BY JOHN SHIRLEY, B.SC. 



105 



with a few terminal ones again dividing. The dense cortical 

 tissue of the thallus consists of roundish, polyhedral, thick- 

 Sn walled cells. Apothecia concolorous, rather large ; asci 

 small, oboval ; spores minute, shortly ellipsoid, double- 

 walled, colourless. 



IJab. — Common. In all probability the following are 

 merely varieties. 



* Flaccentes — Main stems flaccid. 



'2. U. trichodea, Ach. 



Fronds very slender, filiform, pendulous, pale yellow or 

 straw-coloured, primary branches ring-cracked and some- 

 what moniliform ; secondary stems smooth, glabrous and 

 terete ; terminal shoots fine and setaceous ; no fibrillar 

 M along the main stems. Apothecia ^ — J in., pink and con- 

 cave above, shining, with a more decided border than is 

 usual in Usneas, and a few spreading marginal cilia. 

 Reported in Frag. Phyt. Aus., Vol. XI. 



3. U. intercalaris, Kremp. 



Thallus pendulous, whitish -yellow or ochroleucou«, smooth, 

 ramose-intricate, efibrillosc, with dichotomous branchings, 

 sometimes here and there swollen, and with capillary 

 M attenuate branchlets. Apothecia small or mediocre, on the 

 terminal branchlets or also lateral ; disk plane, ochraceous, 

 naked, with margin sparingly ciliated. Spores 8, subglo- 

 bose, hyaline, -008— "01 x -006— -007 m.m. Medulla K 

 blood-red. 



Journal des Museum Goddefroy Band I. 



4. U. longissima, Ach. 



Thallus drooping, filiform, granular with soredia, 20 in. 

 long or more ; main stems thread-like, with long simple 

 Sn capillary branchlets striking off at right angles to the 

 parent stem, terminating in very fine apices, the whole 

 pale yellow-green. Apothecia large with ciliated margins ; 

 spores small, -00;") x -004, oval or subspherical ; asci 



