Usnea rubescens, Strn. Scot. Nat., 1883. Similis U. floridœ et similiter ramosa sed elongata et pendula vel prostrata (longit, interdum pedalis). Thallus cinerascenti-pallidus, sæpius minute papilloso-sorediatus, passim rufo-ferrugineus. Axis mediocris vel crassus, intus K passim rubro-maculatus; fibrillæ medullares albidæ, compactæ I –, K fl. dein rubentes. Ad rupes in New South Wales Australiæ (Kirton); in Insula Regis (Müller); Wellington (J. Buchanan); Victoria (Bulli). This lichen tends to merge throughout into a rufo-ferrugineous colour, especially after being retained for a time in the herbarium. Usnea rubescens, * subrubescens, Strn. Similis U. rubescenti sed trunci et rami non vel vix fibrilloso-ciliati; axis pallidus, crassiusculus; fibrillæ medullares compactæ, albidæ, K – sed eæ axin versus K flaventes. N.Z. (J. Buchanan). Usnea elegans, Strn. Trans. Royal Soc. Victoria, 1880. Thallus (K – C – vel pallide flav.) pallide flavescens, teres, firmus, erectus (altit. 1–2-pollicaris), parcissime divisus, interdum simplex et tunc rigidus, undique densissime et breviter fibrillosus; axis gracilis, interdum filiformis; fibrillæ medullares arachnoidæ K – C –; apothecia pallida et cæsio-pruinosa, plerumque terminalia, plana (latit. 4–13 mm.), receptaculo thallino fibrilloso præsertim margine; sporæ 8næ, incolores, ellipsoideæ vel late ellipsoideæ, simplices, 0.008–0.011 mm. × 0.006–0.008 mm. Iodo gel. hym. intense cærulescens. Corticola, Girorie Mts., Darling Downs (F. M. Bailey); Canal Brook Australiæ (Hartman). Usnea consimilis, Strn. Scot. Nat., 1882. Similis præcedenti sed humilior, magis compacta ramis arcuatis et crebrius breviusque fibrilloso-ciliatis; axis centralis nonnihil crassior et fibrillæ medullares K fl. C fl. Sporæ 0.009–0.011 mm. × 0.006–0.007 mm. In Australia (Rev. M. Anderson). Usnea oncodes, Strn. Scot. Nat., 1881. Thallus lutescens aut lutescenti-cervinus vel etiam rufescens, nitidus, rigidus, crassiusculus, erectus, ramosus, ramis et ramulis prominule et creberriter cæsio-sorediosis; axis centralis filiformis; fibrillæ medullares K fl. dein ferrugineorubentes, I violaceæ. New Zealand (J. Buchanan). The thallus has the smooth aspect of U. articulata, and, at times, slightly inflated.