72 Transactions. — Bolany. 



Sticta expansa, Strn. 



Thallus amplus, interdum fere pedalis, cervmus vel cinereo- 

 fuscescens, late laciniato - lobatus lobis saepe imbricatis, 

 scrobiculato - fossulatus vel reticulatim costatus, subtus 

 ochraceus, centrum versus obscurior et ibi obscure vel 

 nigricanti-tomentosus, pseudocyphellis parvis, citrinis creber- 

 riter adspersus, intus albus ; apothecia sparsa nigra mediocria, 

 margine integro vel fere integro cineta ; spors Snse, fuscoe, 

 2-loculares, saepe breviter polari - biloculares, 0-02-0-027 X 

 0-007-00085 ram. Gonidia fere leptogonidia parva, diam. 

 0-005-0-008 mm. (raro 0-009 mm.) contentis non granulatis. 

 Corticola prope Wellington (/. Buchanan). 



This is closely allied to St. glauculurida, Nyl., and may be 

 its completely developed condition. If so, Nylander's lichen 

 may be called a variety of it under the same name. There is 

 no reaction by K on the medulla. 



There is scattered oyer the upper surface of this Sticta a 

 parasitic Vcrrucaria, which may be described. 



Verrucaria simplicior, Strn. 



Perithecium sessile, nigrum, minutum fere sphaericum, 

 prominulum ; sporae Bnae, incolores, simplices, oblongae, 

 2-nucleata3, 0-009-0-011 x 0-003-0-004 mm. ; paraphyses 

 nullae. lodo g.h. non tincta. 



Sticta grandis, Strn. 



Thallus firmus crassiusculus mediocris (latit. 5-9-pollicaris) 

 rufescenti-cerviuus vel rufescens, laeviusculus vel versus mar- 

 ginem leviter corrugatulus, laciniato-lobatus lobis sinuoso- 

 divisis, margine hinc inde, et paululum supra, albo-pilosus, 

 subtus nigricans et versus marginem ochraceus vel ochraceo- 

 pallidus, breviter nigricanti - tomentosus, pseudocyphellis 

 parvis citrinis ornatus ; medulla alba K — ; apothecia sparsa, 

 caesio-pruinosa, detrita nigra (latit. 2-5 mm.) receptaculo 

 thallino extus papilloso-aspero, margine primum infiexo et 

 lacerato dein dentato, demum fere depresso ; sporae Suae, 

 fuscae, fusiformes, 1-septatae, stepius breviter polaribiloculares, 

 0-025-0-034 X 0007-0-01 mm. Gonidia flavescentia, diam. 

 0007-0015 mm. Oxford Bush, New Zealand {T. W. N. 

 Beckett). 



This curious lichen presents characteristics in common 

 with St. puhcsccns, Miill. Arg., St. granulata, Bab., St. 

 glaucolurida , Nyl., and St. obvoluta, Ach. How far we are 

 warranted in retaining these lichens as distinct species is an 

 open question. Meanwhile, in accordance with modern ideas 

 of specific distinction, I have no alternative but to keep them 

 apart. Certainly the present is the most perfectly developed 

 of the group. 



