1 Noy., 1899.] QUEENSLAND AGRICULTURAL JOURNAL. 485 
The spores are well-developed, and are very peculiar, almost anomalous. 
They are distinct in outline, but there is no definite epispore. The nuclei or 
sporules, as they must be called, are merely embedded in a clear hyaline gelatine, 
which, however, retains its cylindrical as well as its curved shape, even under 
<onsiderable pressure. The sporules refract light strongly. 
The specimen in possession is small ; only about half an inch in diameter. 
Collema byrsinum, Ach. 
Leptogium tremelloides, #7. 
Leptogium phyllocarpum, var. isidiosum, Vy. 
Calicium quercinum, var. lenticulare, Ach. 
Thysanothecium Hookeri, Berk. and Mnt. 
Cladonia cariosa, Fik. 
Cladonia fimbriata, var. chordalis, #7/.—= var, subcornuta, Nyl., and var. fibula, 
HH ffm. 
Cladonia aggregata, Hschw. 
Heterodea Mulleri, .\y/. 
Usnea ceratina, Ach. 
Usnea sublurida, Stn. ; Scot. Nat. 188L. 
Usnea longissima, Ach. 
Ramalina inflata, Hook. 
Ramalina fraxinea, #r.?; barren. 
Ramalina Ecklonii, var. ovalis, Zay/l. 
Stictina quercizans, Ach. 
Sticta pulmonacea, Ach. 
Ricasolia erosa, Eschw. = R. stenospora, Vy!. 
Ravenelii = R. Ravenelii, Tuck. 
Parmelia caperatula, Wy/. 
Parmelia perforata, Ach. 
Parmelia cetrarioides, Del. 
Parmelia tinctorum, Despr. 
Parmelia tiliacea, Ach, 
Parmelia tiliacea, var. affixa, Strn. 
Tn such a climate as that of Queensland the white colour of plants exposed . 
to sunlight can scarcely remain long as such, but must soon assume a yellowish 
tint. Even in the case of the specimens of the present collection referred to. 
P. tiliacea, the thallus has a deeper coloration than in those from Europe, but 
in them the red reaction by C. on the medulla is abundantly manifest, while not 
a trace of red by the same reagent is seen in P. hypoxantha, Strn., described 
below. The spores also of the two specimens of P. filiacea are much more 
nearly spherical than in European samples. As one of the Queensland speci- 
mens has the thallus closely appressed to the bark, I have named it var. affiza. 
Having stated so much, the matter must lie in abeyance meanwhile, until a 
more extended series of specimens shall have been obtained. 
Parmelia laceratula, Vy/. 
There are several examples of this lichen in the collection, in all of which 
the thallus is ‘‘pallide ochraceus vel lutescenti-pallidus,” and not “albidus vel 
albo-glaucescens,” as stated by Nylander in his Syn. Meth. Lich. p. 390. 
All this bears out what is stated in the preceding paragraph. No. 332 con- 
tains specimens with shorter at times nearly spherical spores thus, ‘008 — 
“O11 x ‘007 — ‘009 mm., but in the absence of spermatia I cannot reconcile 
myself to the separation of this from P. laceratula, 
