240 Transactions.— Botany. 
Zealand crustaceous lichens. The internal organization resembles exactly that 
so characteristic of this lichen. 
On banks, Tinakori Hills, Wellington. 
Lecidea fuscolutea, Dicks. 
The chemical reactions are identical, viz, K, thallus yellow ; apothecia 
crimson, The hypothecium is darker than in specimens from Ben Lawers, 
Scotland. 
On bark of trees, Tinakori Hills, Wellington. 
Lecidea otagensis ? Nyl. 
Thallus greyish white, smooth, thin, and nearly continuous ; apothecia 
black, sessile, slightly concave, margined, afterwards slightly convex and 
immarginate, and somewhat rugose ; spores eight, irregularly fusiform, thicker 
at one end, and shaped like an Italian Z; septa varying from two to six ; 
hypothecium pale; paraphyses not distinct, their apices black and closely 
matted together, as in many others of the New Zealand lichens. 
The shape of the spores, as indicated above, is constant throughout several 
specimens examined, and it is noticeable that the curve at the thicker end is 
invariably that of a shorter radius vector. : 
Until I saw Dr. Lauder Lindsay's paper, in the * Edinburgh Philosophical 
Transactions" on lichens and fungi of New Zealand, I felt satisfied in 
identifying this lichen with Z. otagensis from Dr. Nylander's description ; 
but the shape of the spores, as figured by Dr. Lindsay, is quite at variance 
with what I have seen and described. The whole of a thin section has a dingy ` 
aspect, and the hypothecium is not dingier than the rest, perhaps more 
pellucid. 
On bark of trees everywhere round Wellington, 
Lecidea rivulosa, Ach. 
So far as I know, this is the first notice of this common lichen having been 
found in New Zealand. It differs in no essential from specimens found in 
Britain. 
Astrothelium prostratum, Stirton. 
Thallus well developed, continuous or rimulose, thin, yellowish white, 
merging into grey or cinereous ; apothecia compound ; receptacle black, large, 
broad (02 to -07 in), shallow, scarcely raised above the general surface ; 
perithecia entire, irregular in outline, and all apparently opening into one ` 
ostiole, which shows on the surface ; Spores eight, uniserial, colourless at first — 
when the contents are coarsely granular—becoming brown when mature, with 
Six crossbars, which assume the appearance of oval, coloured cells ; paraphyses 
plentiful, filiform, simple. 
On bark of trees, Wainuiomata, Wellington. 
