52 



THE LICHEN FLORA OF QUEENSLAND, 



2. C. smaragdina, Pers. 



Thallus shining, glabrous, of a dull silky green, flat, ap- 

 pressed, in few rounded lobes, divided into few similarly- 

 rounded lobules, bearing pallid rhizinse and fine tomentum 

 beneath. In section the thallus shows little trace of the 

 Sn. usual central filamentous layer. Apothecia appressed, 

 rufous or brown, at length dark-red, plano-convex, immar- 

 ginate ; thecje narrow linear-clavate with spores 1-seriate, 

 or ovate with spores 2-seriate ; spores small, ovate-fusiform, 

 apices subacute, *011 x -0035 m.m., almost uniform. From 

 New Zealand specimen sent by Dr. Knight to F. M. B. 



3. C. aurantiaca, Mnt. (Ach.) 



Thallus cinereo-glaucescent, orbicular, monophyllous, cir- 

 cumference radiate-incised, the divisions contiguous or sub- 

 imbricate, smooth or concentrically towards the margins 

 M. rugulose ; beneath pallid and downy, rhizinae similarly 

 pallid. Apothecia bright red or pallescent, flat or convex, 

 medium, immarginate ; spores ellipsoid or fusiform-ellipsoid, 

 •009— -012 x -004— -005 m.m. Nyl. Syn. Lich. p. 43. 

 Vol. II. 



Syn. — C. molybdsea v. aurantiaca. 



4. C. pellita, Ach. 



Thallus ashy-leaden or ashy-white or glaucous, orbicular, 

 sub-monophyllous, freely and deeply cut into radiate incised 

 laciniae ; beneath densely clothed with blue-brown hypo- 

 thalline rhizinae. Apothecia reddish or brownish or brown- 

 M. black, flat or convex, medium, immarginate ; spores ellipsoid 

 or fusiform ellipsoid -009 — -014 x -004— -005 m.m. 

 Syn . — C molybdasa v. pellita Ach. 

 Nyl. Syn. Lich. p. 43, Vol. II. 



IV. — Dichonema, Nees. 



Thallus pallid or in parts virescent, thinly membranaceous, 

 wide-spread, flat, sub-reniform, lax, composed of radiating filamen- 

 tose elements ; these elements are of two kinds, the one fine, hollow, 

 here and there septate, the other 3 — 4 times thicker, scytonemoid, 



