The Scottish Naturalist. jj 



reaction by J. is brought out much more vividly if there has. 

 been left on the ivory-rod a trace of K previous to the rod 

 being dipped into the solution of Iodine. 



Usnea Pangiana sp. nov. — Subsimilis U. Himalayance (Bab.) sed 

 robustior rigidior. Thallus sordide cinerascens et partim 

 pallide lutescens. Axis mediocris pallidus vel pallide 

 fulvescens proesertim infra ; nbrilke medullares et axis K 

 flaventes dein intense rubentes ; J — . 

 In Himalaya alt. 6-8000 pedum (G. Watt). 



Usnea molliuscula sp. nov. — Similis U. Thorn son i sed pallida vel 

 lutescenti-pallida. Spora? 8nse late ellipsoideae, simplices, 

 •oo9-'oi ixoo7-'oo8 mm. Discus apotheciorum K — C flavens. 

 In Victoria Australia) (M'Cann), haud rara. 



Usnea foveolata sp. nov. — Thallus cinerascens vel sordide cineras- 

 cens rotundatus foveolato-scrobiculosus, rigidus, ramosus et 

 divaricato-fibrillosus (pnesertim infra). Axis tenuis vel medio- 

 cris, pallide rufescens ; febrilhu medullares J — , K flaventes 

 dein rubentes. In Africa australi (D rc J. Shaw). Until I 

 have further evidence I cannot associate this lichen with 

 U. lacimosa (Willd.), more especially in the face of such 

 manifest discrepancies. 



Usnea pectinata sp. nov. — Thallus pallidus, pallide ochroleucus, vel 

 glaucescenti-pallidus, rigidus, erectus (altit. 5-2-pollicum) acute 

 et parce ramosus, densissime et rigide ramulosus vel fere 

 pectinatus. Axis crassus, densus ; fibrillse medullares, K — 

 C — ; J — . Thallus (extus) K — C bene flavens. In Africa 

 australi prope Somerset East, a Prof. P. MacOwan lecta, et 

 in Australia passim. 



Usnea xanthophana sp. nov. — Similis U. floridee et similiter 



ramosa, &c., sed differt colore ochroleuco-pallido et thallo 



laevigata (K — C flav.) In Monte Tararua, N. Z., sat 



frequenter (Buchanan). 



I have been tempted to separate the N. Z. plant from that 



of the northern hemisphere, owing to the striking contrasts in 



colour and appearance. 



Usnea flexilis (Strn.) — var. i7itestiniformis (Strn.) — Differt colore 

 fusco-rubescente, truncis et ramis primariis magis inflato- 

 articulatis, etiamque extremitatibus magis nbrilloso-ramulosis. 

 Axis tenuissimus pallidus : fibrillar medullares K flaventes 

 dein rufo-ferrugineae, J vinoso-violacere. 

 Ex lib. Ind. Or. Hook. fil. et Thomson (No. 1720). 

 I think it necessary, before concluding this paper, to give one 



