BY /OHX SHIRLEY, B.SC. 



15 



Hab. — On rocks, Fassifern. 



Dr. S. in Proc. Roy. Soc. Vic, Sept., 1880 



Strongly resembles P. Mougeotii, Schaer. 



I. P. sinuosa Sm. (Medulla K yellow then red). 



Thallus yellowish, or lemon-yellow, spreading, smooth, 

 deeply and multifid laciniate-lobate, laciniae narrow, sinuate- 

 pinnatifid, ultimate seguients broadly linear and acute, 



Sn. sinuses circular, apices dilated, cloven ; soredia terminal or 

 peripheral, prominent, lemon-yellow. Apothecia dark chest- 

 nut, concave ; margin entire, inflexed, or obsoletely crenate 

 or sorediate. Spores 8, oval-oblong, colourless, simple, 

 variable, seldom larger than .011 x .006 m.m. ; paraphjses 

 delicate, indistinct, aggregated at tips 



£>jn. — P. Despreanxiij Del.. P. relicina var. FY. 



Ifab. — On rocks, Brisbane River, with other Parmelias. 



3. P. caperata. L. (Medulla K — C — ) 



Thallus orbicular, membranaceous, light yellow or light 

 gamboge or greenish white above, finely reticulate, fre- 

 quently granulose-pulverulent, central parts indistinctly 

 divided with lateral margins of lobes overlapping and adher- 

 ing, plain division into lobes and lobules at margins of plant 

 Sn. only ; beneath blackish, rough, nig:*o-rh;zinose, margins 

 glabrous and pallid-brewn. Apothecia with chestnut 

 coloured disk and solid ring-like margins, at length crenu- 

 late, pulverulent. Spores 8, ellipsoid, -017 — -022 x -007 — 

 •009 m.m. Spermatia acicular *005 x -00125 m.m., seated 

 on sterigmata which are unusually distinct, frequently be- 

 coming granular and yellow under iodine, composed of 

 several, delicate, ' t narrow, sublinear cellules, '022.") x *Q02 

 m.m. 



Hab. — Common on trees and palings. 



24. P. caperatula, Nyl. 



Thallus ligLt dirty yellow, lobes ar pressed, imbricated, 

 showing little lobation except at the circumference, and 

 then seldom crenulate, surface frequently sorediate, marked 



