BY JOHN SHIRLEY, B.SC. 



12. R. minuscula y. alba, C. K. 



Thallus pale green to white, glabrous, shining, smooth or 

 nearly so, fistulose, here and there perforated, fronds matted 

 round a central point, with several erect or ascending stems, 

 and others of the circumference crowded and appressed, 

 ■J — J in. long ; cortical layer filamentose. Branches flat- 

 K tened, seldom forking more than once, each fork again 

 shortly bifurcated ; lacinia3 bluntly conical ; branches 

 lacunate, the lacuna? with raised whitened edges. Apothe- 

 cia generally near the first fork of the branches, concolorous 

 with thallus, margin somewhat paler. Spores *01 — *015 x 

 •004— -006 m.m. straight. 



Hab. — On twigs, Rosewood and Mt. Perry. 



13. R. intermedia, Del. 



Thallus pale glaucous or glaucous green, glabrous, smooth, 

 somewhat polished, 2 in. high, rigescent, dividing rapidly 

 and dichotomously into linear lobes and lobules, terminal 

 lacinias furcate or digitate with obtuse apices ; basal portions 

 of thallus sparingly albo-sorediate ; cortical layer filamentose. 

 W Apothecia lateral and sub-terminal, 1 — 3 m.m. wide, 

 inegular, sub-stipitate, margins entire, concolorous with 

 thallus. Spores 8, straight or usually so, oval, oval-oblong, 

 or subfusiform, 1-septate, hyaline, pale golden yellow with 

 iodine, "013 — '015 x '004 — -005 m.m. Paraphyses some- 

 what thick, not as freely separating as in other species. 

 Gel. hym. with iodine dull deep blue. 



Hab. — Brisbane Botanic Gardens on twigs of sickly trees. 



14. R, rutilans, Stirton. 



Evidently a mistaken entry in Synopsis Queen. Fl. p. 745 

 for Stictina rutilans, Stirton. 



Tribe VII. — Usneei, Nyl. 



Thallus white or coloured, branched, usually with a firm 

 filiform axis. Apothecia peltate, with a thalline border 

 which is often ciliate. Spores colourless, small, ellipsoid, 

 Paraphyses indistinct. 



