypothecium slightly fuscescent or almost colourless. 
Hymenium with iodine lightly cwrulescent, at length vinose-fulvescent, especially 
the theee. On bark. 
I haye neyer seen any lichen having such curiously shaped yet sharply 
defined nuclei. The sharp delineations are blurred by age. 
Another Buellia under this division was lately picked out of No. 86 of a 
former collection by Mr. Bailey, the internal organisation of whose spores 1s 
nearly identical with the second, but more especially with the third figure as 
given above. ‘ 
Lecidea (Buellia) restituta, Strm. Thallus whitish or pallid, minutely and 
conversely areolate (IX yellowish); apothecia innate, at first clothed by the 
thallus, finally black, flat or somewhat convex, faintly margined, mediocre ; 
spores 8, brown, ellipsoid or oblong—ellipsoid, often slightly curved and polari— 
bilocular with short tubules, 1-septate, nucleate, -024— -034 x -009 — ‘012 mm.; 
paraphyses slender, fairly separable, apices black and clavate; hypothecium 
blackish-brown. Hymenium with iodine intensely cerulescent. On bark. 
There is certainly a close connection between the three preceding lichens, 
but, as the differences indicated are constant, it is as well to state them openly 
and leave to future investigations the task of showing whether such distinctions 
have physiological significance of sufficient importance to warrant them being 
retained as distinct species or the reverse. 
Pyxine obscurior, S¢r., described in the Proceedings of the Royal Society of 
Victoria, 1881, hasa peculiar hypothallus. Itis smooth, even glistening in places, of 
a pale fulvescent colour, and with few or no rhizing, This hypothallus is not firmly 
adherent to the bark, and the whole thallus may be easily stripped off it. All this 
inclines me still to rank it under the genus Pywine. The reactions of the white 
medulla by K—viz., yellow, then a deep red—are, however, so unique in this 
genus that there has lately arisen a doubt. After making this statement, I must 
leave the determination of its generic place in abeyance at present. The only 
other possibility is association with the Buellie, which we have just had under . 
consideration. ‘ 
Arthonia subcondita, Strm. ‘Thallus whitish oy pallid, thin; apothecia black, 
punctiform or maculiform, minute, rotund or somewhat irregular, flat, spores 8, 
in saceate thece colourless, obovate, 7 — 11 locular, 027 — 035 x 011 — 014mm. ; 
paraphyses seldom visible; hypothecium colourless. Thecw with iodine vinose- 
violaceous, while the spores take a lutescent tint. On bark. 
